Commissioning Basic Functions; Selecting The Stop Mode - Siemens SINAMICS V20 Series Operating Instructions Manual

5.6.2

Commissioning basic functions

5.6.2.1

Selecting the stop mode

Functionality
Both the inverter and the user have to respond to a wide range of situations and stop the
inverter if needed. Thus operating requirements as well as inverter protective functions (e.g.
electrical or thermal overload), or rather man-machine protective functions, have to be taken
into account. Due to the different OFF functions (OFF1, OFF2, OFF3) the inverter can
flexibly respond to the mentioned requirements. Note that after an OFF2 / OFF3 command,
the inverter is in the state "ON inhibit". To switch the motor on again, you need a signal low
→ high of the ON command.
OFF1
The OFF1 command is closely coupled to the ON command. When the ON command is
withdrawn, then OFF1 is directly activated. The inverter 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.
NOTICE
• OFF1 can be entered using a wide range of command sources via BICO parameter
• BICO parameter P0840 is pre-assigned by defining the command source using P0700.
• The ON and the following OFF1 command must have the same source.
• If the ON / OFF1 command is set for more than one digital input, then only the digital
• OFF1 is active low.
• When simultaneously selecting the various OFF commands, the following priority
• OFF1 can be combined with DC current braking or compound braking.
• When the motor holding brake MHB (P1215) is activated, for an OFF1, P2167 and
SINAMICS V20 Inverter
Operating Instructions, 07/2012, A5E03728167
P0840 (BI: ON / OFF1) and P0842 (BI: ON / OFF1 with reversing).
input, that was last set, is valid.
applies: OFF2 (highest priority) – OFF3 – OFF1.
P2168 are not taken into account.
Commissioning
5.6 Function commissioning
61