ABB ACS800-67, System Description And Start-Up Manual

Page: 113 / 120

Tracing the source of warnings, limits and faults 113
6
Tracing the source of warnings,
limits and faults
What this chapter contains
This chapter describes the warnings, limits and faults of the converter and refers to
descriptions of the warning and fault messages and LEDs given in other manuals.
Warnings
Abnormal statuses are indicated by the warning words and messages.
Limits
The converter control programs limit, for example, current, torque, power, speed and
overvoltage. The performance of the limiters can be controlled by parameters.

Torque limit
The converter calculates shaft torque every 25 microsecond.
Torque is typically limited when
•
the limit defined by parameter 20.05 USER POS TORQ LIM is met
•
some factor in the torque reference chain requires it.

Power limit
Parameters 20.17 P MOTORING LIM and 20.18 P GENERATING LIM define the
maximum allowed power flows.