Fault In The Feedback Circuit X1-X2; Simultaneity Fault Signal L2 / L3; Fault On The Potentiometer For The Voltage Threshold; Fault On The Potentiometer For The Time Setting - Siemens SIRIUS 3TK2810-0 Equipment Manual

8.4.4

Fault in the feedback circuit X1-X2

A feedback circuit fault has been detected.
The device expects that the inputs X1-X2 are bridged when the output circuits (normally
open contacts) 23, 24; 33, 34; 43, 44 are switched off. If this is not the case, there is a
feedback circuit fault, e.g. due to a welded external contactor or a wire break in the feedback
circuit.
This fault must be acknowledged, i.e. even after the fault has been eliminated, the device
remains in the fault state until it has been acknowledged by bridging terminals X2-X3.
8.4.5

Simultaneity fault signal L2 / L3

A simultaneity fault has been detected between L2 and L3.
If the measured signals are different for more than 2.5 s (one channel > U
a simultaneity fault is reported.
If subsequently also the measurement channel, which had signals > U
signals (measurement input voltage became < U
the output enable remains blocked.
The simultaneity fault message is only reset when signals > U
simultaneously on both channels. If the measured signals of both channels then become
< U
an
8.4.6

Fault on the potentiometer for the voltage threshold

An internal fault has been detected on the U
To correct the fault, set the desired detent position again. Make sure that the potentiometer
engages noticeably.
Then switch the supply voltage at A1-A2 off and on again. If the fault is still present after
switching off and on again, the device remains in the fault state and must be replaced.
8.4.7

Fault on the potentiometer for the time setting

An internal fault has been detected on the t potentiometer for the time setting.
To correct the fault, set the desired detent position again. Make sure that the potentiometer
engages noticeably.
Then switch the supply voltage at A1-A2 off and on again. If the fault is still present after
switching off and on again, the device remains in the fault state and must be replaced.
3TK2810-0 standstill monitor
Equipment Manual, 08/2023, A5E50307927002A/RS-AA/001
again (simultaneously), the output relays pick up again.
8.4 Display of faults and remedial actions
), the simultaneity fault still remains and
an
are again detected
an
potentiometer for the voltage threshold.
an
Diagnostics
, the other < U ),
an an
, now provides no
an
59