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10
IQ3 Full Configuration Manual – Section: Settings
7/15
Set Open Limit
Limits must only be set when the actuator is coupled to the
valve.
The minimum number of output turns between set Open and
Closed Limits is 2.5. An Open Limit position cannot be set if
the actuator is at a set Closed Limit position or within 2.5 turns
of a Closed Limit position. Should a condition arise where this
occurs, for example where an actuator at its Open Limit position
is coupled to a valve at its closed position, refer to 2.6 Defaults
- Limits.
If the actuator was delivered complete with valve, the
valvemaker should have set the Closed and Open limit
positions, refer to testing below.
The Open Limit position must be set by moving the actuator to
the valve Open Limit position and pressing
.
The actuator will display the following Instruction:
Move the actuator and valve to the open position. Allow for
overrun by winding closed by ½ to 1 output turn.
Press to select OK.
The Open Limit will be set at the current valve position. If not
previously illuminated, the open indication LED (default red, refer
to 2.2.2) will be turned on.
Testing:
The limit position can be confirmed by closing the
actuator until the indication LED changes colour and then
moving open until the Open Limit indication LED is turned on at
the set Open Limit position.
8/15
Turns
Shows the actuator output turns between the set Closed and
Open Limit positions.
9/15
Position (non-editable)
Shows the actuator current position on 0-100%.
10/15
Speed (IQT only)
The default speed for a standard IQT is 100% (rated) or 50% for
IQTM. Speed can be adjusted to suit operation/process needs.
To change,
. The slider will indicate the current
set speed.
Torque Limit Bypass
The default setting for opening and closing torque limit bypass is
Off (torque protection active at all times). Bypassing the torque
protection allows torque up to approximately 150% of rated to
be available.
The valve maker or integrator should be consulted to
confirm the valve structure and interface components can
withstand the additional torque/thrust.
11/15
Opening
Opening torque limit protection can be bypassed over a portion
of the opening stroke, refer to 12/15. When set to On, torque
of up to approximately 150% of rated is available for opening
"sticky" valves.
To change,
. The checkbox will indicate the set
opening torque limit bypass status.
12/15
Opening Bypass position
When opening torque limit bypass is set to On (refer to
11/15), the position over the opening stroke where torque
limit protection is bypassed can be set. If torque limit bypass
open is set to Off, the opening bypass position control will be
greyed out.
The available position range over which torque limit protection
is bypassed is 0% (Closed Limit) to 95% open. Outside the set
bypass position, torque switch protection will revert to that set
for 6/15.
To change,
. The slider will indicate the
set position range over which opening torque limit is
bypassed.
13/15
Closing
Closing torque limit protection can be bypassed over a portion of
the closing stroke, refer to 14/15. When set to On, torque of up
to approximately 150% of rated is available for closing the valve.
To change,
. The checkbox will indicate the set
closing torque limit bypass status.
14/15
Closing Bypass position
When closing torque limit bypass is set to On (refer to 13/15), the
position over the closing stroke where torque limit protection is
bypassed can be set. If torque limit bypass closed is set to Off,
the closing bypass position control will be greyed out.
The available position range over which torque limit protection
is bypassed is 100% (Open Limit) to 5% open. Outside the set
bypass position, torque switch protection will revert to that set
for 3/15.
To change,
. The slider will indicate the set
position range over which closing torque limit is bypassed.
15/15
Auto Limit Setting
Sets the open and close limits automatically. Then end of travel
for the lower and upper limits is established when 40% torque
has been reached in each direction. The Actuator must be in
Local to complete this function.
2.1 Settings – Limits
continued
Содержание IQ Multi-Turn
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