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XRO3
XD24
XPOW
XRO2
XDIO
XAO
XRO1
XDI
XAI
X485
XSTO
XD2D
XSTO
OUT
Description
XAI
Analog inputs
XAO
Analog outputs
XDI
Digital inputs, Digital input interlock (DIIL)
XDIO
Digital input/outputs
XD2D
Drive-to-drive link
XD24
+24 V output (for digital inputs)
XETH
Ethernet port (eg. for PC communication)
XPOW
External power input
XRO1
Relay output RO1
XRO2
Relay output RO2
XRO3
Relay output RO3
XSTO
Safe torque off connection (input signals). Safe
torque off functionality is not available in the
DC/DC converter units. See
connection diagram
XSTO OUT Safe torque off connection (output for powering
XSTO inputs)
X12
(On the opposite side) Connection for FSO-xx
safety functions module (optional, not in use in
DC/DC converter units).
X13
Control panel connection
X485
Not in use
V1T/V1R,
Fiber optic connection to converter modules 1
V2T/V2R
and 2 (VxT = transmitter, VxR = receiver)
V3T/V3R
Fiber optic connection to converter modules 3...7
...
(BCU-12/22 only)
V7T/V7R
(VxT = transmitter, VxR = receiver)
V8T/V8R
Fiber optic connection to converter modules
...
8...12 (BCU-22 only)
V12T/V12R
(VxT = transmitter, VxR = receiver)
SD CARD
Data logger memory (SD) for converter module
communication
BATT OK
Real-time clock battery voltage is higher than
2.8 V. If the LED is off when the control unit is
powered, replace the battery.
FAULT
The control program has generated a fault. See
the firmware manual of the converter unit.
PWR OK
Internal voltage supply is OK
WRITE
Writing to memory card in progress. Do not
remove the memory card.
Control unit 165
Default I/O
on page 162.
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