Settings; Diagnostics - ABB ACS355 User Manual

156 Program features
It is also possible to monitor motor temperature by connecting a PTC sensor and
a thermistor relay between the +24 V DC voltage supply offered by the drive and a
digital input. The figure below displays the connection.
WARNING! According to IEC 664, the connection of the motor thermistor to
the digital input requires double or reinforced insulation between motor live
parts and the thermistor. Reinforced insulation entails a clearance and creeping
distance of 8 mm (400/500 V AC equipment).
If the thermistor assembly does not fulfill the requirement, the other I/O terminals of
the drive must be protected against contact, or a thermistor relay must be used to
isolate the thermistor from the digital input.

Settings

Parameter
Group 13 ANALOG INPUTS
Group 15 ANALOG OUTPUTS
Group 35 MOTOR TEMP MEAS
Other
At the motor end the cable shield should be earthed through, eg a 3.3 nF capacitor. If this is not
possible, the shield is to be left unconnected.

Diagnostics

Actual signal
0145
Alarm/Fault
MOTOR TEMP/MOT OVERTEMP
Par. 3501 = THERM(0)
Thermistor
relay
T
Motor
Additional information
Analog input settings
Analog output settings
Motor temperature measurement settings
Additional information
Motor temperature
Additional information
Excessive motor temp
or THERM(1)
DI1...5
+24 V DC