VPI Pressure Independent Control Valves & Actuators
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Auto-stroke sequence for DN 50- 250
In case the valve does not operate as expected, start the auto-stroke sequence to re-calibrate the closing point making
sure that the actuator is able to open the valve fully. Press
and
simultaneously for 6 seconds to start auto-stroke.
An auto-stroke sequence cannot be cancelled. During auto-stroke actuator display will show “AUTO STROKE CYCLES”.
Hereafter it will proceed to normal operation mode (according to control signal). If the actuator is not able to open valve
fully, error code 01 will be displayed.
Manual Override
Manual override is used to temporarily set the valve position regardless the settings and control signal for the actuator.
Disconnect power to the actuator and remove the actuator from the valve. Turn the valve spindle clockwise to close
valve and counterclockwise to open. Re-mount the actuator and connect power. Be aware to protect that actuator from
water while not on the valve.
NOTE: When manually operating the vale (actuator disconnected) do not use more than 10 Nm torque. Use of higher
torque will void warranty.
Failsafe Mode for DN 50- 250
In case of power failure, failsafe models will move actuator to the position chosen in programming menu step 13 and
show warning code 05 in the actuator display. When voltage is back in range will be reset.
OPERATION & CHECKOUT
Once both the mechanical and electrical installations are complete:
1. Power On the system with precautionary measures and cycle the actuator to verify if it’s working as per set
parameters and as per intended application.
2. If the actuator output is incorrect, contact the Honeywell local representative.
3. If the control scheme requires fail-safe operation, ensure that, upon removal of power, the fail position coincides
with the control sequence.
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