Connecting A Motor Temperature Sensor To The Drive I/O - ABB ACS880-37 Hardware Manual

92 Guidelines for planning the electrical installation
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1) Relay outputs; 2) Varistor; 3) RC filter; 4) diode

Connecting a motor temperature sensor to the drive I/O

WARNING! IEC 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.
To connect a motor temperature sensor and other similar components to the drive, you
have four alternatives:
1. You can connect the sensor directly to the inputs of the drive if there is double or
reinforced insulation between the sensor and the live parts of the motor.
2. If there is no double or reinforced insulation between the sensor and the live parts of
the motor, you can connect the sensor to the inputs of the drive only if all circuits
connected to the drive's digital and analog inputs (typically 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.
3. You can connect the sensor to an extension module with basic insulation (eg, FAIO-
01) or reinforced insulation (eg, FPTC-xx) between the sensor connector and the other
230 V AC
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230 V AC
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+ 24 V DC
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