KEB COMBIVERT F5-A Applications Manual page 407

Behaviour on reaching
3, 4
standstill
5 Power off mode
Voltage setpoint selection
6, 7 (not for vector controlled
DSM)
Voltage stabilization at po-
8
wer off (only v/f-char.)
Power Off: Status = error,
9 if no restart after system
recovery
Tripping of power off
The power-off function starts when the DC-link voltage drops below a certain value (start voltage). The start
voltage can be set automatically or manually depending on Pn.44 Bit 1.
Starting voltage (Pn.45)
The starting voltage can be preset with Pn.45 in the range of 200...1200 volt at manual setting. The adjusted
starting voltage must be at least 50V over the UP-threshold for safe operation (UP: 200V class = 216V DC;
© KEB, 2012-10 COMBIVERT F5-A, -E, -H
Protective functions
0: Mod. on, no restart
8: Mod. on, restart
16: PLS, no restart
24: reserved
0: act. start voltage
32: dig. input of Pn.49
0: Starting voltage
64: Voltage setpoint Pn.50
(only v/f-characteristic)
128: Voltage setpoint Pn.50,
if output speed < Pn.48
(only v/f-characteristic)
192: Brake torque (Pn.47)
0: on
256: off
0: no error
512: Error, if no restart
Status "78: power-off function active"
(POFF), modulation on, reset required
Status "78: Power-off function active"
(POFF), modulation on, restart on
power recovery after Pn.52 "power off
restart delay"
Status "84: no direction of rotation after
power off" (PLS), modulation off, reset
required
reserved
Start according to the setting of bit 1
Start via digital input
Bridging of mains gaps.
Restart on power recovery, as long as
the initial speed is not lower than Pn.48
"power off restart level".
Emergency stop without braking mo-
dule
Restart possible only on reaching
standstill.
Bridging of mains gaps.
Restart on power recovery above
Pn.48 "power off restart level".
Setpoint increase from initial voltage to
voltage setpoint below Pn.48.
Emergency stop with braking module
Restart possible only on reaching
standstill.
Voltage stabilization during power off =
uF.09
Voltage stabilization during power off
deactivated
The status changes to error as soon
as the restart value (Pn.48) is decrea-
sed at active power off function or the
maximum time for restart (Pn.96) is
elapsed.
This applies to SY. 51 bit 1, SY. 44 bit
1, SY. 79 bit 3 and switching conditions
do.00-07 = 3-5.
The inverter status (ru.00) does not
change, but the error LED flashes.
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