Data Sheet

Functions
71 Series - Monitoring relays 10 A
12
Type 71.41.8.230.1021
Switch off
U
Lo
– mode
If the monitored value is
less than the lower-
limit and, time T has
expired.
U
Up
– mode
If the monitored value is
higher than the
upper limit, and
time T has expired.
U
Lo
U
Up
– mode
If the monitored value
of 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
U
Lo
or U
Up
– modes
When passing the
hysteresis value.
U
Lo
U
Up
– mode
When passing the
U
Lo
or U
Up
value.
RESET MEMORY
Pressing “SET/RESET”
> 1 sec.
C = output contact
Normally open 11-14
(6-2) closed.
*RESET MEMORY = Pressing “SET/RESET“ > 1 s
U
Lo
...U
Lo
+ Hys U
Up
...U
Up
– Hys U
Up
...U
Lo
L1
13 5 7 9
A1
24 6810
14 12 11
3~U ASY
U= 400 V AC 3
~
(50/60 Hz )
L2
L3
A2 A3
Type 71.31.8.400.2000
Switch off
Phase asymmetry
Incorrect phase rotation
Phase loss
LED
• ASY yellow
Phase asymmetry
LED
• DEF red
Voltage to A1 (1) and/or
A2 (5) > 1.11 U
N
LED • ON green
Monitoring system is
active and 400 V supply
voltage is connected to
1-5 or A1-A2.
C = output contact
Normally open 11-14
(6-2) closed.
Programmable
MEMORY ON
MEMORY OFF
XI-2012, www.findernet.com