Data Sheet

9
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 (asymmetric is shown by the LED ASY).
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.
ASY Phase asymmtery is outside of the predefined range.
LED steady light: output relay is turned off, contact 11-14 (6-2) is open.
LEVEL Selected range as % value.
TIME Delay time min (minutes) or s (seconds).
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 switch manipulation from ON to
OFF to ON, or by power down (71.31.8.400.1021 & 71.92.x.xxx.0001), 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 Up
Lo
.
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 After repeatedly pressing the “SET/RESET” button the measured value will be displayed, or “0” appears if nothing is
instruction 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 Level= value t
1
= T
1
- time during which short-time
A = amp Hys = hysteresis fulctuations are not taken into account
Up =
upper limit (with hysteresis in down direction) M = memory (fault) t
2
= T
2
- (monitoring relay 71.51) the time
Lo = lower limit (with hysteresis in up direction) Yes = yes - with memory during which inrush currents are not
Up
Lo
= upper and lower limit - range detecting no = no - without memory taken into a account
Explanation of relay marking and LED/LCD display
71 Series - Monitoring relays 10 A
XI-2012, www.findernet.com