Alarms actions
When an alarm is raised, the Clean Power VFD changes the state of both the motor control and the relay outputs.
When a fault is cleared and its related alarm removed, the Clean Power VFD will operate in accordance with the table (above).
Some of the actions are configured by the user, while some are fixed and may not be changed.
The 3 actions are
Stop/Start the motor,
Change motor speed,
and Lockout.
The Clean Power VFD changes the state of its output relays in response to an alarm.
The user chooses which relay will receive the alarm and whether the relay will be energized or de-energized in response to an alarm.
By default, relay 1 is assigned to alarms and de-energizes in response to an alarm.
When the “de-energize on fault “ setting is selected, this output relay also de-energizes if the control board is not powered. This allows the Clean Power VFD to issue an alarm if the control board is not operating due to a power issue.
Stop/ start the motor.⚓
The motor stops as soon as an alarm is raised.
The user may configure whether the stop is coasting or with a deceleration ramp. (The default setting is deceleration ramp.)
If the Clean Power VFD is not in a lockout state and the alarms have been cleared, the motor will restart after the delay-restart time has elapsed.
Delay-restart is configurable and the default is set to 60s.
Change motor speed.⚓
The user can choose to reduce motor speed to a user-defined speed setpoint when an alarm is triggered.
When the alarm disappears the Clean Power VFD resumes normal operating speed.
Lockout⚓
If a critical alarm occurs, the Clean Power VFD goes into a lockout state.
The motor can only be restarted once the fault is cleared and the user performs a complete system reset.