ABB ACS880-07CLC

1
2
3
230 V AC
+ 24 V DC
4
230 V AC
Relay outputs1
Varistor2
RC filter3
Diode4
Implementing a motor temperature sensor connection
WARNING!
IEC/EN 60664 requires double or reinforced insulation between live parts and the
surface of accessible parts of electrical equipment which are either non-conductive
or conductive but not connected to the protective earth.
You have four implementation alternatives:
1. If there is double or reinforced insulation between the sensor and the live parts of the
motor, you can connect the sensor directly to the analog/digital input(s) of the drive.
2. If there is basic insulation between the sensor and the live parts of the motor, you can
connect the sensor to the analog/digital input(s) of the drive if all other circuits connected
to the digital and analog inputs (typically extra-low voltage circuits) are protected against
contact and insulated with basic insulation from other low-voltage circuits. The insulation
must be rated for the same voltage level as the drive main circuit. Note that extra-low
voltage circuits (such as 24 V DC) typically do not meet these requirements.
3. You can connect the sensor to the drive via an option module. The sensor and the
module must form a reinforced insulation between the motor live parts and the drive
80 Guidelines for planning the electrical installation