Complying With Speed-Torque Curve; Voltage And Frequency Fluctuations During Line Operation; Phase Synchronization During Supply System Switching; System-Inherent Frequencies - Siemens SIMOTICS FD 1MQ1 Operating And Installation Instructions

4.13

Complying with speed-torque curve

Risk of explosion if the speed-torque characteristic is exceeded
If the load torque exceeds the speed-torque characteristic, then the temperature class can be
exceeded. An explosion can occur. This can result in death, serious injury or material damage.
● It is not permissible that the values defined by the speed-torque characteristic are exceeded.
● Observe the data on the extra rating plate on the motor.
4.14

Voltage and frequency fluctuations during line operation

Unless otherwise stated on the rating plate, the permissible voltage/frequency fluctuation is
corresponds to Zone B in IEC / EN 60034‑1. Permissible fluctuations that go beyond this are
indicated on the rating plate.
Operate the machine in continuous operation in Zone A. Prolonged operation in Zone B is not
recommended:
● Exceeding the permissible tolerances for voltage and frequency can lead to an
● Limit exceptions of this sort with regard to the values that arise, how often, and for how long
● Where possible and within a reasonable time take corrective actions such as reducing the
4.15

Phase synchronization during supply system switching

Damage to the machine may be caused when switching to another supply system with different
phasing.
● The phasing must be synchronized during switching. Use appropriate means to
4.16

System-inherent frequencies

Excessively high vibration levels and system resonances can damage the machine set.
● Configure and match the system consisting of the foundation and machine set in such a way
● The vibration values according to DIN ISO 10816-3 must not be exceeded.
SIMOTICS FD 1MQ1
Operating Instructions 01/2019
impermissibly high temperature rise of the winding. This can result in long-term damage to
the winding.
they occur.
power. In this way you can avoid that the service life of the machine is reduced as a result
of thermal aging.
synchronize the phasing.
that no system resonances can arise and result in the permissible vibration levels being
exceeded.
Preparations for use
4.13 Complying with speed-torque curve
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