The base version is an intelligent actuator with hardwired (i.e. point to point) connection.
High  profile  standards:  all  the major  features  have  been included
in  the base  version.
Automatic  phase  correction
The valve will be protected as the system automatically recognises and corrects phases
preventing any unforeseen error in rotation sense.
Phase  failure  correction
In case of loss of one of the phases, this features prevents the motor from overheating. The minimum
time to set the alarm on is 100 ms, in order to prevent the system from being influenced by casual
oscillations. In case of loss of one phase during motor running, the actuator will reach
the end-of-travel position before setting the alarm condition and de-energising the actuator.
Motor  thermostat
If during operation the temperature of the motor overrides the security limits, a thermostat
will set the alarm condition and the command signal will be inhibited.
Jammed  valve  protection
If, after a command (close/open), the valve position does not change within a pre-set time,
an alarm condition is set and the command signal will be inhibited.
The pre-set time can be any time within the interval 2 to 100 seconds.
Anti- hammer  protection
This feature will protect both the motor and the valve. If a torque limit is reached it will
prevent the valve from moving in the same direction which has caused the torque limit.
Instantaneous  reversal   protection
When the actuator is operating in one direction and an immediate command for a reverse
direction is set, unpredicted current surges arise with possible damages to the motor.
To prevent such problems, a delay between the opposite commands can be programmed
from 500 ms to 5 seconds.
Warnings
Warning signals become active when the operating conditions are close to a critical alarm level.
Warning is displayed but operation is not interrupted.
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Local  operator  interface
The local interface has been designed to be easily operated and
to have a complete and clear set of information available.
It is composed of
- a padlockable three-position selector for LOCAL/OFF/REMOTE operation selection
- Three pushbuttons for both local OPEN/CLOSE/STOP controls and menu navigation
All buttons are recessed for protection from accidents or misuse.
Through the local interface the field operator can enter a basic configuration menu
which allows to set the following parameters:
Base parameters
- End of travel position in opening/closing
- Opening/closing torque values
- Position/torque display
- Opening/closing by torque/position
- Output contacts
- ESD feature
- Remote/Local control feature
Extended parameters
- Timer parameters
- Position servo-amplifier parameters
- Fieldbus interface parameters
- PID parameters
- ….
The configuration menu is password protected.
Three LEDs with settable different colours to indicate valve opening/closing, alarms,
warnings, mid-travel and end-of-the run positons.
Added  extra  features
Predictive   maintenance
Some of the most vital parts of the actuator are monitored:
- contactor cycles count
- torque trend
- alarms data log
Timer  Function  Module (TMR)
It allows for partial or complete timer controlled valve stroke.
Through the local/remote interface the following can be set:
- if it has to be active during opening or closing operation
- ON time, from 1 to 200 sec max, with steps of 1 sec.
- OFF time, from 1 to 200 max, with steps of 1 sec.
- percentage of position when timer starts on opening
- percentage of position when timer starts on closing
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