Motor Temperature Measurement Through An Analogue I/O Extension - ABB ACS800 Firmware Manual

Motor temperature measurement through an analogue I/O extension

This section describes the motor temperature measurement of one motor when an
optional analogue I/O extension module RAIO is used as the connection interface.
WARNING! According to IEC 664, the connection of the motor temperature sensor
to the RAIO module 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 fulfil the
requirement:
• The RAIO module terminals must be protected against contact and they may not
be connected to other equipment.
Or
• The temperature sensor must be isolated from the RAIO module terminals.
One sensor
Three sensors
T
See also section
Motor
T
10 nF
(> 630 V AC)
Motor
T
T
10 nF
(> 630 V AC)
Motor thermal protection
RAIO module
AI1+
AI1-
AO1+
AO1-
SHLD
RAIO module
AI1+
AI1-
AO1+
AO1-
SHLD
on page 75.
The capacitor voltage
rating must be 630 V AC
at least.
Program features
83