Terminal block X50 (auxiliary power input for internal boards)7
Terminal block X51 and X52 (Safe torque off in inverter modules only)8
Terminal block X53 (24 V DC power output)9
Auxiliary voltage selector X59 (115 or 230 V)10
Unpainted fastening hole. The grounding point between module frame and cabinet frame.11
Coolant connectors
The coolant pipe inlet and outlet connectors are located at the bottom front of the
module. The connectors are for 16/13 millimeter PA (polyamide) pipe.
Connectors X50…X59
R8i modules contain a power supply (BDPS) that provides 24 V DC for the circuit boards
of the module.
The BDPS is powered internally from the DC link.
Auxiliary voltage inputs for internal power supply (BDPS)
24 V DC output (for eg. BCU control unit)
24V OUT
X53
GND
+24V
GND
+24V
FE
Auxiliary voltage: 230 V AC
Auxiliary voltage: 115 V AC
Fiber optic connectors
DescriptionName
Charging controller connection.BSFC
Control unit connection.BCU
Operation principle and hardware description 27