ABB ACQ810-04, Hardware Manual, Page: 97 / 144

Installation 97
External power supply for the JCU control unit (XPOW)
Ex24 V (minimum 1.6 A) power supply for the control unit can be connected to
terminal block XPOW. Using an external supply is recommended if
•
the application requires fast start after connecting the drive to the main supply
•
fieldbus communication is required when the input power supply is disconnected.
DI5 (XDI:5) as a thermistor input
1…3 PTC sensors can be connected to this input for motor temperature measurement.
Notes :
•
Do not connect both ends of the cable shields directly to ground. If a capacitor cannot
be used at one end, leave that end of the shield unconnected.
•
The connection of temperature sensors involves parameter adjustment. See the
Firmware manual of the drive.
•
Pt100 sensors are not to be connected to the thermistor input. Instead, an analog
input and an analog current output (located either on the JCU or on an I/O extension
module) are used as shown below. The analog input must be set to voltage.
Motor
T
Motor
T T T
XDI:5
XD24:1
3.3 nF
> 630 V AC
XDI:5
XD24:1
3.3 nF
> 630 V AC
One sensor Three sensors
Motor
T
Motor
T T T
AI1+ (U)
AI1- (U)
3.3 nF
> 630 VAC
AOx (I)
AGND
AOx (I)
AGND
AI1+ (U)
AI1- (U)
One Pt100 sensor Three Pt100 sensors
3.3 nF
> 630 VAC