Connection examples are shown below.
With signal ground reference terminal
G R - +
1
DGND
2
DGND
2
DGND
23 3 3
ON
1
4
ON
1
ON
1
4
ON
1
ON
1
4
ON
1
B+
A-
B+
A-
B+
A-
Without signal ground reference terminal
G - +
1
DGND
2
DGND
2
DGND
23 3 3
ON
1
4
ON
1
ON
1
4
ON
1
ON
1
4
ON
1
B+
A-
B+
A-
B+
A-
100 ohm
Automation controller1
Drive2
Termination switch. The devices at the ends of the fieldbus must have termination
on. All other devices must have termination off.
3
Biasing switch. One (and only one) device, preferably at the end on the bus must have
the bias on.
4
■
Connecting motor temperature sensors to the drive
IEC/EN 60664 requires double or reinforced insulation between the control unit
and the live parts of the motor. To achieve this, use an CMOD-02 I/O extension
module or CPTC-02 ATEX-certified thermistor protection module. Refer to section
Implementing a motor temperature sensor connection and chapter CMOD-02
multifunction extension module (external 24 V AC/DC and isolated PTC
interface) (page 454).
■
PNP configuration for digital inputs (X2 & X3)
Internal and external +24 V power supply connections for PNP configuration are
shown in the figure below.
224 Control unit