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Bosch Rexroth AG
Instructions for Use
LED
Color / status
H52.4
DC Bus In
H52.5
Drives
Flashing
H53
42V Out
H54
DC Bus Out
5.6
Replacing Fuses F4 and F5
Significance
Off
DC bus voltage (L+; L-) too low
Module bus not connected (if H54 green)
Green
DC bus voltage (L+; L-) without error
(Ud), regular status
Green
No error at module bus, regular status
Red
Module bus error (/Bb_A)
Red/
Drive system carries out error reaction
green
(Bb_A)
Green
Control voltage for KSM at output X53
okay
Red
Control voltage for KSM at output X53
faulty or control voltage outside of toler‐
ances
Error is saved until device is switched off
Off
DC bus (L+, L-) not ready for power out‐
put
Green
DC bus (L+, L-) ready for power output
Red
DC bus voltage (L+; L-) at output X54 not
okay
Fig.5-17:
LED Displays KCU02
WARNING
Before working on live parts: De-energize installation and secure power
switch against unintentional or unauthorized re-energization.
Wait at least 30 minutes after switching off the supply voltages to allow dis‐
charging.
Check whether voltage has fallen below 50 V before touching live parts!
DOK-INDRV*-KCU02*UL***-IN01-EN-P
Rexroth IndraDrive Mi Electronic Control System KCU02
Measures
Switch power on at supply unit
Connect module bus (connection point
X1)
None
None
●
Check module bus wiring
●
Check control voltage supply of the
devices; see also "F2087 Module
group communication error"
Make device at module bus ready for op‐
eration; see also diagnostic message
"E2810 Drive system not ready for opera‐
tion"
None
Overload at output:
●
Check control voltage supply
●
Check voltage at X53
●
Reduce load
●
Remove short circuit
None
None
Check fuses F4, F5 and replace them, if
necessary
Lethal electric shock by live parts with more
than 50 V!
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