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