R&M Materials Handling HOIST MONITORS - Manual (Page 54)

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.
10.4 Manual load calibration
Before starting the calibration, make sure you have a known test-load available of at least 80% and
maximum 130% of the nominal lifting capacity of the hoist
It is advisable to by-pass the overload protection during this calibration routine by setting the parameter
3-5 “OL protect” = OFF
The overload protection will automatically reset after 30 min. or after power off.
• Lift the test load up until it hangs freely and steady.
• Select parameter 3-4-1 “Load 1” and enter here the value of the test load (in tons)
• Select parameter 1-2-10 “Ain1 value” and read the value
• Select parameter 3-4-2 “Input 1” and enter here the value of parameter 1-2-10
• Select parameter 1-2-1 “Act. Load”. The display should show “nnn”t (where “nnn” is the value of your
test load), ±5%. Repeat steps 1 to 4 until the value is within the desired range.
• Lower the load and ensure the hook is empty
• Select parameter 3-4-3 “Load 2” and enter here 0.00t
• Select parameter 1-2-10 “Ain1 value” and read the value
• Select parameter 3-4-4 “Input 2” and enter here the value of parameter 1-2-10
• Select parameter 1-2-1 “Act. Load”. The display should show 0.00t, ±5%. Repeat steps 5 to 8 until the
value is within the desired range.