Edition 2.0 dated 20/11/2013
A single transformer may be used to supply voltage to more than one controller, but you must ensure
that the planned load is well within the rating of the transformer. The transformer output terminal
designated as AC Neutral must be solidly earthed to the main earth link of the enclosure panel. The
power input terminals are Terminals 1 and 2 and are detailed in Table 3-2 below.
3-3.1.1 Power Input
The MAXIM I, II, III, and 1010 controllers may by powered by either an AC or a DC power source. The
operating voltage must meet the requirements of Safety Extra Low Voltage (SELV) to EN60730. The
transformer used must be a safety transformer in compliance with EN60742 and be designed for
100% duty. It must also be sized and fused in compliance with local safety regulations. Power input
specifications for these controllers are detailed in Table 3-1 below.
Controller AC Power Source DC Power Source
MAXIM I and II
24 VAC ±10%, 50/60 Hz,
Nominal Transformer
rating:
5VA
24 VDC ±10%
Nominal Transformer
rating:
5VA
MAXIM III
24 VAC ±10%, 50/60 Hz,
Nominal Transformer
rating:
10VA
24 VDC ±10%
Nominal Transformer
rating:
10VA
MAXIM 1010
24 VAC ±10%, 50/60 Hz,
Nominal Transformer
rating:
16VA
24 VDC ±10%
Nominal Transformer
rating:
16VA
Table 3-1: MAXIM I, II, III and 1010 Power Source Specifications
Terminal AC Supply DC Supply
1 24VAC 24VDC
2 0VAC (Neutral) 0VDC
Table 3-2: MAXIM I, II, III and 1010 Controller Power Input Terminals
To Next Page
Loading...
