Bernard Controls MINIGRAL+ Anleitung Seite 10

2.2 MINIGRAL+ CONFIGURATION
Two switches located on the printed circuit board are used to select the "on-off" mode:
- Switches 5 and 6 positioned on B
The switch 7 allows to set the direction of rotation :
- Switch 7 in A position: closing in clockwise direction.
- Switch 7 in B position: closing in counter clockwise direction.
2.3 SETTING OF OPEN AND CLOSED POSITIONS
Please follow the instructions given in the "Setting of mechanical stops and travel limit switches"
paragraph of the SD range instructions for start-up (ref.TMS300SD) delivered together with
the actuator. The cams to be adjusted are the black and the white one.
2.4 REMOTE POSITION SIGNAL (OPTIONAL)
An optional potentiometer is available to get a position feedback. The potentiometer signal
is delivered between the terminals 71 and 72. The type of output signal is configurable :
Output Signal
0 to 10V
2 to 10V
4 to 20mA
0 to 20mA
Please note : Output signal doesn't need external voltage.
Drive the actuator carefully to the closed position.
Connect a milliamperemeter or a millivoltmeter on terminals 71,72.
With a screwdriver, adjust the potentiometer until reading 4mA (4-20mA signal),
0mA (0-20mA signal) or 0V (0-10V signal).
Start an actuator opening and check that the signal current/voltage increases.
Drive the actuator carefully to the open position.
Connect a milliamperemeter or a millivoltmeter on terminals 71,72.
With a screwdriver, adjust the potentiometer until reading 20mA (0-20mA and 4-20mA signal) or
10V (0-10V signal).
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2.2.1 SELECTION OF ON-OFF OPERATION
2.2.2 MOTOR DIRECTION OF ROTATION
Switches position
3 4
B B
B A
A A
A B
2.4.1 SETTING OF CLOSED POSITION (0%)
2.4.2 SETTING OF OPEN POSITION (100%)
Position signal specification
Signal
0-20mA <300ohm
4-20mA <300ohm
0-10V >5kohm
Feedback potentiometer setting
Load