Description
The GMA...1 electronic actuators are available for two-position, three-position, modulating and networked control with spring return. The nominal torque is 7 Nm. The actuator's connection cables are prewired.
Housing
Robust, light-weight full metal housing from aluminum diecast. The housing guarantees a long actuator life even under harsh environmental conditions.
Gear train
Maintenance-free and noise-free gear train with stall and overload protection for the life of the actuator.
Spring preload
The spring preload of 5° ensures safe closure of the air dampers following correct mounting.
Manual adjustment
You can manually adjust the actuator using a hex wrench and lock it using a screwdriver.
Self-centering shaft adapter
This mounting type allows for fastening the actuator to shafts with various diameters and in various shapes (square, round) using just one screw.
Insert the shaft adapter from either side into the opening for the shaft adapter.
For short shafts, the shaft adapter is on the duct side.
The shaft adapter coupling and the adapter holding are coupled by means of double-sided gearing.
Mounting bracket
A bolted metal strip is used for attaching the actuator.
Electrical connection
All actuators have pre-wired, 0.9 m long (standard length) connection cables.
Type-specific elements
The actuators can be delivered as a type-specific variant having the following elements:
Auxiliary switch
For supplementary functions, the auxiliary switches A and B can be adjusted on either side.
Potentiometer for offset and span
Both potentiometers for the operating functions Uo and ΔU are accessible on either side.
Feedback potentiometer to position indication
The potentiometer is integrated and can be connected by means of a cable.
Push button and LED
at external Interface
The HMI of networked types consists of a push button and an LED to allow certain interactions with the actuator or to provide visible feedback from the actuator.