Page 759 - Motor protection and control Manual motor starters, contactors and overload relays

ABB MOTOR PROTECTION AND CONTROL 7/3

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Thermistor motor protection relays
Operating controls

1 Test / Reset button

Reset - only possible if measured value < switch-on resistance
2 Indication of operational states with LEDs

U: green LED - Status indication of control supply voltage V
Control supply voltage applied
F: red LED - Fault message
R: yellow LED - Status indication of the output relay
1 3 Marker label / DIP switches (depending on device) e.g.

i Single evaluation 2 x 1 c/o (SPDT) contact
j Accumulative evaluation 1 x 2 c/o (SPDT) contacts
y Short-circuit detection de-activated
2 x Short-circuit detection activated
f Non-volatile fault storage activated
e Non-volatile fault storage de-activated
Reset Remote Reset
Remote
Test/Reset Remote Test/Reset
Remote
3

2CDC 253 001 F0015 07

LEDs, status information and fault messages CM-MSS
Operational state U: green LED F: red LED R: yellow LED
Absence of control supply voltage OFF OFF OFF
Internal fault (2) OFF W W
Internal fault (2) X X X
Control supply voltage not within the tolerance range X V OFF
Short circuit V Y OFF
Interrupted wire V Z OFF
Measuring circuit 2: Overtemperature V W OFF
Measuring circuit 1: Overtemperature V V OFF
Fault rectified but not confirmed V -- (1) X
Test function X OFF OFF
Change of configuration not confirmed V OFF X
No fault V OFF V
(1) Depending on the fault with the highest priority
(2) Restart the device. If after restart the same fault is indicated, replace the device.