IMM 8001/8002 – Digital Motor Protection Relay
ICE / CEE
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IMU307-1 GB Ind. B
28
For a reset, proceed in the following way :
Go to the
CONFIGURATION/RESET
item
(last first level item), then to the
RESET
item
(last second level item).
Have access to the reset type.
A counter value which is different from zero is displayed by
---
Change to the
Param
mode.
Press the
ENTER
key.
Press the
CLEAR
key to reset.
The display indicates
0
when resetting is done.
Press the
ENTER
key again.
Change to the read mode again by pressing the
PARAM
key again.
4.2.8.
Emergency restart : ERST key
During the tests or an emergency restart phase, it is possible to immediately reset the measured
thermal state and function [5/66] (start authorisation by t and T).
Resetting can be done by enabling the EL5 input (Emergency restart), or EL6 input (Thermal state
reset), or by making the following operation with the keyboard :
. display the thermal state
θ
,
for instance
. simultaneously press
ERST
and
↑
during at least
5 seconds
. the measured thermal state must change to
0.00
4.2.9.
Latching of relay P
Relay
P
can be latches. Only this relay has this characteristic. This function is useful if the
inhibition of any new start following trip is desired without manual intervention on the relay.
Latching operation for protection
If, for instance, the inhibition of any new start with function [49] thermal image is desired :
- have access to the
SUPERVISION
item
table 1 or 2
,
then to the
P Latching
function,
-
set
P latching = ON.
P manual acknowledgement operation
- press the
CLEAR
key during about 5 seconds,
- relay
P
is de-energised.
Latching cancellation for P
- set
P latching to OFF.