ABB ACS880-07LC, Hardware Manual

Page: 112 / 222

Notes:
1)
See section The XD2D connector (page 113) .
2)
See chapter The Safe torque off function (page 201) .
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 (page 113) .
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
BCU-x2 ground isolation diagram (page 117) .
DICOM=DIOGND ON: DICOM connected to DIOGND. OFF: DICOM and DIOGND separate.
8)
Current [0(4)…20 mA, R
in
= 100 ohm] or voltage [0(2)…10 V, R
in
> 200 kohm] input
selected by switch AI1. Change of setting requires reboot of control unit.
9)
Current [0(4)…20 mA, R
in
= 100 ohm] or voltage [0(2)…10 V, R
in
> 200 kohm] input
selected by switch AI2. Change of setting requires reboot of control unit.
Additional information on the connections
￭ External power supply for the control unit (XPOW)
The control unit is powered from a 24 V DC, 2 A supply through terminal block XPOW. With
a type BCU control unit, a second supply can be connected to the same terminal block for
redundancy.
Using an external supply is recommended if
• the control unit needs to be kept operational during input power breaks, for example,
because of continuous fieldbus communication
• immediate restart is needed after a power break (that is, no control unit power-up delay
is allowed).
￭ DI6 as a PTC sensor input
PTC sensors 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, for example 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 of the inverter unit for
parameter settings.
1
...
+24V
DI6
+ t ° + t ° + t ° + t ° + t °
+ t °
One to six PTC thermistors connected in series 1
112 Control units of the drive