Search FAQs

What is Command Switching on the ATV61/71 or Process Drives?

Issue:
ATV61/71 or ATV630/930 command switching.

Product Line:
Altivar 61, Altivar 71, Altivar Process

Environment:
All serial numbers

Cause:
N/A

Resolution:
When profile on the ATV61/71 or ATV630/930 VFDs is programmed to Separate or IO profile, the speed reference and the start/stop command can come from different channels.
Command switching allows the VFD to switch between Command Channel 1 and Command Channel 2

The parameter can be accessed if [Profile] (CHCF) = [Separate] (SEP) or [I/O profile] (IO)
[Cmd switching] [ch1 active] (Cd1)
Cd1 [ch1 active] (Cd1): [Cmd channel 1] (Cd1) active (no switching)
Cd2 ch2 active] (Cd2): [Cmd channel 2] (Cd2) active (no switching)

[LI1] (LI1)
to
: [LI6] (LI6)

[...] (...): See the assignment conditions in Programming manual (not CDOO to CD14).
If the assigned input or bit is at 0, channel [Cmd channel 1] (Cd1) is active.
If the assigned input or bit is at 1, channel [Cmd channel 2] (Cd2) is active.