Murphy Xpansion IX3212, Справочное руководство

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Section 80 00-02-0829
2018-02-26 - 9 -
2.3 Circuit Protection
A fuse or circuit break on the positive power input (connector J2) is required and should be
located near the power source (e.g. battery).
The outputs are monitored for over-current conditions and turn-off in the event of the fault. For
information on how to configure the output current limit, refer to Section 4.3.2 – Configure
Output Channels.
2.4 Recommended Wiring Practices
This section contains information about the IX3212 connectors and pin outs. Please use the
following recommended wiring practices when installing and using the PDM:
• Ensure correct and adequate single point ground to prevent ground loops.
• Use twisted or twisted shielded pair cable for the CAN bus per the applicable standard.
• Ensure the appropriate sized conductor is specified for the intended load current in the
harness design for the particular application.
o SAE J1614 specifies requirements and design guidelines for electrical wiring
systems of less than 50 V and cable diameters from 0.35 mm 2 to 19 mm 2 used
on off-road, self-propelled earthmoving machines as defined in SAE J1116 and
agricultural tractors as defined in ASAE S390.
o SAE J2202 recommends and describes the application of the primary wiring
distribution system of less than 50 V and includes wire sizes 0.5 mm 2 to 19 mm 2
on heavy-duty on-highway trucks.
o SAE J1128, ISO 6722 and JASO D608-92 automotive wiring standards aid in
determining the recommended conductor sizing table for the respective 12V or
24V system that is powering the load.
o ABA specifies a marine wiring standard that differs from SAE J1128.
• Wire gauges should be capable of handling at least 135 percent of the circuit’s current
protection rating.
o Determine the maximum load the wire is expected to carry, the location of wiring
(e.g. in a cab or engine compartment) and ambient temperature).
o Determine the length of the wire needed to extend from the power source to the
load. Include the ground wire length if used.