Operating Instructions

SED2 VFD Operation & Maintenance Manual
148 Siemens Building Technologies, Inc.
Note: Value set here is valid both for clockwise and for anticlockwise rotation.
Under certain conditions (for example, ramping, current limiting), motor can run below minimum frequency.
P1082 Max. Frequency
Min: 0.00 Def: 50.00 Max: 650.00
Level 1
Dependency: Limited internally to 200 Hz or 5 * rated motor frequency (P0305) when P1300 >= 20 (control mode=vector
control). The value is displayed in r0209 (maximum frequency).
Note: The value set here is valid for both clockwise and counterclockwise rotation.
The maximum output frequency of inverter can be exceeded if one of the following is active:
Slip compensation=f
max
+ f
slip comp max
, or
Flying restart=f
max
+ f
slip nom
Maximum motor speed is subject to mechanical limitations.
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.