IQT actuators are designed to stop at
the end of travel by torque limitation
against the actuator stop bolts. Stop
bolts should therefore be set to the
precise stopping position required, refer
to section 5.6.
IQTF actuators can be configured to
close on torque or limit. Refer to valve
manufacturers instructions.
Refer to valve manufacturer
for recommended setting. In the
absence of valvemaker instructions
set “Open Limit”.
50
m
50
m
P?
k
PC
k
Ir
k
tP
m
cr
m
c1
k
c2
k
c3
m
tC
k
tO
m
LC
k
LO
m
50
Using the
+
or
-
key display the
required option.
[Ot] in the Setting Field Indicates
Open on Torque - defualt setting.
[OL] in the Setting Field Indicates
Open on Limit.
PRESS THE KEY.
The displayed option will flash (stored),
indicating that it has been set.
PRESS THE
k
KEY.
NOTE:
When set to open on torque,
the actuator will apply the level of
torque as set for [tO] in back seating
the valve (refer to [tO] page 23).
21
Open Action
C3
Torque
Open Action
Open on Limit
Open Action
Open on Torque
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