Siemens SED2 series Operating Instructions Manual page 91

P1091 to Skip frequency 1 through 4
P1094
Defines skip frequency 1 which avoids effects of mechanical resonance and suppresses
frequencies within +/- P1101 (skip frequency bandwidth).
Unit: Hz Min: 0.00
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 (i.e.
between 8 and 12 Hz)
P1101 Skip frequency bandwidth
Delivers frequency bandwidth to be applied to skip frequencies (in [Hz]).
Unit: Hz Min: 0.00
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
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.
Unit: - Min: 0:0
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
Index: P1110[0] : 1st command data set (CDS)
Note: It is possible to disable all reverse commands (i.e. 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
Time taken for motor to accelerate from standstill up to maximum motor frequency (P1082)
when no rounding is used.
Unit: s Min: 0.00
Details: Setting the ramp-up time too short can cause the variable speed drive to trip (overcurrent).
If an external frequency setpoint with set ramp rates is used (e.g. 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
Time taken for motor to decelerate from maximum motor frequency (P1082) down to standstill
when no rounding is used.
Unit: s Min: 0.00
Details: Setting the ramp-down time too short can cause the variable speed drive to trip (overcurrent (F0001) / overvoltage (F0002)).
P1135 OFF3 ramp-down time
Defines ramp-down time from maximum frequency to standstill for OFF3 command.
Unit: s Min: 0.00
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
Defines command source of RFG enable command (RFG: ramp function generator).
Unit: - Min: 0.00
Index: . P1140[0] : 1st command data set (CDS)
P1140[1] : 2nd command data set (CDS)
P1141[2] BI: RFG start
Defines command source of RFG start command (RFG: ramp function generator).
Unit: - Min: 0.00
Index: . P1141[0] : 1st command data set (CDS)
P1141[1] : 2nd command data set (CDS)
P1142[2] BI: RFG enable setpoint
Defines command source of RFG enable setpoint command (RFG: ramp function generator).
Unit: - Min: 0.00
Index: . P1142[0] : 1st command data set (CDS)
P1142[1] : 2nd command data set (CDS)
P1200 Flying start
Starts variable speed drive onto a spinning motor by rapidly changing the output frequency of
the variable speed drive until the actual motor speed has been found. Then, the motor runs up
to setpoint using the normal ramp time.
Unit: - Min: 0
Details: Starts variable speed drive onto a spinning motor by rapidly changing the output frequency of the variable speed drive
until the actual motor speed has been found. Then, the motor runs up to setpoint using the normal ramp time.
Siemens Building Technologies
HVAC Products
Def: 0.00
Def: 2.00
Def: 1:0
Def: 10.00
Def: 30.00
Def: 5.00
Def: 1.0
Def: 1.0
Def: 1.0
Def: 0
SED2 variable speed drives
Programming
Max: 650.00
Max: 10.00
Max: 4000:0
1=Enabled
P1110[1] : 2nd command data set (CDS)
Max: 650.00
Max: 650.00
Max: 650.00
Max: 4000.0
Max: 4000.0
Max: 4000.0
Max: 6
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CM1U5192en
01.2002