DHP-UM-020
Val Controls A/S
•
Limfjordsvej 3
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DK-6715 Esbjerg N
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Tel. +45 7547 0600
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Fax +45 7547 0611
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www.valcontrols.com
Revision: 12
21/38
Advanced menu
Default
Reset Description
4 Control Parameters
Control parameters for the regulator
1 Hysteresis
0.5%
A
Hysteresis around the dead band
2 Pos. ADC 1st end
0
A
ADC value of first endpoint
3 Pos. ADC 2nd end
65535
A
ADC value of second endpoint
4 Open on-time
100
A
On-time when pulsing towards open
5 Open off-time
100
A
Off-time when pulsing towards open
6 Close on-time
100
A
On-time when pulsing towards close
7 Close off-time
100
A
Off-time when pulsing towards close
8 Pulse open dist.
2%
A
The distance before the SP where the regulator is pulsing
9 Pulse close dist.
2%
A
The distance before the SP where the regulator is pulsing
5 Reset
Resetting of positioner
1 Basic reset
Resets all marked with B
2 Advanced reset
Resets all marked with A
Manual control
In manual control it is possible to control the positioner manually in 4 different modes:
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Set point: The set point can be set and changed in different steps (1%, 10% and 25%).
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Useful if it is not possible no control loop is connected or the control loop signal cannot be
controlled.
•
Actuator: The actuator can be opened and closed using the buttons. When no button is
pressed is the positioner in stay put mode.
•
Useful to check whether open and close are set correctly and to check if the system can hold
the position in stay put mode.
•
Actuator pulse: Similar to the Actuator function except that the positioner is pulsing.
•
Control valves: Valve 1 and Valve 2 output can be controlled individually. Useful to find the
right settings for open, close and stay put of the control valves.
Signal calibration
In this menu is it possible to calibrate the analogue in- and out-puts.
Configuration
In configuration the user can change the setup of the positioner.
•
Valve function: Configures how the valves operate during
o
Open
o
Close
o
Stay-put
o
Fail position: Only applicable for outputs which are used for open, close and stay-put
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Position feedback: Configures which input that is used for position feedback, either a
position sensor or a position loop.
•
End position indicator: Lights an indicator when the actuator is at 0% or 100%. This
function has an adjustable deadband.
•
Off/local selector: These inputs can be used to set the positioner in off or local mode
o
Off: The valve will go to the fail position and the pump is off
o
Local: The system is in manual and can be controlled using open and close buttons,
defined under manual valve control.
o
Remote (Default): The system is controlled by control loop or communication
protocol.
