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Product Description
MD15-C, MD15-HR, MD15-DA
3.09-20.115-01-EN | 2019-08-12
Q
Commissioning
Valve Functions
The valve functions are adjusted with switches (A) 1 to 6 under the connection cover.
Function
with switch position ON
Switch (A)
Function
with switch position OFF
Reinitialization ON->OFF/OFF ->ON
Reinitialization ON->OFF/OFF ->ON
No function
No function
No function
No function
Actuating direction and position feed-
back 100..0%
Actuating direction and position feed-
back 0..100%
DC 2..10 V
DC 0..10 V
Valve exercise on
Valve exercise off
Switch 1:
Valve exercise
If plant specifications permit, the valve exercise feature may be acti-
vated during commissioning.
Valve exercise prevents the cone from jamming when the valve is not
moved for a long period of inactivity, e.g. for heating systems during the
summer.
If valve exercise is activated, the valve cone is raised for a few seconds
when there is no movement for 21 days.
Default setting
: off
Switch 2:
sets the control range for the continuous actuating signal to
DC 0..10 V or DC 2..10 V
Default setting
: DC 0..10 V
Switch 3:
sets the actuating direction and position feedback for a con-
trol voltage of DC 10 V to “valve open”
or “valve closed”
.
Default setting:
0..100%; “valve open”
Switch 6:
Reinitialization
When the unit is remounted, you must adapt the valves again by per-
forming a reinitialization.
You can do this by moving switch 6 from “OFF” to “ON” or from “ON” to
“OFF”.
The LED (under the connection cover) flashes during initialization.
2
1
3
4
5
6
ON
A
