Device safety
Safety for the devices is ensured by (among other aspects):
Supply of AC 24 V/DC 24…48 V extra-low voltage as per SELV or PELV.
Double isolation between AC 230 V mains voltage and SELV/PELV circuits.
Mechanical parallel connection of actuators
Two-position and three-position actuators GMA32..1, GMA12..1, and GMA13..1:
Mount max. two actuators on the same damper shaft.Use the mounting bracket to secure the second actuator also (see accessories in chapter 2.2).
Do not mechanically connect modulating GMA16..1 actuators.
Auxiliary switches A, B
Apply only mains voltage or only safety extra-low voltage to the switching outputs of auxiliary switches A and B. Mixed operation is not permissible. However, operation using various phases is not permissible.
Feedback potentiometer for position indication
Include the potentiometer's electric data to indicate the damper position via external switching.
Electrical parallel connection of actuators
Up to 10 actuators of the same device type can be electrical parallel wired. Cable length and cable cross section have to be respected.
See chapter 6 “wiring notes” for more information.
Caution
Maintenance
Do not open the actuator!
The device is maintenance-free. Only the manufacturer may conduct any repair work.