Default I/O diagram of the converter control unit (BCU)
The diagram below shows the default I/O connections of the BCU control unit of the
converter, and describes the use of the signals/connections. Under normal
circumstances, the factory-made wiring should not be changed.
The wire size accepted by all screw terminals (for both stranded and solid wire) is
0.5 … 2.5 mm
2
(22 … 12 AWG). The tightening torque is 0.45 N·m (4 lbf·in).
DescriptionTerminal
Drive-to-drive linkXD2D
Not in use by default
B1
A2
BGND3
Shield4
Drive-to-drive link termination switch
1)
D2D.TERM
RS485 connectionX485
CIO-01 module connection (optional)
B5
A6
BGND7
Shield8
Relay outputsXRO1, XRO2, XRO3
XRO1: Not in use
250 V AC / 30 V DC, 2 A
Norm. closedNC11
CommonCOM12
Norm. openNO13
XRO2: Fault (-1)
2)
(Energized = no fault)
250 V AC / 30 V DC, 2 A
Norm. closedNC21
CommonCOM22
Norm. openNO23
XRO3: Fan control (DC/DC converter
running, fan control on)
250 V AC / 30 V DC, 2 A
Norm. closedNC31
CommonCOM32
Norm. openNO33
Safe torque offXSTO, XSTO OUT
XSTO: Factory connection. Both circuits (power module, control unit) must
be closed for the unit to start (IN1 and IN2 must be connected to OUT).
3)
OUT1
SGND2
IN13
IN24
XSTO OUT: Not in use
IN15
SGND6
IN27
SGND8
The control unit 69