G4 Analog ICTD Input
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
© 1991–2013 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.
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DATA SHEET
Form 0429-130501
G4 Analog ICTD Input
Features
Small size, rugged packaging
Optical & transformer isolation, 4000 Vrms transient
Runs on a single 24 VDC supply
Factory-calibrated, no user adjustment necessary
12-bit Resolution
Operating temperature 0° to 70° C
Description
The G4AD4 module works in conjunction with a standard
ICTD temperature probe and provides a single channel of
optically-isolated temperature-to-digital conversion.
Modules plug into an Opto 22 modular controller or an analog
I/O brick and are secured by a captive screw. Field connections
are made to the terminal strip located on the brick base or
controller I/O board.
The G4AD4 module includes complete electrical channel-to-
channel isolation, which eliminates troublesome ground loop
problems. The ICTD can be used in energy management,
freezer control, and similar applications.
The G4AD4 module is compatible with industry-standard
ICTDs as well as Opto 22’s ICTD temperature probes. See form
2072, the ICTD Temperature Probes Data Sheet.
NOTE: Any system using analog sensors and input modules should
be calibrated annually for analog signals. To do so, use
OptoControl commands “Calculate and Set Analog Offset” and
“Calculate and Set Analog Gain.”
Specifications
Input Temperature Range
G4AD4
ICTD Probe -188.4 °C to 150 °C
- 40 °C to 100 °C
Input response time 5% full scale step change in 7.8 seconds
63% full scale step change in 15 0 seconds
Output accuracy* ±0.8 °C
Resolution 12 bits
Thermal time constant (ICTD) 2.5 minutes typical (still air)
Cable length > 2,000 feet (610 meters)
Isolation(Transient)
Input-to-output
Input-to-analog supply 4,000 Vrms
4,000 Vrms
Module Ambient Temperature
Operating
Storage -30 °C to 70 °C
-40 °C to 85 °C
*Accuracy figure requires use of gain and offset commands.
Part Numbers
Part Description
G4AD4 ICTD Temperature Input
G4AD4
G4 Analog ICTD Input
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
© 1991–2013 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.
G4 Analog ICTD Input
PAGE
2
DATA SHEET
Form 0429-130501
Connections
More About Opto 22
www.opto22.com • Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • Form 1335-121210
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
© 2013 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.
OptoEMU Energy Management System
The easy-to-use OptoEMU Sensor monitors electrical energy
use in your facility and delivers detailed, real-time data you
can see, analyze, and use in building and control systems. The
Sensor can monitor energy data from pulsing meters,
electrical panels or subpanels, and equipment. View energy
data online using a software service or incorporate the data
into your control system for complete energy management.
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 user’s 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
