PCME QAL 181 X, User Manual, Page: 45 / 106

- PCME QAL 181 MANUAL: 45 -
The 4-20mA and Host/PC communications outputs are SELV circuits in
accordance with EN 60950-1:2001 and must only be connected to other
SELV circuits.
The controller should be cleaned with a dry or lightly dampened cloth only
5.2 Tools and Materials
No special tools are required to install the Interface Module.
Data Cabling Specification
Data cabling for the Interface Module must meet the following specification:
•
2 pair (4 core), 0.5mm
•
BS5308 part 2, type 1
•
Overall tinned copper braided or foil screen
•
Flame retardant PVC outer sheath (outside diameter 7.9mm)
•
Colour coding (power): black (0v), brown (24 Vdc)
•
Colour coding (comms): green (A), blue (B)
Power Supply Cabling Specification
For mains connections, use appropriate cable with conductor area in range 0.75mm
2
to 2.5mm
2
,
according to your local regulations.
All cabling should be rated for use up to 65
°
C (to allow for ambient temperature of 55
°
C).
5.3 Location Requirements
When selecting a mounting location for the Interface Module the following should be taken into
consideration:
Exterior locations should be selected for minimum sun exposure and if possible some form of
environmental protection should be provided.
If the unit is located in an area which is accessible to unauthorised personnel it is recommended
that access to the unit be restricted by some form of lockable cabinet.