Helm Trend Loadgard TLG2300, Operating Instructions Manual

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OPERATING INSTRUCTIONS TREND SERIES
INSTALLATION GUIDELINES
TREND LOADGARD INSTALLATION
WARNING
If this unit is modified in a manner not specified by the manufacturer, protection provided may be impaired.
Repair or calibration of this equipment is to be done by authorized personnel only. This unit contains no
serviceable parts other than those outlined in this manual. Return unit to manufacturer for repair.
For purposes of safety, this unit is to be permanently installed. Electrical lines will be housed in conduit so
that wiring is not subject to mechanical stress. A means of electrical disconnect (switch or circuit breaker)
shall be included in the permanent power installation. This disconnect device will be in close proximity to the
equipment and within easy reach of the operator. The device will be clearly marked as the disconnect for
the equipment (ref. Drawing T-2227 Appendix A).
For best results, mount the TREND Loadgard at eye level and within operators' reach. Use the supplied
rubber shock mounts to isolate the unit from vibration. Care should be taken to insure that the instrument
chassis ground
Ω
is the same potential as the machine ground. See Mounting Detail Illustration in
Appendix A.
ENVIROMENTAL CONDITIONS
This unit is designed for indoor use only. Operating temperature range is from 5
º
C up to 55
º
C.
STRAIN GAIN INSTALLATION AND WIRING
Specific sensor location and mounting instructions are described in the “Installing Strain Gain Transducers”
manual. Refer to this manual for proper location and installation. Sensor nominal resistance values should
check out in accordance with HELM drawing number T-2344-51 in Appendix A. For proper wiring, use
separate conduit or sealtite for transducer cables and avoid running these cables with any press control or
high power motor circuits. Transducer cables should never be run near high voltage (220VAC, 440VAC)
circuits.
SENSOR WIRING CONNECTIONS
The Sensor Terminal Strips are located inside the box, above the circuit board card rack.
NOTE: Always route power and sensor cables through proper holes as designated inside the
LOADGARD enclosure
.
TENSION
COMPRESSION
+G (gage positive) green black
-G (gage negative) black green
-S (signal negative) red red
(shield) shield shield
+S (signal positive) white white
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