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Siemens SINAMICS V10 - Selection of the OFF2 Command Source; Inhibiting Negative Set Points of MOP; CO: Frequency Setpoint before RFG; Ramp-Up Time

Siemens SINAMICS V10
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Par. No. Name Range Default Unit
P0844 Selection of the OFF2 command source 0.0 - 2036.F 1.0 -
Note: If P0840 and P0844 are wired together by the same input (i.e. P701 = 99; P0840 = 722.0; P0844 = 722.0), then the
input will act as the ON/OFF2 function. OFF2 has a priority to OFF1.
P1032 Inhibiting negative set points of MOP 0 - 1 1 -
Possible settings:
0 Negative MOP set point allowed
1 Negative MOP set point inhibited
Note:
The reversing functions are not affected by the settings of P1032, which only restrict an MOP setpoint. Please
use P1110 to fully prevent any change of direction in a setpoint channel.
Setting P1110 to 1 will set P1032 to 1 automatically.
Setting P1032 to 1 will reset the saved negative MOP value (if P1040 < 0.0) to 0.0 automatically.
r1119 CO: Frequency setpoint before RFG -- -- Hz
Displays output frequency after modification by other functions, e.g.:
P1110 BI: Inhibit neg. frequency setpoint.
P1091 skip frequencies.
P1082 Min frequency.
P1082 Max. frequency.
Limitations
Etc.
P1120 Ramp-up time 0.00 - 300.00 30.00 s
Time taken for motor to accelerate from standstill up to maximum motor frequency (P1082) when no rounding
is used.
Note :
Setting the ramp-up time too short can cause the inverter to trip (overcurrent).
If an example frequency setpiont with set ramp rates is used (e.g. from a PLC), the best way to achieve
optimum inverter performance is to set ramp times in P1120 and P1121 slightly shorter than those of the
PLC.
P1121 Ramp-down time 0.00 - 300.00 30.00 s
Time taken for motor to decelerate from maximum motor frequency (P1082) down to standstill when no
rounding is used.
P1130 Ramp-up initial rounding time 0.00 - 40.00 0.00 s
Defines initial rounding time in seconds as shown on the diagram below.
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GRZQ
Parameter list
SINAMICS V10
96 Operating Instructions, 08/2011, A5E03453178 (this is not an order number)

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