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54 The control unit
Default I/O diagram of the brake control unit
The diagram below shows the default I/O connections on the brake control unit, and
describes the use of the signals/connections. Do not change the factory-made wiring.
Refer to the delivery-specific circuit diagrams.
The wire size accepted by all screw terminals (for both stranded and solid wire) is 0.5
2
... 2.5 mm
(24...12 AWG). The torque is 0.5 N·m (5 lbf·in).
Terminal
XD2D
1
B
1
2
2
A
3
3
BGND
4
4
Shield
X485
5
B
5
6
6
A
7
7
BGND
8
8
Shield
XRO1, XRO2, XRO3
11
NC
11
12
COM
12
13
NO
13
21
NC
21
22
22
COM
23
23
NO
31
31
NC
32
32
COM
33
33
NO
XSTO, XSTO OUT
1
OUT
1
2
SGND
2
3
IN1
3
4
4
IN2
5
5
IN1
6
6
SGND
7
7
IN2
8
8
SGND
XDI
Description
Drive-to-drive link
Not in use by default
RS485 connection
Cooling fan monitoring (CIO module)
Relay outputs
Norm. closed
Common
Norm. open
Norm. closed
Common
Norm. open
Norm. closed
Common
Norm. open
XSTO connector
XSTO: Factory connection. Both circuits (power module, control unit) must
be closed for the brake unit to start (IN1 and IN2 must be connected to
2)
OUT).
XSTO OUT: Not in use.
Digital inputs
1)
XRO1: Running
(Energized =
running) 250 V AC / 30 V DC, 2 A
1)
XRO2: Fault (-1)
(Energized = no
fault) 250 V AC / 30 V DC, 2 A
1)
XRO1: Running
(Energized =
running) 250 V AC / 30 V DC, 2 A
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