R&M Materials Handling HOIST MONITORS - Manual (Page 50)

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.
9.3.3.5 Motor temperature limit ”TempX”
• Contact closed when the motor temperature exceeds the limit “X”
• Check the limit value by parameter 4-3-5
• Check the input selection by parameter 4-3-4
• “T1” temperature measurement T1 determines the operation of the relay (typically the low speed
windings)
• “T2” temperature measurement T2 determines the operation of the relay (typically the high speed
windings)
• “T1+2” both T1 and T2 are used. When either one reach the limit, the relay operates.
• Check that the relay works.
9.3.4 Analog output AOUT
• Check the output operation by parameter 4-6-1.
• Check that load value is same on the unit’s display as on the and large display
- 4-6-1 Oper. is Act. then “Actual load mode” value should be same than large displays value
- 4-6-1 Oper. is Tare. then “Tare load mode” value should be same than large displays value
- 4-6-1 Oper. is Solo. then parameters 1-2-1 value should be same than large displays value
• If load value differs with empty hook the correct value is achieved by adjusting parameters 4-6-2
- If the large display load value is bigger than unit’s load value then decrease parameter 4-6-2 value
- If the large display load value is lower than unit’s load value then increase parameter 4-6-2 value
• If load value differs with test load on the hook the correct value is achieved by adjusting parameter 4-
6-3
- If the large display load value is bigger than unit’s load value then decrease parameter 4-6-3 value
- If the large display load value is lower than unit’s load value then increase parameter 4-6-3 value
9.3.5 Slack rope
Slack rope feature only functions properly when a load-handling device is attached to the hook. It is
not recommended to activate the Slack rope function if no load-handling device is present.
The slack rope protection prevents lowering the hook when the measured load descends under a pre-set
limit. When slack rope occurs during lowering, the motion will be stopped according to the normal
stopping sequence. Movement in upward direction is allowed, and will reset the slack rope protection.
The slack rope protection can be by-passed by programming either one of the multi-functional inputs
(MFI1 or MFI2).
• Check the parameter 4-9-1 SR select, if “Yes”
• Check the load limit value by parameter 4-9-2. In practice, the minimum value is about 10% of the
rated load of the hoist, or higher.
• Lower the hook carefully in slow speed onto a stable platform.
• The motion should stop.
Pay attention to the rope coming from the drum. Make sure the rope does not jump out of the drum-
grooves.
• Drive carefully in slow speed upwards, while guiding the rope coming from the drum by hand.
• If a slack rope by-pass switch is installed, check the function of it from the parameter 4-1-1 or the
parameter 4-2-1. If either ones parameter value is “Srope” then do the following checks.