JUMO 404304 - Page 38

8 Setting the limit contacts
18
Setting the
limit contact
by using a
multimeter
✱ Connect multimeter to connector ST4 (for GK1) or ST5 (for GK2), see table
above.
✱ Set switch-on and switch-off delay to 0 (turn fully to the left) by using the
potentiometer TP3 (for GK1) or TP7 (for GK2) (switch-on delay) and TP4 or
TP8 (switch-off delay).
✱ Set the voltage that corresponds to the switching point by means of the
potentiometer TP1 (for GK1) or TP5 (for GK2).
Example: range 0 to +3 hPa; desired switching point 1.8 hPa => 60% of
range; the corresponding voltage at the connector ST4 or ST5 is 0.6 V
Setting the
switching
hysteresis
by using a
multimeter
✱ Connect multimeter to connector ST4 (for GK1) or ST5 (for GK2), see table
above.
✱ Set switch-on delay and switch-off delay to 0 (turn fully to the left) by using
the potentiometer TP3 (for GK1) or TP7 (for GK2) (switch-on delay) and TP4
or TP8 (switch-off delay).
✱ Using the potentiometer TP2 (for GK1) or TP6 (for GK2), set the voltage that
corresponds to the hysteresis.
Example: switching point at 0.5 V; desired hysteresis 10%; corresponding
voltage at the connector ST4 or ST5 is 0.45 V
Setting the
switch-on or
switch-off delay
✱ Set the switch-on delay using the potentiometer TP3 for GK1 or TP6 for
GK2 within the range 0 to 10 sec.
✱ Set the switch-off delay with the potentiometer TP4 for GK1 or TP8 for GK2
within the range 0 to 10 sec.
The range 0—100% always corresponds to 0—1 V.
e.g.: pressure range 0 to +3 hPa corresponds to 0—1 V
pressure range -3 to +3 hPa corresponds to
-0.5 to +0.5 V
pressure range -2 to +8 hPa corresponds to
-0.2 to +0.8 V