Operating instructions i550 motec frequency inverter | 16
© 03/2022 · EN · www.Lenze.com
PTC input
In the default setting, the motor temperature monitoring is active!
0.37 ... 5.5 kW
Connection Motor connector/terminal X105
Connection type Spring terminal, not pluggable
Max. cable cross-section mm² 4
Stripping length mm 8
Required tool
0.6 x 3.5
Application
T1
Connection of PTC or thermal contact
T2
Sensor types
PTC single sensor (DIN44081)
PTC triplet sensor (DIN44082)
Thermal contact
Note: The PT1000 temperature sensor is not
supported
NOTE
If the terminals T1 and T2 are used, e.g. to connect an external PTC thermistor or a thermal
contact, ensure at least one basic insulation to the potentials of motor, mains and M12
connectors as well as to the auxiliary supply to not restrict the safe isolation of the M12
connectors.
Electrical installation
3-phase | 480 V3-phase | 230/240V
3-phase | 400 V
Control connections
Connection diagram
Networks
Functional safety
Safe torque o (STO)
PTC input
Preparation
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