ABB ACS880-M04, Hardware Manual

Page: 87 / 195

Electrical installation 87
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External power supply for the control unit (XPOW)
By default, the ZCU control unit is powered from the power module. An external
24 V DC, 2 A power supply for the control unit can be connected to terminal block
XPOW.
It is recommended to use an external supply if
• the control board needs to be kept operational during input power breaks, for
example, because of uninterrupted fieldbus communication, or
• immediate restart is needed after power breaks (that is, no control board power
up delay is allowed).
See also description of parameter 95.04 Control board supply in the firmware
manual.
1)
Current [0(4)…20 mA, R
in
= 100 ohm] or voltage [0(2)…10 V, R
in
> 200 kohm] input selected by jumper
J2.
Note:
Changing the setting requires reboot of control unit.
2)
Current [0(4)…20 mA, R
in
= 100 ohm] or voltage [0(2)…10 V, R
in
> 200 kohm] input selected by jumper
J1 .
Note : Changing the setting requires reboot of control unit
3)
See section Drive-to-drive link (page 90 ).
4)
See chapter The Safe torque off function (page 141 ).
5)
Constant speed 1 is defined by parameter 22.26.
6)
0 = Acceleration/deceleration ramps defined by parameters 23.12/23.13 in use.
1 = Acceleration/deceleration ramps defined by parameters 23.14/23.15 in use.
7)
Jumper/switch J6. Determines whether DICOM is separated from DIOGND (ie. common reference for
digital inputs floats; in practice, selects whether the digital inputs are used in current sinking or sourcing
mode). See
Ground isolation diagram (ZCU) (page 94 ).
8)
See section DIIL input (page 89 )
9)
Total load capacity of these outputs is 4.8 W (200 mA at 24 V) minus the power taken by DIO1 and
DIO2.