Technical data

SED2 Operation and Maintenance Manual
114 Siemens Building Technologies, Inc
P1091 – P1094 Skip frequency 1 through 4
Min: 0.00 Def: 0.00 Max: 650.00
Level 3
Details:
Defines the skip frequency which avoids effects of mechanical resonance and suppresses frequencies within +/- P1101
(skip frequency bandwidth).
P1091 defines skip frequency 1, P1092 defines skip frequency 2, P1093 defines skip frequency 3, and P1094 defines skip
frequency 4.
Note:
Stationary operation is not possible within the suppressed frequency range; the range is merely passed through (on the
ramp). For example, if P1091=10 Hz and P1101=2 Hz, it is not possible to operate continuously between 10 Hz +/- 2 Hz
(that is, between 8 and 12 Hz)
P1101 Skip frequency bandwidth
Min: 0.00 Def: 2.00 Max: 10.00
Level 3
Details:
Delivers frequency bandwidth to be applied to skip frequencies (in [Hz]).
Note:
See P1091 through P1094 (skip frequencies 1 through 4).
P1110[2] BI: Inhibit neg. freq. Setpoint
Min: 0:0 Def: 0:0 Max: 4000:0
Level 3
Details:
Inhibits direction reversal, thus preventing a negative setpoint from causing motor from running in reverse. Instead, it will
run at minimum frequency (P1080) in the normal direction
Settings:
0=Disabled 1=Enabled
Index:
P1110[0] : IN000 (AUTO) 1st. Command data set (CDS) P1110[1] : IN001 (HAND) 2nd. Command data set (CDS)
Note:
It is possible to disable all reverse commands (that is, the command is ignored). To do this, set P0719=0 (remote selection
of command/setpoint source) and define the command sources (P1113) individually.
This function does not disable the "reverse" command function; rather, a reverse command causes motor to run in the
normal direction as described above.
P1120 Ramp-up time
Min: 0.00 Def: 10.00 Max: 650.00
Level 1
Details:
Setting the ramp-up time too short can cause the inverter to trip (overcurrent).
If an external frequency setpoint with set ramp rates is used (for example, from a PLC), the best way to achieve optimum
drive performance is to set ramp times in P1120 and P1121 slightly shorter than those of the PLC.
P1121 Ramp-down time
Min: 0.00 Def: 10.00 Max: 650.00
Level 1
Details:
Setting the ramp-down time too short can cause the inverter to trip (overcurrent (F0001)/overvoltage (F0002)).
P1135 OFF3 ramp-down time
Min: 0.00 Def: 5.00 Max: 650.00
Level 2
Details:
Defines ramp-down time from maximum frequency to standstill for OFF3 command.
Note:
This time may be exceeded if the VDC_max. level is reached.
P1140[2] BI: RFG enable
Min: 0.00 Def: 1.0 Max: 4000.0
Level 3
Index:
P1140[0]: IN000 (AUTO) 1st command data set (CDS) P1140[1]: IN001 (HAND) 2nd command data set (CDS)
P1141[2] BI: RFG start
Min: 0.00 Def: 1.0 Max: 4000.0
Level 3
Index:
P1141[0]: IN000 (AUTO) 1st command data set (CDS) P1141[1]: IN001 (HAND) 2nd command data set (CDS)
P1142[2] BI: RFG setpoint
Min: 0.00 Def: 1.0 Max: 4000.0
Level 3
Index:
P1142[0]: IN000 (AUTO) 1st command data set (CDS) P1142[1]: IN001 (HAND) 2nd command data set (CDS)
P1200 Flying start
Min: 0 Def: 0 Max: 6
Level 2
Details:
Starts inverter onto a spinning motor by rapidly changing the output frequency of the inverter until the actual motor speed
has been found. Then, the motor runs up to setpoint using the normal ramp time.
Enum:
0 =Flying start disabled
1 =Flying start is always active, start in direction of setpoint
2 =Flying start is active if power on, fault, OFF2, start in
direction of setpoint
3 =Flying start is active if fault, OFF2, start in direction of
setpoint
4 =Flying start is always active, only in direction of setpoint
5 =Flying start is active if power on, fault, OFF2, only in
direction of setpoint
6 =Flying start is active if fault, OFF2, only in direction of
setpoint
Note:
Useful for motors with high inertia loads.
Settings 1 to 3 search in both directions.
Settings 4 to 6 search only in direction of setpoint.
Flying start must be used in cases where the motor may still be turning (for example, after a short mains break) or can be
driven by the load. Otherwise, overcurrent trips will occur
P1202 Motor-current: Flying start