Burkert Type 3002 - Handbuch (Seite 14)

12 - 3001S / 3002S
english
Preliminary measure
➔ Connect rotary actuator according to the circuit diagram (in cover of
actuator).
3-position actuator
Compared to the 2-position actuator, the 3-position actuator has two additional
microswitches S3 and S4, via which the motor voltage is fed to reach the
intermediate position, and which ends the rotation process by interrupting the
current in the intermediate position.
The tripping cams of both these microswitches are so adjusted that at least
one of the switches is operated at each position of the rotary actuator. This
prevents voltage being supplied to both motor windings of the capacitor motor
while adjusting the centre position by simultaneous closing of the switches,
thereby causing damage to the contacts of the microswitches by the high
currents.
Setting the limit positions
Setting the tripping cam and display plate with fork spanner SW11.
➔ Apply voltage L1 to the motor via S1 and observe direction of rotation of the
tripping cam.
➔ Switch off motor when the desired limit position is reached.
➔ Equalization of the optical position indicator by turning the display plate.
➔ To set the outer limit position, apply voltage L1 to the motor via S2 and
proceed in the same way.
S1 switches motor off
prematurely
S1 doesn't switch yet
Turn tripping cam in the opposite
direction of rotation until desired limit
position can be reached.
Turn tripping cam in same direction, un til S1
just switches off.