Connection Of Motor Temperature Sensor To The Drive Via A Relay - ABB ACS880 Electrical Planning Instructions

28 Electrical planning guidelines
• the temperature sensor insulation requirement in order to form, together with the
insulation of the option module, a reinforced insulation between the motor live parts and
the drive control unit.
ACS880
Option module
Type Insulation/Isolation
FIO-11 Galvanic isolation between sensor
connector and other connectors (in-
cluding drive control unit connector)
FEN-xx Galvanic isolation between sensor
connector and other connectors (in-
cluding drive control unit connector)
FAIO-01 Basic insulation between sensor
connector and drive control unit
connector. No insulation between
sensor connector and other I/O
connectors.
Reinforced insulation between
FPTC-
1)
sensor connector and other connect-
xx
ors (including drive control unit con-
nector).
1) Suitable for use in safety functions (SIL2 / PL c rated).
ACS580, ACH580 and ACQ580
Option module
Type Insulation/Isolation
CMOD-02 Reinforced insulation between the
sensor connector and the other
CPTC-02
connectors of the module (including
drive control unit connector). –> No
special requirements for the thermis-
tor insulation level.
(The drive control unit is PELV
compatible also when the module
and a thermistor protection circuit
are installed.)
￭

Connection of motor temperature sensor to the drive via a relay

PTC alternative A: This table shows the insulation requirement for a customer's external
relay, and the insulation requirement for the sensor to fulfill decisive voltage class A (double
insulation) of IEC 60800-5-1. The table also shows the insulation of the factory-installed
relay (plus code option for a cabinet-installed drive), and the insulation requirement for the
sensor.
Temperature sensor
type
PTC KTY Pt100,
Pt1000
- x x
x x -
x x x
x - -
Temperature sensor
type
PTC KTY Pt100,
Pt1000
x - -
x - -
Temperature sensor insulation
requirement
Reinforced insulation
Reinforced insulation
Basic insulation. Connectors of op-
tion module other than sensor con-
nector must be left unconnected.
No special requirement
Temperature sensor insulation
requirement
No special requirement
No special requirement