EN
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P53 f_start [-, BLDC, -]
Start-up frequency for micro step start-up. If P51-t_start is set to "without ramp", the motor start begins
at the frequency f_start; if a ramp time is set in P51-t_start, the start-up begins at frequency 0 and is
slowly increased up to f_start. On reaching the start frequency, the micro step start-up is terminated. If
the motor does not start up reliably, f_start should be increased.
Minimum value: 1 Hz
Maximum value: 30 Hz
Factory setting: 8 Hz
P54 t_off [-, BLDC, -]
Switch-off time of the inverter.
In the micro step start-up, the inverter is repeatedly switched off briefly in a cyclic manner in order to
measure the e.m.f. voltage of the BLDC motor; this is used for detecting the position of the rotor at low
speeds. In the case of larger inductances of the motor winding, longer times should be set.
Setting rule: If the BLDC motor starts up poorly or synchronizes poorly with the motor, longer times
should be set; it may also be necessary to increase the start-up frequency in P53-f_start.
Minimum value: 200 µs
Maximum value: 1,000 µs
Factory setting: 330 µs
P55 t_DC_brake [ASM, -, -]
Time for DC brake in ASM motor,
0 = no DC brake. If this parameter is set to values 0, P56-I_DC_brake should also be set.
Specific values: DC-brake off - There is no DC braking
Minimum value: 0.1 sec
Maximum value: 120 sec
Factory setting: DC-brake off
P56 I_DC_brake [ASM, -, -]
Current for DC brake in ASM motor, displayed only if P55-t_DC_brake is not set to off.
Minimum value: 0.1 A
Maximum value: 10 A
Factory setting: 1 A
P57 I_DC_stop [ASM, BLDC, BLDCS]
Stop current, this current flows in the stopped motor through 2 phases; the 3rd motor phase is current
less and the motor is thus braked (ASM motor) or is kept in a defined position (BLDC or BLDCS motor).
Specific values: Off - With stopped motor, no stop current is output
Minimum value: 0.1 A
Maximum value: 3 A
Factory setting: Off
P58 emerg. stop [ASM, BLDC, BLDCS]
Parameter influences the behaviour on mains failure.
Values: Inactive
- At mains failure, the motor runs out freely and there is no braking.
On at mains off
- The motor is braked with maximum power of the brake resistance as long as the
inverter can still supply itself from the motor voltage.
Factory setting: Inactive
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