External Power Supply For The Control Unit (Xpow); Di6 As A Ptc Sensor Input - ABB ACS880-37 Hardware Manual

136 Control units of the drive
Notes:
The wire size accepted by all screw terminals (for both stranded and solid wire) is
2
0.5 ... 2.5 mm (24...12 AWG). The torque is 0.5 N·m (5 lbf·in).
1)
See section Drive-to-drive link (XD2D)
2)
See chapter The Safe torque off function
3)
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.
4)
Constant speed 1 is defined by parameter 22.26.
5)
See section DIIL input
6)
Total load capacity of these outputs is 4.8 W (200 mA at 24 V) minus the power taken by
DIO1 and DIO2.
7)
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 also
DICOM=DIOGND ON: DICOM connected to DIOGND. OFF: DICOM and DIOGND
separate.
8)
Current [0(4)...20 mA, R
selected by switch AI1. Change of setting requires reboot of control unit.
9)
Current [0(4)...20 mA, R
selected by switch AI2. Change of setting requires reboot of control unit.

External power supply for the control unit (XPOW)


The BCU-x2 is powered from a 24 V DC, 2 A supply through terminal block XPOW. A
second supply can be connected to the same terminal block for redundancy.

DI6 as a PTC sensor input


A PTC sensor can be connected to this input for motor temperature measurement as
follows. The sensor can alternatively be connected to FEN-xx encoder interface module.
At the sensor end of the cable, leave the shields unconnected or ground them indirectly via
a high-frequency capacitor with a few nanofarads, eg. 3.3 nF / 630 V. The shield can also
be grounded directly at both ends if they are in the same ground line with no significant
voltage drop between the end points. See the firmware manual for parameter settings.
PTC
T
(page 137).
(page 237).
(page 137).
Ground isolation diagram
= 100 ohm] or voltage [0(2)...10 V, R
in
= 100 ohm] or voltage [0(2)...10 V, R
in
+24VD
DI6
on page 141.
> 200 kohm] input
in
> 200 kohm] input
in