NORD Drivesystems BU0750 - Manual (Page 23)

2 Assembly and installation
BU 0750 GB-3311 Subject to technical amendments 23
2.9.5 Temperature sensor (T1, T2)
This input can be used to evaluate a temperature sensor (thermistor or temperature-
controlled switch) in order to prevent overheating.
If the thermistor has a high resistance or the temperature controlled switch opens, the
frequency inverter switches off and reports a motor overtemperature error (E001).
If no temperature sensor is used, terminals T1 and T2 must be bridged.
An error message can be acknowledged by switching the mains off and on again, or by
pressing the ENTER key on a control display (ControlBox or ParameterBox).
NOTE
The cable routing of the control cables or temperature sensor should always be separate from the
motor cable and be made with shielded cables.
Internal switching in the inverter prevents excessive voltage to the thermistor. Further details can be
found in Section 8, Error messages.
Evaluation of a temperature sensor is also possible by means of the optional customer units (SK CU1-...).
Further details can be found in Section 3.3, Overview of customer units.
2.9.6 PowerConnection Terminals
Size 1:
SK 750E-551-323-A ... SK 750E-751-323-A (5.5 / 7.5kW, 230V)
SK 750E-551-340-A ... SK 750E-152-340-
A (5.5 … 15kW, 400V)
Terminal block Mains input Mech. Brake Brake resistor Motor output Temp. Sensor
VDE rigid 0.5 - 16mm² 0.2 - 6mm
2
0.2 - 6mm² 0.5 - 16mm² 0.14 - 2.5mm²
VDE flexible 0.5 - 10mm² 0.2 - 4mm
2
0.2 - 4mm² 0.5 - 10mm² 0.14 - 2.5mm²
UL/cUL AWG 20-6 AWG 24-10 AWG 24-10 AWG 20-6 AWG 26-14
Size 2:
SK 750E-921-323-A ... SK 750E-112-323-A (9.2 / 11kW, 230V)
SK 750E-182-340-A ... SK 750E-222-340-A (18.5 / 22kW, 400V)
Terminal block Mains input Mech. Brake Brake resistor Motor output Temp. Sensor
VDE rigid 0.5 - 35mm² 0.2 - 6mm
2
0.5 - 16mm² 0.5 - 35mm² 0.14 - 2.5mm²
VDE flexible 0.5 - 25mm² 0.2 - 4mm
2
0.5 - 10mm² 0.5 - 25mm² 0.14 - 2.5mm²
UL/cUL AWG 20-2 AWG 24-10 AWG 20-6 AWG 20-2 AWG 26-14