6 UNIT DESCRIPTIONS, SETTING-UP AND CONNECTIONS
This section describes the function (briefly), the setting-up procedure and the wiring
connections for each MTL4500 range of unit. For a fuller functional description and a detailed
technical specification, refer to the individual datasheets, which can be found on our
website
at http://www.mtl-inst.com or in the current MTL IS catalogue.
If a fault is suspected, first check that the power LED is lit (not applicable to loop-powered
devices). If necessary, check that all signal and power plugs are properly inserted, that no
wires are loose and that the unit is mounted correctly. If operation is still suspect, the unit
should be replaced with a servicable unit.
There are no replaceable parts inside the MTL4500 range of units, so any that appear to be
inoperative should be returned to the manufacturer/supplier for repair or replacement.
WARNING !
MTL4500 range
When disconnecting units for maintenance purposes, take care to segregate
hazardous and safe-area cables.
•
Short circuit hazardous-area cable cores to an IS earth or insulate and
secure the ends.
• Insulate and secure safe-area cables.
If testing a unit ‘in situ’ note that the test equipment used MUST be
intrinsically safe.
The rest of this section is divided into sub-sections based upon the following module types.
6.1 Digital Input modules
MTL4501-SR, MTL4504, MTL4510, MTL4510B, MTL4511, MTL4513, MTL4514, MTL4514B,
MTL4514D, MTL4514N, MTL4516, MTL4516C, MTL4517
6.2 Digital Output modules
MTL4521, MTL4521L, MTL4521Y, MTL4523, MTL4523Y, MTL4523L, MTL4523R, MTL4523V,
MTL4523VL, MTL4524, MTL4524S, MTL4525, MTL4526
6-3 Pulse and Vibration modules
MTL4531, MTL4532, MTL4533
6.4 Analogue Input modules
MTL4541, MTL4541A, MTL4541AS, MTL4541B, MTL4541P, MTL4541S, MTL4541 T,
MTL4541YA, MTL4541Y, MTL4544, MTL4544A, MTL4544AS, MTL4544B, MTL4544D,
MTL4544S
6.5 Analogue Output modules
MTL4545Y, MTL4546, MTL4546C, MTL4546S, MTL4546Y, MTL4549, MTL4549C, MTL4549Y
6-6 Fire and Smoke Interface modules
MTL4561
6.7 Temperature Input modules
MTL4573, MTL4573Y, MTL4575, MTL4576-RTD, MTL4576-THC, MTL4581
6.8 General modules
MTL4599, MTL4599N
6.9 PCS45/PCL45USB configurator for MTL temperature converters
Note: Any LED indicators provided on the modules will display in the following colours:
LED label LED colour
PWR (power) Green
STS (status) Yellow
LFD (line fault) Red
FLT (fault) Red
OPx (o/p status) Yellow
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