Eaton MTL5511 - Accessories; MTL5500 Power Bus - Installation and Use

INM 5500 Rev 10
6
3.2.2.3 Finishing
Wire up individual isolators in accordance with wiring schedules. Daisy-chain power supply
connections 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 to
avoid errors and maintain a tidy installation.
Use an MTL5599 dummy isolator to provide termination and earthing for unused cores from the
hazardous area.
4 ACCESSORIES
4.1 MTL5500 power bus - Installation and use
4.1.1 MTL5500 range power bus
A power bus kit enables power supply terminals (13 and 14) of up to 32 installed MTL5500 range of
units to be linked to a standard 24V power supply. The bus consists of a chain of power plugs and
different 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-8T
9 to 16 PB-16T
17 to 24 PB-24T
25 to 32 PB-32T
Table 4.1: Power bus kit options
4.1.2 Installation
1. 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 off
the surplus power plugs at the tail end of the chain - leaving sufficient cable to attach further
power 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 displacement
connectors [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 are
safely terminated and/or connected together. Use single ferrules with a crimp tool or insulation
displacement connectors (Scotchloks). Suitable ferrules and connectors are provided with the kits.
Figure 4.1: Power bus wiring, joining and terminating
– +
Optional insulation
displacement
connectors
x2