
76 Program features
Sensor insulation and connection
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 fulfill this requirement, connect a thermistor to the drive’s control terminals
using any of these alternatives:
• Separate the thermistor from live parts of the motor with double reinforced
insulation.
• Protect all circuits connected to the drive’s digital and analog inputs. Protect
against contact, and insulate from other low voltage circuits with basic
insulation (rated for the same voltage level as the drive’s main circuit).
• Use an external thermistor relay. The relay insulation must be rated for the
same voltage level as the drive’s main circuit.
AI1
GND
One sensor
AO
GND
AI1
GND
AO
GND
Three sensors
Motor
3.3 nF
Motor
3.3 nF
One sensor
Three sensors
T
AO
GND
AI1
GND
T
T
T
AO
GND
AI1
GND
Summary of Contents for ACS280
Page 1: ... ABB MACHINERY DRIVES ACS280 coldplate drives Firmware manual ...
Page 4: ......
Page 10: ...10 ...
Page 16: ...16 Control panel ...
Page 20: ...20 Start up ID run and use ...
Page 24: ...24 Default control connection ...
Page 88: ...88 Program features ...
Page 298: ...298 Parameters ...