Helm Trend Loadgard TLG2300, Operating Instructions Manual

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OPERATING INSTRUCTIONS TREND SERIES
A mechanical relay is provided to activate machine stop when an alarm condition occurs. This relay is wired
“fail-safe” and will pass current through the normally closed and common contacts when the instrument is
turned on and no alarms are tripped. Current rating for these contacts is 10 amps at 120VAC. Cam switch
connections are supplied, if applicable.
CARD RACK - Channel Boards
The steel cabinet (card rack) inside the instrument holds all the circuit boards. Slot #1 is reserved for the
optional computer interface card. Slot #2 contains the microprocessor board that controls all instrument
logic. Slot #3 is open.
Slots #4 through 7 are reserved for channel boards. Refer to the illustrations below for the proper location of
each channel board in your instrument(s).
Channel boards are interchangeable. Use the jumper plugs on the individual
channel boards for setting the proper channel board number.
NOTE: Jumpers are factory set prior to shipment. Adjust this jumper only if
you switch channel board locations.
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