6.1.3
3-point standard operation
To protect elements such as gears and connecting elements against harmful effects due to
control pulses that are too short ... Max rotary drives are protected through the internal elec-
tronics. The electronic system ignores impulses < 0.5 s. The control signal must be present
for min. 0.5 s. For a directional change, the pause is 1 s.
Additional information for activation in 3-point operation
The direction of rotation for the motor depends on the positions of contacts a and b:
• contact a closed, contact b open = direction I
• contact a and b closed = motor does not turn
• contact b closed, contact a open = direction II
• contact a and b open = motor does not turn.
Example:
24...240 VAC/DC
~
~
–
+
PE
a
b
1
2
3
4
PA
The direction of rotation (I and II) depends on the left/right installation of the rotary drive on
the device. A motorised change to the direction of rotation is done by swapping the con-
necting wires 3 and 4.
6.1.4
Spring-return function
The spring-return function is only activated if the supply network for terminals 1 or 2 is inter-
rupted. In the event of an interruption, thanks to the spring the rotary drive always moves to
its final position, even if the power supply is restored during the reset function. Afterwards
the actuation and standard function is continued.
6 | Operation
Translation of the original installation guide · Version 1.0 · 2021-05-27
211
