71
SЕRIES
Monitoring relays 10 A
Industrial
refrigerators
Elevators and
lifts
Textile
machines
Labelling
machines
Carousel
warehouses
Industrial
motors
FINDER reserves the right to alter characteristics at any time without notice. FINDER assumes no liability for damage to persons or property, caused as a result of the incorrect use or application of its products.
E
Universal voltage or current detecting and
monitoring relay
71.41.8.230.1021 - Voltage monitoring
71.51.8.230.1021 - Current monitoring
Zero voltage memory according to
EN60204-7-5
Programmable for DC or AC detection level:
- range detecting: upper and lower value
- upper set point minus hysteresis range
(5…50)% for switch on
- lower set point plus hysteresis range (5…50)%
for switch on
Fault memory
Electrical isolation between measuring and
supply circuits
Immune to supply interruptions of <200ms
Wide detecting range:
- voltage: DC (15…700)V, AC (15…480)V
35mm rail (EN60715) mounting
Screw Terminal
For outline drawing see page 7
71.41.8.230.1021 71.51.8.230.1021
Programmable universal voltage monitoring
relay
Programmable universal current monitoring relay
Usable with current transformer 50/5, 100/5,
150/5, 250/5, 300/5, 400/5 or 600/5
AC/DC voltage detection - adjustable
AC (50/60Hz) (15…480)V
DC (15…700)V
Switch-on hysteresis (5…50)%
Switch-off delay (0.1…12)s
AC/DC current detection - adjustable
AC(50/60Hz) (0.1…10)A with current
transformer to 600A
DC (0.1…10)A
Switch-on hysteresis (5…50)%
Switch-off delay (0.1…12)s
Start delay (0.1…20)s
programmable programmable
Contact specification
Contact configuration 1 CO (SPDT) 1 CO (SPDT)
Rated current/Maximum peak current A 10/15 10/15
Rated voltage/
Maximum switching voltage
VAC 250/400 250/400
Rated load AC1 VA 2500 2500
Rated load AC15 (230VAC) VA 500 500
Single phase motor rating (230VAC) kW 0.5 0.5
Breaking capacity DC1: 30/110/220V A 10/0.3/0.12 10/0.3/0.12
Minimum switching load mW (V/mA) 300 (5/5) 300 (5/5)
Standard contact material AgSnO2AgSnO2
Supply specification
Nominal voltage (UN) VAC (50/60Hz) 230 230
VDC
Rated power AC/DC VA (50Hz)/W 4/— 4/—
Operating range AC (0.85…1.15)UN(0.85…1.15)UN
DC
Technical data
Electrical life at rated load AC1 cycles 100·103100·103
Detection levels AC(50/60Hz)/DC (15…480)V/(15…700)V (0.1…10)A at transducer to 600A/(0.1…10)A
Switch-off/reaction/Start delay (0.1…12)s/<0.35s/<0.5s (0.1…12)s/<0.35s/(0.1…20)s
Switch-on level of the detecting level % 5…50 5…50
Fault memory - programmable Yes Yes
Electrical isolation: Supply to Measuring circuits Yes Yes
Ambient temperature range °C –20…+55 –20…+55
Protection category IP 20 IP 20
Approvals (according to type)
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71
SERIES
71 SERIES
Monitoring relays 10A
E
Thermistor temperature sensing relays for
industrial applications
71.91 - 1 Pole, without fault memory
71.92 - 2 Pole, with fault memory
Overload protection according EN60204-7-3
Positive safety logic - make contact opens if the
measured value is outside of the acceptable range
Industry standard module
LED status indication
35mm rail (EN60715) mounting
Screw Terminal
For outline drawing see page 7
71.91.x.xxx.0300 71.92.x.xxx.0001
Thermistor relay
1 Pole normally open contact
24VAC/DC, or 230VAC supply
Thermistor relay with fault memory
2 Pole changeover contacts
24VAC/DC, or 230VAC supply
Temperature detection with PTC
PTC short circuit detection
PTC wire breakage detection
Temperature detection with PTC
Fault memory - switch selectable
Reset by Reset button or supply interruption
PTC short circuit detection
PTC wire breakage detection
Contact specification
Contact configuration 1 NO (SPST-NO) 2 CO (DPDT)
Rated current/Maximum peak current A 10/15 10/15
Rated voltage/
Maximum switching voltage
VAC 250/400 250/400
Rated load AC1 VA 2500 2500
Rated load AC15 (230VAC) VA 500 500
Single phase motor rating (230VAC) kW 0.5 0.5
Breaking capacity DC1: 30/110/220V A 10/0.3/0.12 10/0.3/0.12
Minimum switching load mW (V/mA) 300 (5/5) 300 (5/5)
Standard contact material AgSnO2AgSnO2
Supply specification
Nominal voltage (UN) VAC (50/60Hz) 230 230
VAC/DC 24 24
Rated power AC/DC VA (50Hz)/W 1/0.5 1/0.5
Operating range AC (0.85…1.15)UN(0.85…1.15)UN
DC
Technical data
Electrical life at rated load AC1 cycles 100·103100·103
PTC detecting: Short circuit/Temperature OK <20Ω/>20Ω…<3kΩ<20Ω/>20Ω…<3kΩ
Reset/PTC break <1.3kΩ/>3kΩ<1.3kΩ/>3kΩ
Delay time/activaction time —/<0.5s —/<0.5s
Fault memory - switch selectable Yes
Electrical isolation: Supply to Measuring circuits Yes Yes
Ambient temperature range °C –20…+55 –20…+55
Protection category IP 20 IP 20
Approvals (according to type)
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71 SERIES
Monitoring relays 10A
71
SERIES
E
Ordering information
Example: Universal voltage monitoring relay with LCD display for AC/DC voltage detection, 1 CO (SPDT) contact rated 10A 250V, supply voltage 230V,
programmable delay time and fault memory.
7 1 . 4 1 . 8 . 2 3 0 . 1 0 2 1
Series
Type
4 = AC/DC universal- Voltage detection
5 = AC/DC universal- Current detection
9 = Thermistor relay (temperature
monitoring with PTC thermistor)
No. of poles
1 = 1 CO (SPDT) types 71.41, 51
1 = 1 NO (SPST-NO) type 71.91
2 = 2 CO (DPDT) type 71.92
Supply version
0 = AC(50/60Hz)/DC
8 = AC (50/60Hz)
Supply voltage
024 = 24VAC/DC
230 = 230V
400 = 400V
Additional functions
0 = Basic function
1 = Adjustable detection value
Special versions
0 = No fault memory
1 = Fault memory
Options
0 = No delay time
2 = Adjustable delay times
Contact circuit
0 = CO (nPDT)
3 = NO (nPST-NO)
Selection guide
Type
71.41.8.230.1021 71.51.8.230.1021 71.91.0.024.0300 71.91.8.230.0300 71.92.0.024.0001 71.92.8.230.0001
Supply system type Single phase Single phase Single phase Single phase Single phase Single phase
Functions
Undervoltage/Overvoltage AC or DC
Window mode
(Undervoltage and Overvoltage) AC or DC
Phase loss
Phase rotation
Asimmetry
Neutral loss
Overcurrent/Undercurrent AC or DC
Window mode
(Undercurrent and Overcurrent) AC or DC
Thermistor relay (PTC)
Delay Times
Fixed
Adjustable
Supply voltage
24VAC/DC
230VAC
400VAC
Module width
35mm wide
22.5mm wide
17.5mm wide
Other data
Fault memory
Contact configuration 1 CO 1 CO 1 NO 1 NO 2 CO 2 CO
See selection guide for 70 series functions
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71
SERIES
71 SERIES
Monitoring relays 10A
E
Technical data
Insulation
Insulation according to EN61810-1 insulation rated voltage V 250
rated impulse withstand voltage kV 4
pollution degree 3
over-voltage category III
Dielectric strength (A1, A2, B1, B2), and contact terminals
(11, 12, 14) and terminals (Z1, Z2)
VAC 2500
kV (1.2/50µs) 6
Dielectric strength at open contact VAC 1000
EMC specifications
Type of test Reference Standard
Electrostatic discharge contact discharge EN610004-2 8kV
air discharge EN610004-2 8kV
Radio-frequency electromagnetic field (80…1000)MHz EN610004-3 3V/m
Fast transients (burst) (5-50ns, 5kHz) on (A1, A2, B1, B2) and (Z1, Z2) EN610004-4 2kV
Surges (1.2/50μs) on (A1, A2, B1, B2) and (Z1, Z2) common mode EN610004-5 4kV
differential mode EN610004-5 4kV
Radio-frequency common mode (0.15÷80MHz) to A1 - A2 EN610004-6 10V
Radiated and conducted emission EN55022 class B
Other data
Voltage and current values at terminals Z1 Z2 Type 71.91, 71.92 PTC temperature measurement V / mA 24V/2.4
Maximum length of wiring to the Supply terminals/
Measuring terminals
Type 71.41 Voltage measurement m 150/50
Type 71.51 Current measurement m 150/50
(Wiring capacitance no greater than 10nF/100m) Type 71.91, 71.92 PTC temperature measurement m 50/50
Measuring principle Type 71.41, 71.51, 71.91, 71.92 The measured value is the arithmetical average of 500
individual measurements taken over a 100ms period.
Interruptions less than <200 ms are ignored.
Safety logic Type 71.41, 71.51, 71.91, 71.92 Positive safety logic - When the value being monitored lies
within the acceptable area, the make contact is closed.
Reaction time
(following the application of the supply voltage) Type 71.41, 71.51, 71.91, 71.92 ≤0.5s
Power lost to the environment without contact load W 4
with rated current W 5
Permitted storage temperature range °C –40…+85
Protection category IP 20
Screw torque Nm 0.8
Max. wire size solid cable standed cable
mm20.5…(2x2.5) (2x1.5)
AWG 20…(2x14) (2x16)
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71 SERIES
Monitoring relays 10A
71
SERIES
E
Outline drawings
Types 71.41/51 Type 71.91
Screw Terminal Screw Terminal
Type 71.92
Screw Terminal
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71
SERIES
71 SERIES
Monitoring relays 10A
E
Explanation of relay marking and LED/LCD display
Monitoring relay without LCD-display
ON LED green steady light: supply voltage is on and measuring system is active.
DEF Default: the detected value is outside of the acceptable range.
LED red flashing: delay time is running, see the function diagram.
LED red steady light: output relay is off, contact 11-14 (6-2) is open.
MEMORY ON Fault memory switched on: the state of the output relay after the accurrence of a fault –contact 11-14 (6-2) open– will be
maintained, monitored value returns to within acceptable limits. Fault reset is made by power down or by operating of the
“RESET (71.92.x.xxx.0001).
MEMORY OFF Fault memory turned off: the sate of the output contatcts will only remain in the “fault” condition –contact 11-41 (6-2) open–
while the monitored value is outside of the acceptable limits. When the monitored value returns within the acceptable limits the
contact will revert to the energised state. Monitored equipment will start again automatically.
Monitoring relay with LCD-display
SET/RESET Relay 71.41 and 71.51. Sets and resets the programmable values - see operating in the packing.
SELECT Relay 71.41 and 71.51. Selects the desired parameter for programming - see operating instructions.
DEF Default, LED red steady or flashing.
PROG Modus Enter the programming mode by simultaneously pressing the buttons “SET/RESET” and “SELECT” for 3 seconds.
The word “prog is shown for 1 second. “SELECT allows the choise of AC or “DC”, and is confirmed with “SET/RESET.
Successively pressing the button “SELECT brings up the choises of Up, or UpLo.
The appropriate choise is made by pressing the “SET/RESET button.
The next step will program the appropriate values and the selection of the fault memory function (which is selected with a “YES”
or “NO”). If all programming steps are completed the display will read end”.
Short programmin
instruction
After repeatedly pressing the “SET/RESET” button the measured value will be displayed, or “0” appears if nothing is connected
to Z1 and Z2 (5 and 9). If the programming is brocken off before end” is shown in the display the previous program will remain
unchanged after an interruption of the supply voltage.
Program query Pushing the “SELECT” button for at least 1 second, enters the “program inquiry mode”. The programmed mode and the values are
shown on the repeated pressing of the “SELECT button.
Flashing M (memory)
Fault memory has had effect (fault acknowledgement and reset is made by a 1 second press of the “SET/RESET” button).
LCD-display V = volt
A = amp
Up =
upper limit (with hysteresis in down direction)
Lo = lower limit (with hysteresis in up direction)
UpLo = upper and lower limit - range detecting
Level = value
Hys = hysteresis
M = memory (fault)
Yes = yes - with memory
no =
no - without memory
t1 = T1 - time during which short-time
fulctuations are not taken into account
t2 = T2 - (monitoring relay 71.51) the time during
which inrush currents are not
taken into a
account
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71 SERIES
Monitoring relays 10A
71
SERIES
E
LED/LCD status announcement/advice
Type Starting mode Normal operation Abnormal mode Reset
71.41.8.230.1021
Memory OFF
Measured value displayed Measured value displayed Measured value displayed
Normal operation
Set point is OK
11-14 is closed
Time T runs,
Set point is not OK
11-14 is closed
After expiry of T
Set point is not OK
11-14 is open
Will close, if set point is OK
71.41.8.230.1021
Memory ON
Measured value displayed Measured value displayed M in the display flashes
Measured value displayed
M in the display - static
Measured value displayed
Normal operation
Set point is OK
11-14 is closed
Time T runs,
Set point is not OK
11-14 is closed
After expiry of T
Set point is not OK
11-14 is open
After expiry of T
Set point is not OK
11-14 is open
Will not close at RESET Will close at RESET
71.51.8.230.1021
Memory OFF
Measured value displayed Measured value displayed Measured value displayed Measured value displayed
Time T2 runs,
Set point immaterial
11-14 is closed
Normal operation
Set point is OK
11-14 is closed
Time T runs,
Set point is not OK
11-14 is closed
After expiry of T
Set point is not OK
11-14 is open
Will close, if set point is OK
71.51.8.230.1021
Memory ON
Measured value displayed Measured value displayed Measured value displayed M in the display flashes
Measured value displayed
M in the display - static
Measured value displayed
Time T2 runs,
Set point immaterial
11-14 is closed
Normal operation
Set point is OK
11-14 is closed
Time T runs,
Set point is not OK
11-14 is closed
After expiry of T
Set point is not OK
11-14 is open
After expiry of T
Set point is not OK
11-14 is open
Will not close at RESET Will close at RESET
71.91.x.xxx.0300 Normal operation
Set point is OK
11-14 is closed
Temperature to high
or PTC line break or
PTC short circuit
11-14 is open
Will close, if set point is OK
71.92.x.xxx.0001
Memory OFF
Normal operation
Set point is OK
11-14 is closed
Temperature to high
or PTC line break or
PTC short circuit
11-14 is open
Will close, if set point is OK
71.92.x.xxx.0001
Memory ON
Normal operation
Set point is OK
11-14 is closed
Temperature to high
or PTC line break or
PTC short circuit
11-14 is open
Temperature is OK
11-14 is open
Will close at RESET
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71
SERIES
71 SERIES
Monitoring relays 10A
E
Functions
Type 71.41.8.230.1021
Programmable
MEMORY ON MEMORY OFF
* RESET MEMORY = Pressing “SET/RESET“ > 1 s
Switch off
ULo – mode
If the monitored value is
less than the lower-limit
and, time T has expired.
UUp – mode
If the monitored value
is higher than the upper
limit, and time T has
expired.
ULo UUp – mode
If the monitored valueof
voltage is outside of the
upper or lower voltage
limits, and time T has
expired.
Voltage dips <T do not
result in output relay
switching off.
Switch on
ULo or UUp – modes
When passing the
hysteresis value.
ULo UUp – mode
When passing the
ULo or UUp value.
RESET MEMORY
Pressing “SET/RESET
>1sec.
C = output contact
Normally open 11-14
(6-2) closed.
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71 SERIES
Monitoring relays 10A
71
SERIES
E
Functions
Type 71.51.8.230.1021
Programmable
MEMORY ON MEMORY OFF
* RESET MEMORY = Pressing “SET/RESET“ > 1 s
Switch off
ILo – mode
If the monitored value is
less than the lower-limit
and, time T1 has expired.
IUp – mode
If the monitored value
is higher than the upper
limit, and time T1 has
expired.
ILo IUp – mode
If the monitored value
of voltage is outside
of the upper or lower
limits, and time T1 has
expired.
Inrush current <T2 is
ignored
Current dips <T1 do not
result in output relay
switching off.
Switch on
ILo or IUp – modes
When passing the
hysteresis value.
ILo IUp – mode
When passing the
ILo or
IUp value.
RESET MEMORY
Pushing “SET/RESET
>1sec.
C = output contact
Normally open 11-14
(6-2) closed.
Type 71.91.x.xxx.0300
* PTC-Break ** PTC-Short circuit
Switch off
Thermistor line break
Over temperature RPTC
>(2.5…3.6)kΩ
Thermistor line short
circuit (RPTC≈<20Ω)
Loss of supply
Switch on
Temperature within
limits
RPTC>(1.0…1.5)kΩ on
power-up.
(1…1.5)
kΩ on cooling.
C = output contact
Normally open
11-14 Closed when
temperature within
limits.
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71
SERIES
71 SERIES
Monitoring relays 10A
E
Functions
Type 71.92.x.xxx.0001
MEMORY ON MEMORY OFF
* PTC-Break ** PTC-Short circuit
*** RESET MEMORY = Operate the RESET key, or interrupt the supply.
Switch off
Thermistor line break
Over temperature
RPTC>(2.5…3.6)kΩ,
Thermistor line short
circuit (RPTC<20Ω)
Loss of supply
Switch on
Temperature within
limits
(20Ω…2.5kΩ)
on power-up.
RPTC>
(1…1.5)
kΩ on
cooling.
Select
MEMORY OFF
If monitored value is
expected to cross the
resetting threshold.
Select
MEMORY ON
If monitored value is
expected to remain
within limits.
RESET MEMORY
Operate the RESET key,
or interrupt the supply.
C = output contact
Normally open 11-14
(21-24)
Closed when
temperature within
limits.
Normally closed 11-22
(21-22)
Closed when
temperature outside
limits/Power off.
Please see general technical information
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71 SERIES
Monitoring relays 10A
71
SERIES