C.M.C. n.v. - Airmaster S1 installation guide – V1.2 – MANY0402A.00
Connector X01
Pin Name Function
1 SUPPLY Supply input: AC
2 SUPPLY Supply input: AC
min typ max. dim
AC input voltage
AC input voltage 19.2 24 28.8 Vac
AC input frequency 50 60 Hz
Recommended 24Vac transformer 24 500 VA
Dropout at input 10 ms
General
The selection of the transformer must be in accordance with the applicable national and
international standards and regulations. Changes in time to these standards are always
possible. In case of doubt please do check them.
Examples:
For the American market (UL)
The selection of the transformer must be in accordance with the transformers
mentioned in the UL508(A) standard. This means that they have to be UL506 or
UL1585 or UL1310 approved (depending on the type).
The transformer or supply must be an UL Listed type or an UL recognized type.
An UL listed device in general does not need additional temperature
measurements for compliance, and is therefore recommended. An UL
recognized transformer needs additional temperature measurements by UL.
- 24Vac supply input:
A control transformer (UL506) in LV/C configuration or a Class 2 transformer
(complying with the requirements of UL 1585) must be used for the 24Vac power
input of the Airmaster S1. A not inherently limited transformer shall be provided
with additional over current protective devices in accordance with the
manufacturer’s instructions for the component.
- Digital outputs with relay contacts
The contacts of the Airmaster S1 relays must only be used in conjunction with a
control circuit transformer (Class 1, UL506), except if a voltage less than 30Vrms
is used with a limited energy rating. In the last case a Class 2 transformer is also
allowed.
The secondary circuit of the control transformer may NOT be grounded; else the
Airmaster S1 controller will be damaged.
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