Figure 7 Control Unit 1-53836-K276 (Without Membrane)
2.2 CONTROL UNIT CABLING
24v DC Input supply
The Mk7 Control Unit should be powered from a floating 24v DC supply (+30% -25%) rated at 1.0Amp
continuous rated, with 2.5Amp surge for 1.5ms.
PLEASE NOTE: - The Control unit(s) may not operate correctly if the external 24v power supply
is referenced to the vessel earth and there is also a risk the input protection circuitry in the units
could be damaged.
Cables should be segregated from high voltage cables and follow good installation practice.
Cable type-2 Cores + Earth, CSA 2.5mm
2
(50/0.25mm), flexible stranded bare copper conductors, low
smoke halogen free insulation, cores laid up, braided screen, low smoke halogen free sheath grey,
outside diameter 9.8mm, operating temperature 0ºC + 80ºC.
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