Functions and Technical Specifications
4-9
EM 148-FC
Frequency Converter
A5E00065321-03
Table 4-5
Parameters of the Frequency Converter, continued
Parameters
Default
Parameter values via
DDB file
Possible settings
Smoothing
None (0 s)
Slight (8 s)
Medium (22 s)
Strong (40 s)
None
Counterclockwise
rotation
Disable
Enable
Enable
4.2.2
Meaning of the parameters
Reaction to CPU-/master-STOP
This parameter controls the behavior of the frequency converter if the controlling
CPU goes into STOP or if DP communication fails.
Rapid stop:
Standstill in half the ramp-down time
Ramp down:
Ramp down to standstill with set ramp-down time
Coast to a standstill:
Voltage disconnection (if the External brake control parameter is set to
Enable, the external brake is also activated).
Keep last value:
Motor continues to run with the last valid setpoint value.
Behavior after CPU/master restart:
After the CPU is restarted, the frequency converter can continue to run without
interruption when the last valid control word is sent again in the startup OB of the
CPU. For this to happen, the control word must be stored in a retentive memory
area.
After the DP master restarts, the frequency converter carries out an emergency
stop by means of voltage disconnection and the external brake and must then be
reparameterized.
Operation in Europe/USA
This parameter defines the unit for the Rated power of motor parameter:
EUR: Rated power of motor in kW (1 kW = 1.341 hp)
USA: Rated power of motor in hp (1 hp = 0.746 kW)
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Страница 66: ...Mode of Functioning 5 10 EM 148 FC Frequency Converter A5E00065321 03 ...
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