Reduction Of The Max. Dc-Link Voltage; Selection And Ordering Data - Siemens SIMOTICS M 1PH8 Configuration Manual

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 specified 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 (Page 71)").
Derating factors for power and signal cables
The current-carrying capacity of PVC/PUR-insulated copper cables is specified 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
(Page 228)").
3.3.1

Reduction of the max. DC-link voltage

At installation altitudes of 2000 m 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
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 find 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 specified in the tables below define the ordering logic for 1PH8
motors and apply to induction and synchronous motors.
1PH8 SIMOTICS M main motors
Configuration Manual, 12/2022, A5E51895839A
m
2000
3000
4000
5000
6000
7000
8000
Motor description
3.4 Selection and ordering data
Factor
1
0.877
0.775
0.656
0.588
0.513
0.444
35