R&M Materials Handling HOIST MONITORS - Manual (Page 34)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
34/105
R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
7 Optional functions
7.1 General
The hoist-monitoring unit can be equipped with a number of additional features. Each one of the features
can, under certain restrictions, be chosen during the ordering process of the hoist, or added in
afterwards. Contact a service agent authorised by the manufacturer for further details.
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.
7.2 Slack rope protection
The slack rope protection prevents lowering the hook when the measured load descends under a pre-set
load limit. When slack rope occurs during lowering, the motion will be stopped according to the normal
stopping sequence. Movement in upward directions is allowed, and will reset the slack rope protection.
The slack rope protection can by by-passed by programming either one of the multi-functional inputs
(MFI1 or MFI2).
SW 2.100 or later: When slack rope function is activated the unit shows “Fault Srope” on the
display. If unit’s software is SW 2.004 or earlier the unit doesn’t show anything when slack rope is
activated and lowering is prevented.
The slack rope by-pass function requires an additional selector switch or by-pass button (e.g. on
the pendant station).
7.2.1 Slack rope protection instructions
Slack rope protection parameters
Parameter Value Description Note
4-1
MFI1 Accessible with password 4: 8124
4-1-1
MFI1 oper. Srope Slack rope by-pass It is recommended to connect a switch to the multi functional input in
order to temporarily by-pass the slack rope function, in order to be
able to perform repairing actions (replacing hoisting ropes etc.) and
to swap load handling device (when applicable). If the by-pass
function is not required, set this parameter to “NU”
If the MFI1 input is already in use for another function, use the MFI2 for the by-pass switch and set
parameter 4-2-1 to “Srope”.
Parameter Value Description Note
4-9
Slack rope Accessible with password 4: 8124
4-9-1
SR select Yes Selects the slack rope function
4-9-2
Load limit “n” t Sets the slack rope limit. When the measured
load is less than the limit, lowering is prevented.
Range 0…rated load of the hoist. In practice, the minimum value is about 10% of the rated load of the
hoist, or higher.
A right Slack Rope level must be adjusted during the commissioning of the hoist.