SNAP Analog Output
Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE
1
DATA SHEET
Form 1066-150130
SNAP Analog Output Modules
Features
Resolution = 0.004% of nominal range
Rugged packaging
Convenient pluggable wiring
Powered by a single 5-volt supply
Factory calibrated; no user adjustment necessary
Out-of-range indication
Operating temperature -20 °C to 70 °C
Accepts up to 22 to 14 AWG wire
Description
SNAP I/O analog output modules are part of Opto 22’s SNAP
PAC System. They mount on SNAP PAC racks along with other
I/O modules and a SNAP PAC brain or R-series controller, either
a standard wired or a Wired+Wireless model.
These software-configurable output modules handle a wide
variety of signal levels. Most provide dual-channel packaging.
All SNAP analog modules are factory calibrated. Part numbers
ending in -FM are Factory Mutual approved.
SNAP analog output modules have an on-board
microprocessor to provide module-level intelligence, which
makes them an ideal choice for Original Equipment
Manufacturers (OEMs). For additional information about the
stand-alone operation of SNAP analog modules, please refer
to the SNAP I/O Module Integration Guide (Opto 22 form #876).
SNAP racks use a retention rail locking system that holds
modules securely to the rack. Normally, a hold-down screw is
not required. However, for applications that require additional
module security, each module can be secured on the rack
with two 4-40 by ½-inch standard machine screws.
Specifications and wiring diagrams are in module descriptions
starting on page 2. Dimensional drawings begin on page 13.
Notes for legacy hardware: Most SNAP analog output
modules can also be used with legacy SNAP Simple, SNAP
Ethernet, and SNAP Ultimate brains and with serial SNAP
brains such as the B3000. These modules can be mounted on
SNAP B-series or M-series racks. Exceptions are noted in
individual module descriptions.
Isolation
All SNAP analog output modules are isolated from all other
modules and from the I/O processor (SNAP PAC brain or on-
the-rack controller). On most dual-channel modules, the two
channels are not isolated from each other. Exceptions: SNAP-
AOA-23-iSRC, SNAP-AOD-29, and SNAP-AOD-29-HFi have two
isolated channels.
Transformer isolation prevents ground loop currents from
flowing between field devices and causing noise that
produces erroneous readings. Ground loop currents are
caused when two grounded field devices share a connection,
and the ground potential at each device is different.
Isolation also provides protection for sensitive control
electronics from industrial field signals.
IMPORTANT: Since most SNAP dual-channel analog output
modules provide two single-ended output channels with a
common reference, these dual channels are transformer and
optically isolated from other modules, but not from each
other. However, SNAP-AOA-23-iSRC, SNAP-AOD-29, and
SNAP-AOD-29-HFi do have channel-to-channel isolation.
Part Numbers
Part Description See
SNAP-AOA-23 Dual-channel analog output,
current loop, 4–20mA pg 4
SNAP-AOA-23-iSRC
SNAP-AOA-23-iSRC-FM*
Isolated dual-channel analog
output, current loop, 4–20
mA, with loop sourcing pg 5
SNAP-AOA-28 Dual-channel analog output,
current loop, 0–20 mA pg 8
SNAP-AOA-3 Single-channel current
output, 4–20mA pg 2
SNAP-AOD-29 Isolated dual-channel analog
time-proportional digital out-
put, 5 to 60 VDC pg 9
SNAP-AOD-29-HFi Isolated dual-channel analog
TPO or PWM digital output,
2.5 to 24 VDC pg 10
SNAP-AOV-25 Dual-channel analog voltage
output, 0 to 10 VDC pg 6
SNAP-AOV-27 Dual-channel analog voltage
output, -10 to +10 VDC pg 7
SNAP-AOV-5 Single-channel analog volt-
age output, 0 to 10 VDC pg 3
SNAP-AOVA-8 8-channel analog multifunc-
tion output, voltage or current pg 11
* Factory Mutual approved
SNAP Analog Output Modules
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules
PAGE
2
DATA SHEET
Form 1066-150130
Description
The SNAP-AOA-3 module provides a single channel of
transformer and optically-isolated digital to analog conversion.
The module has a true differential (floating) output that
eliminates ground loops and has a nominal output range of 4 mA
to 20 mA.
Specifications:
Part Number Description
SNAP-AOA-3 Single-channel analog output 4–20 mA
Input 12-bit serial data
Output 4 to 20 mA (floating)
Span 16 mA
Resolution 3.9 microamps
Response Time
(% of span/delta I/ delta time) 99.9%/15.98 mA/3 mS
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Operating Common
Mode Voltage 250 V
Common Mode Resistance >1000 M W
Accuracy 0.1% of span
Gain Temperature Coefficient 50 PPM/ °C
Offset Temperature Coefficient 20 PPM/ °C
Module Power Requirements 5 Volts DC (±0.15 ) @ 140 mA
Loop Power Requirements 10 Volts DC (min) to
32 Volts DC (max)
Max. Loop Resistance
(Ohms)
@ Loop Supply 250
10V 350
12V 950
24V 1350
32V
Max. Loop Resistance formula
(Loop Voltage - 5)
0.02
Ambient Temperature:
Operating
Storage -20 °C to 70 °C
-40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals UL, CE, RoHS, DFARS
Warranty Lifetime
Single-Channel Current Output
4–20 mA
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules DATA SHEET
Form 1066-150130
PAGE
3
Description
The SNAP-AOV-5 module provides a single channel of
transformer and optically-isolated digital to analog conversion.
The module has a true differential (floating) output that
eliminates ground loops and has a nominal output range of 0
VDC to +10 VDC.
Specifications:
Part Number Description
SNAP-AOV-5 Single-channel analog output voltage
0 to 10 VDC
Input 12-bit serial data
Output 0 to +10 Volts DC (floating)
Span 10 Volt span
Resolution 2.44 mV
Response Time
(% of span/delta V/delta time) 99.9%/19.98 V/3 mS
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Operating Common
Mode Voltage 250 V
Common Mode Resistance >1000 Megohms
Load Current 10 mA (floating)
Short Circuit Current Continuous 125 mA (typical)
Accuracy 0.1% of span
Gain Temperature Coefficient 50 PPM/°C
Offset Temperature Coefficient 20 PPM/°C
Power Requirements 5 Volts DC @ 150 mA
Ambient Temperature:
Operating
Storage -20 °C to 70 °C
-40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals UL, CE, RoHS, DFARS
Warranty Lifetime
Single-Channel Voltage Output
0–10 VDC
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules
PAGE
4
DATA SHEET
Form 1066-150130
Description
The SNAP-AOA-23 module provides a nominal output range of 4
mA to 20 mA. An external loop power source is required for the
current loops.
NOTE: Both channels share common reference terminals.
Common reference terminals are 3, 4, 7, and 8.
Specifications:
Part Number Description
SNAP-AOA-23 Dual-channel analog output current loop
4–20 mA
Input 12-bit serial data
(each channel)
Outputs 4 to 20 mA (each channel)
Span 16 mA
Resolution 3.9 microamps
Response Time
(% of span/delta I/ delta time) 99.9%/15.98 mA/3 mS
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Operating Common
Mode Voltage 250 V
Common Mode Resistance >1000 Megohms
Accuracy 0.1% of Span
Gain Temperature Coefficient 50 PPM/°C
Offset Temperature Coefficient 20 PPM/°C
Module Power Requirements 5 Volts DC (±0.15) @ 150 mA
Loop Power Requirements 8 VDC (min) to
32 Volts DC (max)
Max. Loop
Resistance (Ohms)
@ Loop Supply 250
8V 450
12V 650
15V 1050
24V 1450
32V
Max. Loop Resistance formula
(Loop Voltage - 3)
0.02
Ambient Temperature:
Operating
Storage -20 °C to 70 °C
-40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals UL, CE, FM, RoHS, DFARS
Warranty Lifetime
Dual-Channel Current Output
4–20 mA
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules DATA SHEET
Form 1066-150130
PAGE
5
Specifications:
Part Number Description
SNAP-AOA-23-iSRC
SNAP-AOA-23-iSRC-FM Isolated dual-channel analog
4–20 mA output with loop sourcing
Input 12-bit serial data (each channel)
Outputs 4 to 20 mA (each channel)
Span 16 mA
Resolution 3.9 microamps
Response Time
(% of span/delta I/ delta time) 99.9%/15.98 mA/3 mS
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Operating
Common Mode Voltage 250 V
Common Mode Resistance >1000 Megohms
Accuracy 0.1% of Span
Gain Temperature Coefficient 50 PPM/°C
Offset Temperature Coeffi-
cient 20 PPM/°C
Max. Loop Resistance
@ Loop Supply 950 Ohms
Ambient Temperature:
Operating
Storage -20 °C to 70 °C
-40 °C to 85 °C
Isolation: Optical 4000 V
Isolation: Transformer 1500 V
Isolation: Channel to Channel 250 V continuous
(1500 V transient)
Power Requirements 5 Volts DC (±0.15) @ 200 mA
Power Requirements -
Loop Power (Input)
From separate field connector;
24 VDC nominal (70 mA max)
@ 24 V input, both loops
@ 20 mA), 30 VDC maximum
Loop Power (Output) 24 VDC (±1.5 V) @ 20 mA
Open loop: 30 V maximum
Shorted loop: 24 mA nominal
LED on top of module Indicates that there is power to the
24v source supply 2-pin connector
Agency Approvals CE, RoHS, DFARS
FM (SNAP-AOA-23-iSRC-FM
only)
Torque, ho ld-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Warranty Lifetime
Isolated Dual-Channel Current
Output 4–20 mA
Description
The SNAP-AOA-23-iSRC and SNAP-AOA-23-iSRC-FM
modules provide a nominal output range of 4 mA to 20 mA.
These modules include built-in loop sourcing capability.
The SNAP-AOA-23-iSRC-FM is Factory Mutual approved.
With the connection of a single 24 V power supply, these
modules source two 24 V loops. The loop sources are
internally connected to the individual outputs.
The two channels and their loop sources are isolated from
each other; they do not share any field connection. In
addition, each loop source is current limited so that an
external fault on one loop will not affect the other.
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules
PAGE
6
DATA SHEET
Form 1066-150130
Description
The SNAP-AOV-25 module provides a nominal output range of 0 to
+10 volts. Each channel can supply +5 mA of load current.
NOTE: Both channels share a common reference terminal.
Specifications:
Part Number Description
SNAP-AOV-25 Dual-channel analog output voltage 0 to 10 VDC
Input 12-bit serial data
(each channel)
Outputs 0 to +10 Volts DC
Span 10 Volts
Resolution 2.44 mV
Response Time
(% of span/delta V/delta time) 99.9%/19.98 V/3 mS
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Operating Common Mode
Voltage 250 V
Common Mode Resistance >1,000 Megohms
Load Current (nominal) 5 mA (each channel)
Short Circuit Output Current Continu-
ous 40 mA per channel
Accuracy 0.1% of Span
Gain Temperature Coefficient 50 PPM/°C
Offset Temperature Coefficient 20 PPM/°C
Power Requirements 5 Volts DC (±0.15) @ 150
mA
Ambient Temperature:
Operating
Storage -20 °C to 70 °C
-40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals UL, CE, FM, RoHS, DFARS
Warranty Lifetime
Dual-Channel Voltage Output
0–10 VDC
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules DATA SHEET
Form 1066-150130
PAGE
7
Description
The SNAP-AOV-27 module provides a nominal output range of
-10 to +10 volts. Each channel can supply ±5 mA of load current.
NOTE: Both channels share a common reference terminal.
Specifications:
Part Number Description
SNAP-AOV-27 Dual-channel analog voltage output
-10 VDC to +10 VDC
Input 12-bit serial data
(each channel)
Outputs -10 to +10 Volts DC
Span 20 Volts
Resolution 4.88 mV
Response Time
(% of span/delta V/delta time) 99.9%/19.98 V/3 mS
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Operating Common Mode
Voltage 250 V
Common Mode Resistance >1,000 Megohms
Load Current (nominal) 5 mA (each channel)
Short Circuit Output Current Continu-
ous 40 mA per channel
Accuracy 0.1% of Span
Gain Temperature Coefficient 50 PPM/°C
Offset Temperature Coefficient 20 PPM/°C
Power Requirements 5 Volts DC (±0.15)
@ 150 mA
Ambient Temperature:
Operating
Storage -20 °C to 70 °C
-40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals UL, CE, FM, RoHS,
DFARS
Warranty Lifetime
Dual-Channel Voltage Output
-10 to +10 VDC
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules
PAGE
8
DATA SHEET
Form 1066-150130
Description
The SNAP-AOA-28 module provides a nominal output range of 0
mA to 20 mA. An external loop power source is required for the
current loops.
NOTE: Both channels share a common reference terminal.
Specifications:
Part Number Description
SNAP-AOA-28 Dual-channel analog output current loop
0–20 mA
Input 12-bit serial data (each channel)
Outputs 0 to 20 mA (each channel)
Span 20 mA
Resolution 4.9 microamps
Response Time
(% of span/delta I/ delta time) 99.9%/15.98 mA/3 mS
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Operating Common
Mode Voltage 250 V
Common Mode Resistance >1000 Megohms
Accuracy 0.1% of Span
Gain Temperature Coefficient 50 PPM/°C
Offset Temperature Coefficient 20 PPM/°C
Module Power Requirements 5 Volts DC (±0.15 ) @ 150 mA
Loop Power Requirements 8 Volts DC (min) to
32 Volts DC (max)
Max. Loop
Resistance (Ohms)
@ Loop Supply 250
8V 450
8V 650
12V 1050
24V 1450
32V
Max. Loop Resistance formula
(Loop Voltage - 5)
0.02
Ambient Tempe rature:
Operating
Storage -20 °C to 70 °C
-40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals UL, CE, FM, RoHS, DFARS
Warranty Lifetime
Dual-Channel Current Output
0–20 mA
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules DATA SHEET
Form 1066-150130
PAGE
9
Both TPO channels also have individual “inhibit” inputs dedicated
to turning off the output, a useful feature in temperature and
interlock control applications. The channels are optically isolated
from each other.
NOTE: The SNAP-AOD-29 module cannot be used in a SNAP PAC
IO4AB system. Instead, use the built-in TPO functionality available
on all SNAP-PAC brains that support IO4AB.
Specifications:
Part Number Description
SNAP-AOD-29 Isolated dual-channel analog Time-propor-
tional digital output 5 to 60 VDC
Input 12-bit serial data (each channel)
Switched Output
at 45 °C Ambient
at 70 °C Ambient
5 to 60 Volts DC
0.5 A
0.2 A
TPO Resolution 12-bit
Each bit = Period/4095
1 millisecond/bit default
Period Range
0.251 sec. to 64.25 sec.
(0.251 sec for Ethernet-based
I/O units)
0.251 seconds module default
Period Accuracy ± 0.5%
Period Resolution .251 second
Inhibit Inputs
On
Off
4.0 Volts DC at 1.0 mA
(32 Volts DC max.
1.0 Volt DC
Maximum Operating Common
Mode Voltage 250 V
Common Mode Resistance >1,000 Megohms
Timebase Temperature Coeffi-
cient 50 PPM/°C
Power Requirements 5 Volts DC (±0.15) @ 150 mA
Ambient Te mperature:
Operating
Storage -20 °C to 70 °C
-40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals UL, FM, CE, RoHS, DFARS
Warranty Lifetime
Dual-Channel Time-Proportional Output
Voltage 5–60 VDC
Description
The SNAP-AOD-29 module provides two channels of time-
proportional output (TPO). The outputs are used to switch or
control DC loads such as lamps or indicators, solenoids, relay
coils, and PLC logic. Each TPO channel can switch 0.5 A of
load current ranging from 5 VDC to 60 VDC, over a period
range of .25 seconds to 64.25 seconds.
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules
PAGE
10
DATA SHEET
Form 1066-150130
Specifications
Part Number Description
SNAP-AOD-29-HFi Isolated dual-channel analog time-propor-
tional or pulse-width modulation digital out-
put, 2.5 to 24 VDC
Switched Output 2.5 to 24 VDC at 100 mA supplied
externally
Maximum Survivable
Switch Voltage 60 VDC
Peak Current 1.0 A (t < 10 milliseconds)
Period Range 0.00001 sec to 64.25 sec
Percent Range 0-100%
Period Resolution 20.8 nanoseconds
Percent Resolution 0.024% (12-bit)
Period Accuracy +- 0.005% of period
Pull-up Voltage 4.5 to 5.0 VDC
Pull-up Resistor 200 Ohm
Minimum Output Pulse
Width 1 microsecond
Maximum Operating Com-
mon Mode Voltage 250 V Continuous
Isolation: Channel to
Channel 250V Continuous
1500V Transient
Power Consumption 1.5 W (300 mA @ 5 V)
Ambient Temperature:
Operating
Storage -20 °C to 70 °C
-40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals CE, RoHS, DFARS
Warranty Lifetime
Dual-Channel Time-Proportional Output
Voltage 2.5–24 VDC, 0 to 100 kHz
Description
The SNAP-AOD-29-HFi is a TPO (time-proptional output) or
PWM (pulse-width modulation) module that converts an
analog value to a digital on/off output. The outputs are used
to switch or control DC loads such as lamps or indicators,
solenoids, relay coils, and PLC logic. Each channel can
switch 100 mA of load current ranging from 2.5 VDC to
24 VDC supplied externally, over a period range of 0.00001
seconds to 64.25 seconds.
The two channels are optically isolated from each other.
Five volts through a 200 Ohm pull-up resistor are provided
internally for each channel for use with TTL loads. This
feature means you don’t have to provide the pull-up voltage
supply required for each output.
This module requires a SNAP PAC controller or brain with
SNAP PAC firmware version 9.3c or higher. It cannot be used
with legacy controllers or brains.
NOTE: The SNAP-AOD-29-HFi module cannot be used in a
SNAP PAC IO4AB system. Instead, use the built-in TPO
functionality available on all SNAP-PAC brains that support
IO4AB.
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules DATA SHEET
Form 1066-150130
PAGE
11
8-Channel Multifunction Voltage/
Current Output
The SNAP-AOVA-8 is an analog output module with 8
channels, individually configurable for any one of six voltage
or current output ranges:
Each range has 4096 counts (12 bits ) of resolution.
The SNAP-AOVA-8 requires a 24 VDC excitation voltage
brought in through the field connector on the top of the
module. This voltage is internally isolated with transformer
and digital data isolators, and then used to source all channels.
Because all current is sourced from within the module using
the 24 VDC excitation, current outputs are self-sourcing and
cannot be used with an external loop supply or in loops that
are loop-powered or have a self-sourcing device in the loop.
Each channel is individually current or voltage limited and not
affected by opens or shorts on adjacent channels. Connect
both wires from the module, so that a change in output on
one channel will not affect another channel.
Specifications
All negative output terminals on the module are tied together
internally. To prevent ground loops, use loads with isolated
signal inputs or use devices with the same power source, so
they have a common ground.
To wire the module, a 6-foot-long SNAP-HD-20F6 cable is
required. The cable has a 20-pin connector at the module end
and flying leads for wiring to field devices. See wiring
information on page 12.
You can also use a SNAP-TEX-32 breakout board for wiring
convenience. See form 1756, the SNAP TEX Cables & Breakout
Boards Data Sheet, for more information.
The SNAP-AOVA-8 requires a SNAP PAC brain or rack-mounted
controller with firmware version R9.4b or higher. It cannot be
used with legacy controllers or brains.
Specifications (continued)
Voltage Self-sourcing Current
0 to 5 VDC
0 to 10 VDC
-5 to +5 VDC
-10 to +10 VDC
4 to 20 mA
0 to 20 mA
Excitation Range 18 TO 32 VDC
Excitation Current Required 200mA @ 32VDC, 250mA @
24VDC, 350mA @ 18VDC
24V Excitation Fault Recovery
Time 15 mS nominal
Power Requirement (from the
rack) 5 VDC (±0.15) @ 150 mA
Maximum Operating Common
Mode Voltage 250 volts
Isolation 1500 V (transient)
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Data Refresh Time 9 mS nom (update 1 ch/ms)
Ambient Temperature:
Operating
Storage -20 to 70° C
-40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals CE, RoHS, DFARS
Warranty Lifetime
Vo ltage Outputs
Output Range (Resolution)
0 to 5 VDC (1.22 mV)
0 to 10 VDC (2.44 mV)
-5 to +5 VDC (2.44 mV)
-10 to +10 VDC (4.88 mV)
Load Current +/-10 mA min. each voltage
output channel)
Short Circuit Current 16 mA Typ.
Accuracy 0.1% of span
Drift:
Gain Temperature Coefficient
Offset Temperature Coefficient 30 PPM / ° C
15 PPM / ° C
Current Outputs
Output Range (Resolution) 4 to 20 mA (4 microamps)
0 to 20 mA (5 microamps)
Maximum Loop Resistance 750 Ohms (each current out-
put channel )
Open Circuit Volts 27 VDC max.
(24 VDC typical)
Accuracy 0.1% of span
Drift:
Gain Temperature Coefficient
Offset Temperature Coefficient 30 PPM / ° C
15 PPM / ° C
Part Number Description
SNAP-AOVA-8 8-channel analog multifunction output,
voltage or current
SNAP-HD-20F6 6 ft. (1.8 m) wiring cable for SNAP-AOVA-
8 module, with flying leads (required)
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules
PAGE
12
DATA SHEET
Form 1066-150130
8-Channel Multifunction Voltage/Current Output (continued)
Wiring
Wire colors - Excitation
Wire colors - Output points
NOTE: Yellow with purple and
purple with yellow wires are not used.
24 VDC Color
–Black
+ White with Black
Ch –/+ Color
0–Blue
+ White with Blue
1–Pink
+ White with Pink
2–Gray
+ W hite with Gray
3 Green
+ White with Green
4 Orange
+White with
Orange
5–Red
+ White with Red
6 Purple
+ W hite with Purple
7–Yellow
+ White with Yellow
SNAP-AOVA-8 Module (from top)
For more information on the SNAP-HD-20F6
cable, see form 1756, the SNAP TEX Cables &
Breakout Boards Data Sheet.
LED - indicates excitation
24 VDC excitation
Not used
Ch 0
Ch 1
Ch 2
Ch 3
Ch 4
Ch 5
Ch 6
Ch 7
+
+
All negative output terminals are tied
together internally.
All current from any output is sourced
from the module. No external
excitation supplies allowed.
SNAP-HD-20F6 Cable
Outputs
24 VDC Power Supply
This supply is isolated
from the module outputs.
Current input
+
Voltage input
+
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules DATA SHEET
Form 1066-150130
PAGE
13
Dimensional Drawings
All Modules except SNAP-AOA-23-iSRC, SNAP-AOA-23-iSRC-FM, and SNAP-AOVA-8
Note: The SNAP-AOD-29 time-proportional output (TPO) module has integral LEDs for monitoring and
troubleshooting the module’s outputs and inhibit inputs.
-
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules
PAGE
14
DATA SHEET
Form 1066-150130
Dimensional Drawings
SNAP-AOA-23-iSRC and SNAP-AOA-23-iSRC-FM only
-
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules DATA SHEET
Form 1066-150130
PAGE
15
Dimensional Drawings
SNAP-AOVA-8 only
TOP VIEW OF MODULE
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules
PAGE
16
DATA SHEET
Form 1066-150130
Dimensional Drawings
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
All Modules
SNAP Analog Output Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2006–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Output Modules DATA SHEET
Form 1066-150130
PAGE
17
Dimensional Drawing
All Modules
SNAP Analog Module Mounted on a SNAP Rack
More About Opto 22
www.opto22.com • Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • Form 1335-131203
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2014 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Products
Opto 22 develops and manufactures reliable, flexible, easy-to-use
hardware and software products for industrial automation,
energy management, remote monitoring, and data acquisition
applications.
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puts mobile-ready gadgets at your fingertips. Tag them from your
existing tag database, and they automatically scale for use on any
device with a modern web browser. See
groov.com
for more
information and your free trial.
SNAP PAC System
Designed to simplify the typically complex
process of selecting and applying an
automation system, the SNAP PAC
System consists of four integrated
components:
SNAP PAC controllers
PAC Project Software Suite
SNAP PAC brains
SNAP I/O
SNAP PAC Controllers
Programmable automation controllers
(PACs) are multifunctional, modular controllers based on open
standards.
Opto 22 has been manufacturing PACs for over two decades. The
standalone SNAP PAC S-series, the rack-mounted SNAP PAC R-
series, and the software-based SoftPAC™ all handle a wide range
of digital, analog, and serial functions for data collection, remote
monitoring, process control, and discrete and hybrid
manufacturing.
SNAP PACs are based on open Ethernet and Internet Protocol (IP)
standards, so you can build or extend a system easily, without the
expense and limitations of proprietary networks and protocols.
Wired+Wireless™ models are also available.
PAC Project Software Suite
Opto 22’s PAC Project Software Suite provides full-featured, cost-
effective control programming, HMI (human machine interface)
development and runtime, OPC server, and database connectivity
software for your SNAP PAC System.
Control programming includes both easy-to-learn flowcharts and
optional scripting. Commands are in plain English; variables and I/
O point names are fully descriptive.
PAC Project Basic offers control and HMI tools and is free for
download on our website,
www.opto22.com
. PAC Project
Professional, available for separate purchase, adds one SoftPAC,
OptoOPCServer, OptoDataLink, options for controller redundancy
or segmented networking, and support for legacy Opto 22 serial
mistic
I/O units.
SNAP PAC Brains
While SNAP PAC controllers provide central control and data
distribution, SNAP PAC brains provide distributed intelligence for
I/O processing and communications. Brains offer analog, digital,
and serial functions, including thermocouple linearization; PID
loop control; and optional high-speed digital counting (up to 20
kHz), quadrature counting, TPO, and pulse generation and
measurement.
SNAP I/O
I/O provides the local connection to sensors and equipment.
Opto 22 SNAP I/O offers 1 to 32 points of reliable I/O per module,
depending on the type of module and your
needs. Analog, digital, and serial modules are
all mixed on the same mounting rack and
controlled by the same processor (SNAP PAC
brain or rack-mounted controller).
Quality
Founded in 1974, Opto 22 has established a
worldwide reputation for high-quality products.
All are made in the U.S.A. at our manufacturing
facility in Temecula, California. Because we
test each product twice before it leaves our
factory, rather than only testing a sample
of each batch, we can guarantee most
solid-state relays and optically isolated I/O
modules for life.
Free Product Support
Opto 22’s California-based Product Support Group offers free,
comprehensive technical support for Opto 22 products. Our staff
of support engineers represents decades of training and
experience. Support is available in English and Spanish by phone
or email, Monday–Friday, 7 a.m. to 5 p.m. PST.
Additional support is always available on our website: how-to
videos, OptoKnowledgeBase, self-training guide, troubleshooting
and users guides, and OptoForums.
In addition, hands-on training is available for free at our Temecula,
California headquarters, and you can
register online
.
Purchasing Opto 22 Products
Opto 22 products are sold directly and through a worldwide
network of distributors, partners, and system integrators. For
more information, contact Opto 22 headquarters at 800-321-
6786 or 951-695-3000, or visit our website at
www.opto22.com
.
www.opto22.com