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6. Troubleshooting
MAINS
B
A
Display green:
MAINS
H3
Power supply OK.
H4
POWER
MAINS
B
A
Display dark:
MAINS
H3
Power supply faulty.
H4
POWER
Cause :
voltage too low.
Remedy
Check main connection (rated value: 3 x 380...480 V
POWER
B
A
Display green:
MAINS
H3
Internal mains contctor ON; DC bus voltage OK.
H4
POWER
POWER
B
A
Display dark:
MAINS
H3
Mains contactor not on; fault in DC bus.
H4
POWER
Cause 1: Mains contactor not on
Remedy
Check circuit at X2/6 (+ 24 V
Cause 2: DC bus smoothing choke missing or improperly connected
Remedy
Check connection of smoothing bus choke (between X7/1L+ and X7/
2L+).
Cause 3: Faulty rectifier
Remedy
Replace unit.
• DOK-POWER*-TVD*1.3****-ANW1-EN-E1,44 • 02.97
Main fuse acutated, mains phase at X7 missing or mains
against 0 V
L
(Operating status)
(Fault - not stored)
±
10 %)
AC
(Operating status)
(Fault - not stored)
).
L
55
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