33 / 157V3.3 11.07.2007 KRC-AD-KRC2ed05-BA en
2. Product description
 Mains filter
2.7.1 Power supply unit KPS 600
Description Via the drive bus, commands are received from the robot controller and status 
messages are sent to the robot controller. Communication is monitored by 
means of a watchdog circuit. In the event of a failure, short-circuit braking is 
activated.
The KPS 600 contains:
 Mains contactor
 Power unit with starting circuit
 Ballast circuit, including short-circuit braking relays
 Brake switches (in common for all 6 robot axes and separate for 2 external 
axes)
 Interface to DSE-IBS and servo drive modules
 Battery charging circuit, disconnection of the backup voltage, voltage dis-
tribution 24 V
 Interbus monitoring
 Fan cutoff (output), fan monitoring (input)
 Interface with the safety logic
 Temperature monitoring of:
 Heat sink
Fig. 2-20: Power unit
1 Low-voltage power supply KPS-27
2 Fuse elements (24 V without battery back-up)
3 Mains filter
4 Main switch (EU version)
5 Fan for inner cooling circuit
6 Power supply unit KPS600
7 KSDs for 2 external axes (option)
8 KSDs for 6 robot axes
9 Fuse elements (24 V with battery back-up)