ABB DCS550 - Page 218

218
Signal and parameter list
3ADW000379R0501 DCS550 Manual e e
Signal / Parameter name
min.
max.
def.
unit
30.21 PwrLossTrip (power loss trip)
The action taken, when the mains voltage undershoots
UNetMin2 (30.23):
0 =
Immediately the drive trips immediately with F512 MainsLowVolt [FaultWord1 (9.01) bit 11], default
1 =
Delayed A111 MainsLowVolt [AlarmWord1 (9.06) bit 10] is set as long as the mains voltage
recovers before PowrDownTime (30.24) is elapsed, otherwise F512 MainsLowVolt
[FaultWord1 (9.01) bit 11] is generated
Int. Scaling: 1 == 1 Type: C Volatile: N
Immediately
Delayed
Immediately
-
30.22 UNetMin1 (mains voltage minimum 1)
First (upper) limit for mains undervoltage monitoring in percent of
NomMainsVolt (99.10). If the mains voltage
undershoots
UNetMin1 (30.22) following actions take place:
−
the firing angle is set to ArmAlphaMax (20.14),
−
single firing pulses are applied in order to extinguish the current as fast as possible,
−
the controllers are frozen,
−
the speed ramp output is updated from the measured speed and
−
A111 MainsLowVolt [AlarmWord1 (9.06) bit 10] is set as long as the mains voltage recovers before
PowrDownTime (30.24) is elapsed, otherwise F512 MainsLowVolt [FaultWord1 (9.01) bit 11] is
generated.
Note
s:
−
UNetMin2 (30.23) is not monitored, unless the mains voltage drops below UNetMin1 (30.22) first. Thus for
a proper function of the mains undervoltage monitoring UNetMin1 (30.22) has to be larger than UNetMin2
(30.23).
−
In case the On command [UsedMCW (7.04) bit 0] is given and the measured mains voltage is too low for
more than 500 ms A111 MainsLowVolt [AlarmWord1 (9.06) bit 10] is set. It the problem persist for more
than 10 s F512 MainsLowVolt [FaultWord1 (9.01) bit 11] is generated
.
Int. Scaling: 100 == 1 % Type: I Volatile: N
0
150
80
%
30.23 UNetMin2 (mains voltage minimum 2)
Second (lower) limit for mains undervoltage monitoring in percent of
NomMainsVolt (99.10). If the mains
voltage undershoots
UnetMin2 (30.23) following actions take place:
−
if PwrLossTrip (30.21) = Immediately:
−
the drive trips immediately with F512 MainsLowVolt [FaultWord1 (9.01) bit 11]
−
if PwrLossTrip (30.21) = Delayed:
−
field acknowledge signals are ignored,
−
the firing angle is set to ArmAlphaMax (20.14),
−
single firing pulses are applied in order to extinguish the current as fast as possible,
−
the controllers are frozen
−
the speed ramp output is updated from the measured speed and
−
A111 MainsLowVolt [AlarmWord1 (9.06) bit 10] is set as long as the mains voltage recovers before
PowrDownTime (30.24) is elapsed, otherwise F512 MainsLowVolt [FaultWord1 (9.01) bit 11] is
generated.
Note
s:
−
UNetMin2 (30.23) is not monitored, unless the mains voltage drops below UNetMin1 (30.22) first. Thus for
a proper function of the mains undervoltage monitoring UNetMin1 (30.22) has to be larger than UNetMin2
(30.23).
−
In case the On command [UsedMCW (7.04) bit 0] is given and the measured mains voltage is too low for
more than 500 ms A111 MainsLowVolt [AlarmWord1 (9.06) bit 10] is set. It the problem persist for more
than 10 s F512 MainsLowVolt [FaultWord1 (9.01) bit 11] is generated
.
Int. Scaling: 100 == 1 % Type: I Volatile: N
0
150
60
%
30.24 PowrDownTime (power down time)
The mains voltage must recover (over both limits) within
PowrDownTime (30.24). Otherwise F512
MainsLowVolt
[FaultWord1 (9.01) bit 11] will be generated.
Int. Scaling: 1 == 1 ms Type: I Volatile: N
0
64000
500
ms
30.25 - 30.26 Unused
Overview local and communication loss:
Device
Loss control
Time out
Related fault
Related alarm