A4
US
US
A4
US
A4
US
A4
6
2
5
6
4
6
1
2
4
5
3
6
4
1
2
general Information
1 encoder Technology
The CMA utilizes absolute encoder technology where a
unique digital code corresponds to the angular position
(CMQ), stroke length (CML) or rotary (CMR) position of the
actuator.
To achieve high resolution, the position sensor location
eliminates any backlash effect in the gearing. The sensor is
a 12-bit rotary magnetic encoder, fitted at the output gear
stages, removing any internal backlash effect that may exist in
the drive train.
2 user Interface
The CMA LCD display is a 6-character, single line display.
Two graphic symbols are provided for notification of alarm
conditions. The menu style is an intuitive common tree
structure similar in function to the menu system used on PCs.
Two relays can be programmed to close upon reaching a
desired position or any other available fault condition among
the programmable options.
3 dC brushless Motor
The CMA uses a high efficiency, continuous rated, brushless
DC motor. This allows maintenance-free operation even with
continuous unrestricted modulation duty.
4 hand drive
A hand drive mechanism is provided as standard for all CMA
actuators to allow manual operation of the valve. Pressing
down on the hand-knob shaft allows it to engage a gear
in the upper section of the drive train. Releasing causes the
spring to disengage the gear.
5 geartrain
The simple yet durable high efficiency spur gear drive is
lubricated for life. It has proven high reliability.
The CML and CMQ standard build is capable of resisting any
back drive from the load, up to 125% of the rated thrust or
torque of the actuator.
6 output drive
The CMQ base conforms to MSS SP-101 or ISO5211.
The CMR and CML may be adapted to suit individual valves.
CML
Linear Actuator
CMQ
Quarter-Turn Actuator
CMR
Rotary Actuator
Advanced engineering
