Derating for coolant inlet temperature
The motors are designed for operation up to a cooling water inlet temperature of +30°C,
provided that all of the specied motor data is complied with. If the inlet temperature of the
cooling water deviates from this, the continuous torque will change (see Chapter "Cooling water
inlet temperature (Page71)").
Derating factors for power and signal cables
The current-carrying capacity of PVC/PUR-insulated copper cables is specied for cable
installation types B1, B2, C and E under continuous operating conditions with reference to an
ambient air temperature of 40° C. For other ambient temperatures, the corresponding derating
factors must be considered (see Chapter "Derating factors for power and signal cables
(Page228)").
3.3.1 Reduction of the max. DC-link voltage
At installation altitudes of 2000m above sea level or higher, the voltage stress on the motors
must be reduced accordingly based on the table "Factors for reducing the maximum DC-link
voltage" (reciprocal values from EN 60664-1 Table A. 2).
Table 3-4 Factors for reducing the maximum DC-link voltage
Installation altitude above sea level up to
m
Factor
2000 1
3000 0.877
4000 0.775
5000 0.656
6000 0.588
7000 0.513
8000 0.444
As the DC link voltage is reduced, the converter output voltage also decreases. This reduces
the working range in the torque-speed diagram.
You will nd the torque-speed diagrams in this Chapter "Technical data."
Operation in a vacuum is not permissible because of the low dielectric strength and poor
heat dissipation.
3.4 Selection and ordering data
The Article No. supplements specied in the tables below dene the ordering logic for 1PH8
motors and apply to induction and synchronous motors.
Motor description
3.4Selection and ordering data
1PH8 SIMOTICS M main motors
Conguration Manual, 12/2022, A5E51895839A 35
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