DRAFT - 07 March 2016
DRAFT - 07 March 2016
INM MTL GECMA WS display rev 2
13
6 .3 .1 Electrical DC power
Electrical DC power must be supplied from the MTL GECMA WS AC or DC PSU
module, both of which are Ex certified for use in Zone 1 hazardous areas.
The MTL GECMA WS PSU modules are designed to mount on the rear of the display
module. Four mounting studs are provided on the rear of the display for this purpose.
For details of how to install either of these modules see the MTL GECMA WS PSU
module installation manual.
Connect the display’s power cable to the MTL GECMA WS PSU as follows.
1. Feed the display power cable through the middle (M16) cable gland
of the PSU.
2. Connect the five wires to the spring-clamp connectors of the power supply
ensuring that the cable colours are in the same order as the ones shown in
the diagram.
Colour code
Pin assignment
Function
Yellow
22V DC
Output
Orange
22V DC
Output
Red
5V
Output
Black
0V
Output
Brown
22V DC
Input Fused
3. Tighten the cable gland nut to the recommended torque to ensure an
adequate seal around the cable.
When all connections have been made on the PSU, replace the cover securely using
the four screws provided and tighten them to a maximum torque setting of 2 Nm.
6 .3 .2 Video signal
The video signal is provided by the MTL GECMA COM module. This module is
designed to mount on the rear of a MTL GECMA WS display and provides the
local video signal processing and Ex interface for the signal cable going to the safe
area. For details of how to install this module see the MTL GECMA COM module
instruction manual.
The thicker multi-way cable and connector that is situated at the bottom edge of the
potted display module carries the video signal. Connect this cable to the multi-way J302
video connector on the COM module as indicated in the diagram on the next page.
