Cooper TP Workshop Manual_Scant:Layout 1 7/8 ... - Cooper Security

MRNodeFigure 3 shows the connections for the MRNode to the alarm system controlunit.(A=+12VdcB= 0V)ABFGABFGF (or C/F)GABG (or E/G)FABFGMax. 100mMax. 100mFigure 3.Cooper Security Ltd normally recommend that you use 7/0.2 alarm cable fornetwork wiring. However, in areas with high levels of radio frequencies thenyou may need to use screened cable: refer to the control unit installationinstructions.The distance from the control unit to the furthest device on the network mustnot exceed 1km.The supply voltage across the “NETWORK IN” A and B terminals must notbe less than 12Vdc. If the voltage is too low then double up the power coresor fi t a remote power supply.AddressingWhen you fi t a MRNode expander you must allocate the expander to a specific node number. Fit the link to the appropriate position to set the addressof the MRNode (1-16). Ensure that no two devices on the same networkhave the same address.Figure 4.Entering and Leaving Learn Mode.To make the MRNode learn transmitters you must connect the unit to a12VDC supply. Take the supply from the alarm system control unit by connectingas shown in Fig 3. Alternatively, you can power the MRNode temporarilyby connecting a 12V battery to the 12V and 0V connectors shown inFig 3. When you apply power for the fi rst time the display shows “88” for afew seconds. You hear a short double beep.7 of 10