54 / 93 Issued: 20.04.2018 Version: Spez KR C4 compact V10
KR C4 compact
Handle brackets
6.3 Connection conditions
Power supply
connection
The robot controller may only be connected to grounded-neutral power supply
systems.
Cable lengths For cable designations, standard lengths and optional lengths, please refer to
the operating instructions or assembly instructions of the manipulator and/or
the assembly and operating instructions for KR C4 external cabling for robot
controllers.
Fig. 6-2: Dimensions of handle brackets
Rated supply voltage 200 V - 230 V AC, single-phase,
two-phase (with grounded neutral
(as symmetrical as possible)
between the phases used
Permissible tolerance of rated sup-
ply voltage
Rated supply voltage ±10%
Mains frequency 50 Hz ± 1 Hz or 60 Hz ± 1 Hz
Rated power input 2 kVA, see rating plate
Thermal power dissipation max. 400 W
Mains-side fusing 2x 16 A slow-blowing (1 (2)x phase;
1x neutral conductor (optional))
Equipotential bonding The common neutral point for the
equipotential bonding conductors
and all protective ground conduc-
tors is the reference bus of the
power unit
If the robot controller is connected to a power system
without a grounded neutral, this may cause malfunc-
tions in the robot controller and material damage to the power supply units.
Electrical voltage can cause injuries. The robot controller may only be oper-
ated with grounded-neutral power supply systems.
If use of a residual-current circuit-breaker (RCCB) is planned, we rec-
ommend the following: trip current difference 300 mA for controllers
up to and including WK35/2017 (see identification plate), and trip cur-
rent difference 30 mA per robot controller, universal-current sensitive, selec-
tive, for controllers from WK36/2017 onwards.
When using smartPAD cable extensions, only two extensions may be
used. An overall cable length of 50 m must not be exceeded.
The difference in the cable lengths between the individual channels
of the RDC box must not exceed 10 m.
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