Off/Braking Functions - Siemens SINAMICS G120 Operating Instructions Manual

Table 8-25
Parameter
P1140 BI: RFG enable
P1141 BI: RFG start
P1142 BI: RFG enable setpoint
Note
The maximum frequency of the setpoint channel is set using parameter P1080.
In V/f mode the maximum frequency is 650 Hz.
In vector mode the maximum frequency is 200 Hz (r1084).
8.13.3

OFF/braking functions

Data
Parameter range:
Warnings:
Faults:
Function chart number:
Description
The inverter and the user must respond to an extremely wide range of situations and stop
the inverter. In this case, both requirements relating to operations as well as the inverter
protective functions (for example, electrical and thermal overload) and man-machine
protective functions have to be taken into account. As a result of the different OFF/braking
functions (OFF1, OFF2, OFF3) the SINAMICS G120 can flexibly respond to the
requirements mentioned above.
OFF1
The OFF1 command is closely coupled to the ON command. When the ON command is
withdrawn, then OFF1 is directly activated. The motor is braked by OFF1 with the ramp-
down time P1121. If the output frequency falls below the parameter value P2167 and if the
time in P2168 has expired, then the inverter pulses are cancelled.
Control Units CU240S
Operating Instructions, 11/2006, A5E00766042B AA
BICO parameters for ramp-function generator
Description
The ramp-function generator output is set to 0 if the binary signal
= 0.
The ramp-function generator output keeps its actual value if the
binary signal = 0.
If the binary signal = 0, then the ramp-function generator input is
set to 0 and the output is reduced to 0 through the ramp-function
generator ramp.
P1121, P1135, P2167, P2168
P0840 ... P0849
r0052 bit 02
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-
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Functions
8.13 Setpoint channel
8-63