Temperature sensor insulation
requirement
Temperature sensor
type
Option module
Pt100,
Pt1000
KTYPTCInsulation/IsolationType
Reinforced insulationxx-Galvanic isolation between sensor
connector and other connectors (in-
cluding drive control unit connector)
FIO-11
Reinforced insulation-xxGalvanic isolation between sensor
connector and other connectors (in-
cluding drive control unit connector)
FEN-xx
Basic insulation. Connectors of op-
tion module other than sensor con-
nector must be left unconnected.
xxxBasic insulation between sensor
connector and drive control unit
connector. No insulation between
sensor connector and other I/O
connectors.
FAIO-01
No special requirement--xReinforced insulation between
sensor connector and other connect-
ors (including drive control unit con-
nector).
FPTC-
xx
1)
1)
Suitable for use in safety functions (SIL2 / PL c rated).
￭ 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 insulation
requirement
PTC relay
InsulationType
Basic insulationBasic insulation 6 kVExternal relay
Basic insulationBasic insulation 6 kVDrive options +L505 and +L513
PTC alternative B: Decisive voltage class B of IEC 60800-5-1 (basic insulation) is provided
with a 6 kV relay. Circuits connected to all motor protection relay inputs and outputs must
be protected against direct contact.
Pt100 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 insulation
requirement
Pt100 relay
InsulationType
Basic insulationBasic insulation 6 kVExternal relay
Double or reinforced insulationBasic insulation < 6 kVDrive options +L506 and +L514
Pt100 alternative B: Decisive voltage class B of IEC 60800-5-1 (basic insulation) can be
achieved when there is basic insulation between the sensor and live parts of the motor.
Electrical planning guidelines 33
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