29/11/2017
CM2M-K
2 Channel Fan Current Monitor
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Dual channel current monitor.
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Coarse and fine sensitivity adjustment
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Range 30 mAmps to 24 amps
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Reduces nuisance dropouts
CM2M-K Features
Note
: These instructions are designed to be read in conjunction with those for a Medem control panel
which has ventilation interlock, herein referred to as the main panel.
The CM2M-K is a two channel current monitoring devices designed to monitor the power being drawn
by the ventilation and provides the interconnection to the main panel in order to correctly interlock the
ventilation.
It comprises two current monitor circuits A & B and can therefore interlock two separate fans.
The maximum cable length between the CM2M-K and the main panel should not exceed 100 metres, whilst we would always
recommend using screened cable if the distance between the main panel and the detectors is greater than 20metres a 1mm
screened cable must be used on the +VE, 0v terminals
We recommend a six core screened Belden type security cable or 600v rated BMS cable (max cable length of 100meters.)
Warranty will be void if Fire Protection Cable or cable over 1mm dia. is used on the SELV side.
The CM2M-K must be installed before any speed controllers or inverters.
Mains rating: 240/440 VAC 50HZ, 24 Amps Maximum Continuous.
When using with a 3phase fan, wire one single phase only through the current monitor.
NOTE: MAINS WIRING AND SIGNAGE MUST BE IN ACCORDANCE WITH CURRENT IEE WIRING REGULATIONS.
