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Series 612
be repeated to attempt target position in the short term. But in the medium term the valve unit requires
cleaning or inspection. 'Service request' (SR) would be indicated on the display or could be read via
remote operation. Refer to «Display information» for details.
5.7
Operation during power up
Valve position
before
power up:
Any
5.8
Behavior in case of power failure
Valve position before
power failure:
Any
5.9
Operation under increased temperature
601894EA
OPERATION
Reaction of valve:
Valve power up configuration = closed
(defaullt)
Valve runs a synchronization cycle (close-open-close) to detect the limit
stops. This cycle is performed with reduced torque (2Nm). Display shows
configuration of product until synchronization cycle is done. Refer also to
chapter «Display information».
Valve position after power up is
closed
Reaction of valve:
Without Power Failure Option (PFO)
612 . . - . . G. - . . . .(No PFO, no SPS)
612 . . - . . A. - . . . .(No PFO, SPS)
Valve remains at current position.
All parameters are stored in a power fail save memory. For PFO retrofit and other
options refer to chapter: «Option board».
Hot valve
Heated valve may result in minor or moderate injury.
Do not touch valve and heating device during operation. Once heating is switched off
(valve and system) await until the valve is cooled down complete before doing any
work.
This valve may be operated in the temperature range mentioned in chapter
«Technical data».
Edition 2013-04-12
Valve power up configuration = open
Valve position after power up is open
CAUTION
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