Brochure

Wireless Small Actuator - MAC-WSA
8
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
General Information
■ The actuator operates in a 10-minute communication cycle (except for summer bit = active; the cycle is 30 minutes in
this case). There is no communication with the wireless partner on an automatic basis between these cycles.
A connection can be established manually through a communication check triggered on the actuator (e.g. for checking
the wireless path during commissioning). A complete data transfer does not occur when a communication check is
manually triggered. The data relevant to the control technology is not updated.
A new calculation of the control deviation and an associated repositioning of the valve occurs every 10 min. after the
data exchange with the wireless partner.
■ If the “summer bit” is transferred from the wireless partner, the communication cycle is extended from 10 minutes to
30 minutes. This reduces the energy consumption during phases in which no heating occurs and has a positive effect on
the service life of the batteries.
The function must be supported by an external wireless partner and can be optionally set.
■ The external wireless partner determines when summer mode is active.
This operating mode is active, for example, during the period in which no heating occurs (i.e., the primary power sup-
ply for heating is switched off).
■ The batteries are dimensioned so that approx. 5,500 actuating cycles of 15 s each are possible. Avoiding an oscillating
control circuit thus depends greatly on how the settings of the loop controller parameters (for external loop controllers)
were selected.
We recommend that the external loop controller be set to have as long a time delay as possible.