ABB ACS880-07, Hardware Manual

Page: 136 / 274

„
„
„
1 2 3 4
B A
BGND
SH
IE
L
D
XD
2
D 1 2 3 4
B A
BGND
SH
IE
L
D
XD
2
D 1 2 3 4
B A
BGND
SH
IE
L
D
XD
2
D
Termination ON Termination ON Termination OFF
￭ Safe torque off (XSTO, XSTO OUT)
On the inverter control unit (A41), the XSTO input can be used to implement a safe torque
off (STO) function. For the drive to start, both connections (OUT1 to IN1 and IN2) must be
closed. By default, the terminal block has jumpers to close the circuit. Remove the jumpers
before connecting an external Safe torque off circuit to the drive. For information on the
implementation of a Safe torque off function, see chapter
The Safe torque off
function (page 253) .
Note:
The XSTO input only acts as a true Safe torque off input on the inverter control unit [A41].
De-energizing the IN1 and/or IN2 terminals on the supply control unit [A51] will stop the
supply unit but not constitute a true safety function.
The XSTO OUT connector is wired to the STO IN connector of one inverter module. In case
the inverter unit consists of multiple modules, the STO OUT connector of one module is
wired to the STO IN connector of the next module etc. so that all modules are part of the
chain.
￭ FSO-xx safety functions module connection (X12)
See the user manual of the FSO-xx module.
￭ SDHC memory card slot
The BCU-x2 has an on-board data logger that collects real-time data from the power modules
to help fault tracing and analysis. The data is stored onto the SDHC memory card inserted
into the SD CARD slot and can be analyzed by ABB service personnel.
Connector data
Connector pitch 5 mm, wire size 2.5 mm
2
Power supply (XPOW)
24 V (±10%) DC, 2 A
External power input. Two supplies can be connected for redundancy.
Connector pitch 5 mm, wire size 2.5 mm
2
Relay outputs RO1…RO3
(XRO1…XRO3)
250 V AC / 30 V DC, 2 A
Protected by varistors
Connector pitch 5 mm, wire size 2.5 mm 2 +24 V output (XD24:2 and XD24:4)
Total load capacity of these outputs is 4.8 W (200 mA / 24 V) minus
the power taken by DIO1 and DIO2.
136 Control units of the drive