R&M Materials Handling HOIST MONITORS - Manual (Page 64)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
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R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
12.2.2 Adjustment
Tools needed for adjustment:
•
A small screwdriver for trimmers
• Test load
Adjustment can be done with either a test load of exactly 100% of the rated load of the hoist, or with a
known load in the range of 80…130% of the rated lifting capacity.
The adjustment is carried out in two steps:
•
Zero load adjustment
• “Known load” adjustment
12.2.3 Zero load adjustment
Adjustment is done with trimmer “ZERO”
•
Verify that there is no load in the hook
• Check the LED “0%”
• If the LED 0% is ON, turn the trimmer counter-clockwise until the LED just goes off
• If the LED 0% is OFF, turn the trimmer clockwise until the LED lights up, then counter-clockwise until
the LED just goes off.
• The output voltage (measured between terminal 1 and 3) should be about 4 VDC (+/- 0.5 VDC)
12.2.4 Adjustment with higher load
Adjustment is done with trimmer “GAIN”
•
Lift the higher load and wait until the load hangs steady and does not swing
• Check the LED “100%”
• If the LED “100%” is ON, turn the trimmer clockwise until the LED just goes off
• If the LED is OFF, turn the trimmer counter-clockwise until the LED lights up, then clockwise until the
LED just goes off.
• The output voltage (measured between terminal 1 and 3) should be about 6 VDC (+/- 0.5 VDC)
• Lower the load and verify that the “0%” LED remains OFF
• Lift the load again and verify that the “100%” LED remains OFF