AUMA ACVExC 01.2 Series User Manual

10.12. Phase failure monitoring
Conditions:
Phase failure monitoring is only valid for connections to 3-phase AC power supplies.
For versions with 1-phase AC or DC, phase failure monitoring is not possible.
Characteristics
The actuator controls monitor phase L2 If phase L2 is missing for a certain time
interval, the actuator controls still can send and receive signals and generate a fault
indication. Since the actuator controls are supplied via phases L1 and L3, the two
phases cannot be monitored. In case L1 or L3 fails, the actuator controls are
inoperable and the actuator stops.
Information
In case of phase L2 loss during motor operation, this does not necessarily lead to
an immediate standstill of the actuator.The reason is that the rotating motor generates
the missing phase itself. This leads, however, to a reduction of the motor output
torque. If the applied torque is sufficient for valve operation, the missing phase L2
is only detected when switching off (e.g. in an end position) and the Phase fault fault
signal is generated as a consequence.
Configuration of tripping time
Required user level: Specialist (4) or higher.
Device configuration M0053
Phase monitoring M0170
Tripping time M0172
Default value: 10.0 s
Setting range: 1.0 – 300.0 s
Information
Faults in supply voltage (e.g. voltage drops) do not generate a fault signal during the
adjustable tripping time.
98
Actuator controls
Monitoring functions ACV 01.2/ACVExC 01.2

AUMA ACVExC 01.2 Series Specifications

General

Brand	AUMA
Model	ACVExC 01.2 Series
Category	Controller
Language	English