Motor Temperature Measurement Through The Standard I/O - ABB ACS355 User Manual

Motor temperature measurement through the standard I/O

This section describes the temperature measurement of one motor when the drive
I/O terminals are used as the connection interface.
Motor temperature can be measured using PT100 or PTC sensors connected to
analog input and output.
One sensor
Motor
T
3.3 nF
WARNING! According to IEC 664, the connection of the motor temperature
sensor requires double or reinforced insulation between motor live parts and
the sensor. Reinforced insulation entails a clearance and creepage distance of 8 mm
(400/500 V AC equipment).
If the assembly does not fulfill the requirement, the I/O board terminals must be
protected against contact and they may not be connected to other equipment, or the
temperature sensor must be isolated from the I/O terminals.
Three sensors
AI1
Motor
GND
T T
AO
GND
Program features 155
T
3.3 nF
AI1
GND
AO
GND