Third control level (A parameters):
Setting of control parameters
Access to the third control level is granted when selecting the last P-parameter on the second
control level. Continue to press the UP key for approximately 10 seconds until “PA” appears.
Continue to press the UP key and additionally press the DOWN key for about 4 seconds and the
first A-parameter of the third control level is indicated.
With the keys UP and DOWN you can scroll the list in both directions. Pressing the SET key will
give you the value of the respective parameter. By pressing the UP or DOWN key at the same time
the value can be adjusted.
Return to the initial position takes place automatically, if no key is pressed for 60 seconds, or by
simultaneously pressing the UP and DOWN key for approx. 4 seconds.
Para-
meter
Function description
Adjustment range
Standard
setting
Custom
setting
A1
Switch mode contact K1
0: heating contact
1: cooling contact
0
A2
Switch mode contact K2
0: heating contact
1: cooling contact
1
A3
Function of contact K1 at
sensor error
0: relay off
1: relay on
0
A4
Function of contact K2 at
sensor error
0: relay off
1: relay on
0
A5
Selection setpoint 2 or DeltaW 0: operation with setpoint 2
1: operation with DeltaW
1
A6
Control characteristics
contact K1
0: thermostatic
1: PID
1
A7
Control characteristics
contact K2
0: thermostatic
1: PID
0
A8
Display mode
0: both displays without
decimals
1: both displays with decimals
1
A10
Indication value for lower value
linear analogue input
-99...999°C
0°C
A11
Indication value for upper value
linear analogue input
-99...999°C
100°C
A19
Parameter lock
0: no lock
1: A-parameter locked
2: A- and P-parameter locked
0
A20
Minimum action time contact
K1 ”Off”
0…999 sec.
0 sec.
A21
Minimum action time contact
K2 ”Off”
0…999 sec.
0 sec.
A22
Delay after “Power-on”
0…999 sec.
0 sec.
A23
Alarm suppression after
"Power-On"
0…999 min.
0 min.
A30
Function alarm exit
0: Boundary alarm, relative
1: Boundary alarm, absolute
2: Range alarm, relative
3: Range alarm, absolute
0
Summary of Contents for ST48-WHDVM.04
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