8.5.2
Diagnostics
8.5.2.1
Diagnostics via LEDs
LEDs of the open-loop and closed-loop control cabinet
Table 8-1
Meaning of indicator lights
Indicator light
Action
Meaning
H21
White
Continuous light
The converter is in operation. The circuit breakers are
switched on and the converter pulses are enabled.
White
Flashing light
● The converter is starting up. The auxiliaries are
switched on and the circuit breakers are closed.
● The auxiliary circuits and the circuit breakers are
switched on, the converter pulses are disabled.
● Shutdown cycle OFF1, OFF2 or OFF3 is running.
● The demagnetization equipment is in operation (only in
the case of starting converters).
Test mode is selected.
H22
Green
Continuous light
The converter is ready to start. All circuit breakers are
switched off. OFF2 or OFF3 are not active.
Green
Flashing light
All circuit breakers are switched off. The converter is, how‐
ever, not ready to start. An OFF2/OFF3 or a fault is active.
H23
Yellow
Flashing / contin‐
uous light
Warning
H24
Red
Flashing / contin‐
uous light
Fault
If a fault or an alarm becomes active, the lamp flashes for 5 seconds. It then switches to the
continuous light state. If a new message is occurs while the lamp is continuously lit, the lamp
begins to flash again for 5 seconds and then is again continuously lit. The lamp is extinguished
once the cause of the problem has been resolved.
LEDs of the Sirius safety relay
Table 8-2
LEDs of the Sirius safety relay
LED
Operation
POWER
CHANNEL1
CHANNEL2
Line supply
EMERGENCY
STOP
ON
Release circuits
☀
☀
☀
On
Not actuated
Actuated
Closed
☀
○
○
Actuated
Not actuated Open
☀
○
○
Not actuated
Not actuated Open
Fault
Operation
8.5 Fault and system messages
SINAMICS GL150 6SL38555UN113KA0Z
Operating Instructions Rev.201910281450 EXAMPLE
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