Innotech Genesis II Digital Controller (v5) - Manual (Page 44)

Genesis II Installation Instructions
Page 44 © Mass Electronics Pty Ltd 2010 Edition 2.0 dated 06/12/2013
3-3.2.1 Power Input
The MPCII Mid Points Controller's power requirements are one of the following:
• 24VAC ±10%, 50/60Hz, Power Consumption: 7 VA
• 24VDC ±10%, Power Consumption: 4 Watts
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.
A single transformer may be used to supply voltage to more than one unit (such as a MPCII Mid Points
Controller and associated Remote Expansion Modules) providing the planned load is well within the
transformer’s rating. The transformer output terminal designated as AC Neutral must be solidly
earthed to the enclosure’s main earth link.
Power input terminals are Terminals 1, 2 and 3 and are detailed below in Table 3-8:
Terminal AC Supply DC Supply
1 24VAC +24VDC
2 0VAC (Neutral) -24VDC
3 Earth Earth
Table 3-8: MPCII Mid Points Controller Power Input Signal Conditions
Resistance between Terminal 2 and Earth must be 3 Ω or less.
NOTE