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temperature of 158° F. Although this is 43° F margin above ambient conditions,
the rise above ambient must be accounted for. The typical rise above ambient
inside the starter enclosure is 20° F. This is due to heat generated by the
electrical equipment inside the enclosure, such as the control transformer,
contactors,etc. External factors can cause the rise above ambient to exceed this
value. These factors include improper installation spacing requirements,
ventilation problems, direct sunlight exposure, etc.
Exceeding these temperature limits can cause many electrical problems
including the Intellisys. Intellisys problems include shutdown “Ready to Start”,
blank or abnormal display problems, and memory problems.
Procedure
To test the system for temperature related problems a temperature probe can be
used. Measurements should be made inside the starter enclosure with the
enclosure door shut. If possible, take the measurements in the upper half of the
enclosure to get worst case readings.
1.8
Vibration:
Background
Excessive vibration or shock can cause intermittent electrical connections.
Excessive vibration and shock can cause poor terminal and crimp connections.
Screw terminals can become loose which will cause intermittent open circuits to
occur. This can lead to arcing and even faults to adjacent circuits. Crimped
connections, such as terminal spade lugs (Faston), can fatigue and also cause
open circuit conditions.
Procedure
To inspect for loose wiring caused by vibration and shock use the following
procedure:
Remove power from machine.
Visually inspect all electrical connections for evidence of loose wiring, arcing, and
frayed wiring.
Manually pull each wire at the terminated end and inspect for loose wiring. 5-10
pounds of pull force should be asserted.
1.9
Remote Alarm applications:
Background
The remote alarm feature of the Intellisys provides a volt-free form “C” relay
contact for application use. The contacts are rated for a maximum of 5 Amps,
250 VAC. This rating is specified for a resistive load, such as an incandescent
Summary of Contents for INTELLISYS SSR Series
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