4
INM MTL 9492-PS-PLUS Rev 2
3 .2 .1 Mounting power supplies on DIN rail
Clip power supplies onto type T35 DIN rail as shown in Figure 3.2, with the blue signal plugs facing
towards the hazardous-area wiring. To remove an power supply from the rail, insert a screwdriver
blade into the clip as shown and lever the clip gently outwards; pivot the power suppy off the rail.
Allow a maximum mounting pitch of 16.2mm for each unit.
3 .2 .2 Wiring up power supplies
Depending on the installation, it may be easier to wire up power supplies with power plugs either
in place or removed. Either way, allow sufficient free cable to permit plugs to be removed easily for
future maintenance and/or replacement purposes.
Power conductors
The removable power plugs are fitted with screw clamp terminals. Note that the conductors should
be between 14 and 24 AWG (1.6 and 0.5mm dia) in size. Plugs, located on top of the modules, are
mechanically keyed to fit in only one position. The input power plug slots into the socket at terminals
13 and 14 on the safe-area side of each module.
Making connections
a) Trim back the insulation of conductors by 12mm.
b) Check the terminal assignments shown in section 6 or on the side label of the unit.
c) Insert conductors according to the terminal assignments and tighten screws.
If the wires are to be fitted with crimp ferrules, 10–12mm is the recommended length of the metal tube.
If longer ones are used, they must be trimmed to 12mm before fitting.
Figure 3 .2
DIN rail mounting
and removal
of module
Figure 3 .2
Removable
power plugs