Wiring
(refer to figure 7, 8, 9, 10, 11 and 12)
NOTE:
The wiring procedures in this manual are intended to ensure proper functioning of the device under normal conditions. However, because of the many variations in wiring codes and regulations, total compliance to these ordinances cannot be guaranteed. Confirm that all wiring complies with applicable regulations that relate to the installation of electrical equipment in a hazardous area. If in doubt, consult a qualified official before wiring the system.
NOTE
The control module (CPU board and Display Board) with cable should never be totally removed from the Relay board and housing. If it is removed there are bright red alignment markings on the cable and on the Relay board for you to use when
NOTE
Since all modern electronic equipment can be damaged by static electricity discharge it is important to discharge static electricity from your body by touching a grounded metal object before handling the module.
Refer to figure 1
The transmitter is made up of two assemblies. The enclosure / relay board are a single assembly to which the input is wired. The control module (CPU board and Display Board) is a separate assembly. To conduct wiring unscrew the two retaining screws from the front of the display board . (The control module is attached to the relay board by a cable. Do not detach the cable during wiring). Detach the module from the housing by grasping the centre (Pull Here) knob and pull straight away. Gently hang the module from the cable while you conduct wiring.
The use of shielded cable is highly recommended for signal, input, output and power wires to protect against interference caused by extraneous electrical 'noise'. Relay outputs do not require shielded cable. In applications where the wiring cable is installed in conduit, the conduit must not be used for wiring to other electrical equipment. The maximum distance between the sensor and controller is limited by the resistance of the connecting wiring, which is a function of the gauge of the wire being used. Refer to the manuals on the sensors used (and transmitters if used) for maximum wiring distances and wiring instructions (refer to Appendix B).
NOTE:
The controller contains semiconductor devices that are susceptible to damage by electrostatic discharge. An electrostatic charge can build up on the skin and discharge when an object is touched. Therefore, use caution when handling, taking care not to touch the terminals or electronic components. For more information on proper handling, refer to the Appendix A.
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