Siemens SIMATIC EM 148-FC, Manual

Page: 53 / 76

Functions and Technical Specifications
4-19
EM 148-FC Frequency Converter
A5E00065321-03
Terminating manual operation
To terminate manual operation, press the “remote” key on the hand-held controller.
!
Warning
If control bits 0 to 6 and 10 are set (e. g. control word 047F
H
) when you terminate
manual operation, the motor will automatically ramp up to the setpoint frequency.
This happens, for example, if the motor was running when you switched to manual
operation.
You can avoid this potentially dangerous situation if the programmable controller
detects manual mode by evaluating status bit 9 and resets one of the control bits 0
to 3.
Additional functions of the hand-held controller
The additional functions of the hand-held controller are described in the EM300
Motor Starter manual. The information on the motor starter contained in the
manual also applies to the Frequency Converter frequency converter.