Brochure

Wireless Small Actuator - MAC-WSA
4
Tunstall Corporation
118 Exchange Street • Chicopee, MA 01013
© July 2014
We reserve the right to alter designs, specifications and information without notice.
Phone [phone] · Fax [phone]
www.tunstall-inc.com • www.maconcontrols.com
Bulletin-MC-WSA-1014
Electric Operators
Dimensions
Small Actuator Functions
Actuator mode
If an external 0 to 100% EnOcean radiogram is received, the internal loop controller is not active.
The transmitted actuating signal is translated into a positioning movement.
A suitable wireless single room controller takes over the control functions.
Self-controlling operation
The integrated room temperature controller is activated if no external 0 to 100% EnOcean radiogram
is received.
- Without external operator panel (= emergency mode):
The temperature is controlled to a fixed setpoint of 20 °C / 68 °F using the integrated temperature sensor
(actual value) and the integrated control function of the actuator.
- With external operator panel (EnOcean technology):
Using the operator panel, the user can freely determine the setpoint or enter his own schedule.
The actual value and the setpoint are transmitted via the EnOcean radiogram (EEP 07-20-01).
The integrated control algorithm makes room control easy and convenient.
If no external temperature sensor (actual value) is connected, the value of the integrated temperature sensor is
used as the command value for room temperature control, which is not the proper method of operation
(=emergency mode).
Battery monitoring
The battery capacity is continuously monitored. If the battery capacity is too low, this is communicated to the
wireless partner and an acoustic signal sounds every 6 hours. If this message is activated, the remaining
capacity of the batteries is < 10%.
If the battery voltage continues to drop, the actuator assumes the safety position of 50% (= safety position).
Valve block protection
Block protection prevents the cone from jamming when the valve is inactive for a long time. When block
protection is active, the actuator performs a displacement of 50% once every 7 days.