Lenze 9300 vector Série Instructions De Montage page 175

Motor with PTC thermistor or thermal contact (NC contact)
Wire T1, T2 only if the motor is equipped with a PTC thermistor or thermal contact
(NC contact).
An "open" cable acts like an antenna and can cause faults on the drive controller.
ƒ
{
Danger!
ƒ
ƒ
2.7 k
T1 T2
PES
PES
Fig. 5−5
Characteristics of the connection for motor temperature monitoring:
Terminals T1, T2
Connection
Tripping point
Notes
EDKVF9333V DE/EN/FR 7.2
Standard devices in the power range 0.37 ... 11 kW
All control terminals only have basic insulation (single isolating distance)
after connecting a PTC thermistor or a thermal contact.
Protection against accidental contact in case of a defective isolating
distance is only guaranteed through external measures, e. g. double
insulation.
15 V
7.4 k
3.3 k
MONIT-OH8
PE U V W +UG -UG
PES
PES
J>
PES
M
PE
3~
Circuit diagram of motor connection with PTC thermistor or thermal contact (NC contact) at T1, T2
l
PTC thermistor
– PTC thermistor with defined tripping temperature (acc. to DIN 44081 and
DIN 44082)
l
Thermal contact (NC contact)
– Thermostat as NC contact
l Fixed (depending on the PTC/thermal contact)
J >
l
PTC: R 1600

l
Configurable as warning or error (TRIP)
l
Monitoring is not active in the Lenze setting.
l If you do not use a Lenze motor, we recommend the use of a PTC thermistor up
to 150°C.
l
Electrical installation
Motor connection
W
5
9300vec139
175