Need help?Do you have a question about the ABB OTM C 21D and is the answer not in the manual?
Explains automatic transfer sequences: Line 1 priority, No line priority, Manual return.
Details how to enable and use the automatic transfer modes.
Covers Modbus parameters, functional codes, register info, and cyber security.
Guides on setting transfer delays and voltage thresholds using rotary switches.
Explains how to configure operating modes using the 9-bit dip switch.
Lists common faults, their analysis, and troubleshooting methods.
To Next Page
General
