Commissioning
5.6 Function commissioning
SINAMICS V20 Inverter
62
Operating Instructions, 07/2012, A5E03728167
OFF2
The inverter pulses are immediately cancelled by the OFF2 command. Thus the motor
coasts down and it is not possible to stop in a controlled fashion.
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NOTICE
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The OFF2 command can have one or several sources. The command sources are
defined using BICO parameters P0844 (BI: 1. OFF2) and P0845 (BI: 2. OFF2).
•
As a result of the pre-assignment (default setting), the OFF2 command is set to the
BOP. This source is still available even if another command source is defined (e.g.
terminal as command source → P0700 = 2 and OFF2 is selected using DI2 → P0702 =
3).
•
OFF2 is active low.
•
When simultaneously selecting the various OFF commands, the following priority
applies: OFF2 (highest priority) – OFF3 – OFF1.
OFF3
The braking characteristics of OFF3 are identical with those of OFF1 with the exception of
the independent OFF3 ramp-down time P1135. If the output frequency falls below parameter
value P2167 and if the time in P2168 has expired, then the inverter pulses are cancelled as
for the OFF1 command.
OFF3
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