Siemens SED2 VFD Electronic Bypass Option 125-3208 - Manual (Page 42)

SED2 VFD Electronic Bypass Option Operating Instructions
34 Siemens Building Technologies, Inc.
Automatic Restart Continued
Parameter Description Action
Setting/
Default
P1210
(Continued) P1210 = 4, Restart after supply power
brownout (P1211 disabled):
For these settings it is fundamental that
the drive only restarts if it has been in a
RUN state at the time of the fault
(F0003). The inverter will acknowledge
the fault and will restart the drive after a
blackout or brownwout. It is necessary
that the ON command is wired via
digital input (DIN).
P1210 = 5, Restart after blackout or fault
(P1211 disabled):
The inverter will acknowledge the faults
(F0003 etc.) at power on after blackout
and will restart the drive. It is necessary
that the ON command is wired via digital
input (DIN).
P1210 = 6, Restart after supply power
brown/blackout or fault (P1211 disabled):
The inverter will acknowledge the faults
(F0003 etc.) at power on after blackout or
brownout and will restart the drive. It is
necessary that the ON command is wired
via digital input (DIN). Setting 6 causes
the motor to restart immediately.
P1210 = 7, Restart after supply power
brown/blackout or fault (P1211
enabled):
This setting is for use where an external
bypass system or process is interlocked
with a relay that is set to
P0731/P0732=52.3 (fault). The inverter
functions the same as P1210=6 (trip on
brownout, blackout or fault) but uses
P1211 and only sets the fault bit
P0731/P0732=52.3 when the specified
number of restarts defined in P1211 has
expired. If no trip occurs after 2 hours,
the fault counter is reset.
NOTES:
1. Auto restart requires a constant ON command (such as via a digital input).
2. P1200 flying start must be used in cases where the motor may still be turning, such as after a brief input power
break, or can be driven by the load.
3. A supply power brownout is when the power is interrupted and reapplied before the operator panel display has
gone dark. It is a very short supply power break where the DC link has not fully collapsed.
4. A supply power blackout is when the operator panel display has gone dark before the power is reapplied.
It is a long supply power break where the DC link has fully collapsed.