INM 5500 Rev 1063 2 2 3 FinishingWire up individual isolators in accordance with wiring schedules. Daisy-chain power supplyconnections between individual power plugs or use the power bus (see section 4.1).Segregate hazardous- and safe-area wiring into separate trunking or looms wherever possible toavoid errors and maintain a tidy installation.Use an MTL5599 dummy isolator to provide termination and earthing for unused cores from thehazardous area.4 ACCESSORIES4 1 MTL5500 power bus - Installation and use4 1 1 MTL5500 range power busA power bus kit enables power supply terminals (13 and 14) of up to 32 installed MTL5500 range ofunits to be linked to a standard 24V power supply. The bus consists of a chain of power plugs anddifferent lengths are available to suit various numbers of modules as follows.Number of modules Kit ID code(contains grey power plugs for 24V dc supply)1 to 8 PB-8T9 to 16 PB-16T17 to 24 PB-24T25 to 32 PB-32TTable 4 1: Power bus kit options4 1 2 Installation1. Check to make sure the bus length is correct for the number of modules involved.2. If the number of modules is less than the maximum number the chain will support, cut offthe surplus power plugs at the tail end of the chain - leaving sufficient cable to attach furtherpower plugs if it becomes necessary later.3. Insert power plugs into the power terminals on the safe- area side of each module in sequence.4. Connect the power supply source to the tail end of the chain (using the insulation displacementconnectors [Scotchloks] provided if required).Notes:1. To avoid excessive voltage drop or over-current, DO NOT connect power buses in .2. Surplus sections can be used (and, if required) connected together provided the cut ends aresafely terminated and/or connected together. Use single ferrules with a crimp tool or insulationdisplacement connectors (Scotchloks). Suitable ferrules and connectors are provided with the kits.Figure 4 1: Power bus wiring, joining and terminating– +Optional insulationdisplacementconnectorsx2