R&M Materials Handling HOIST MONITORS - Manual (Page 40)

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.
7.8 Load tare
With an additional switch, the monitored load on the display can be tared (tared load value is set to zero).
This option is most useful when the hoist is equipped with the display in the push-button station, or when
the crane is equipped with an additional load display.
7.8.1 Load tare instructions
An additional switch or pushbutton must be connected to either one of the MFI-inputs. Closing the switch
will set the tared load value to zero.
Load tare instructions parameters
Parameter Value Description Note
4-1 MFI1 Accessible with password 4: 8124
4-1-1
MFI1 oper. Tare Activates the load tare function Closed contact will set the tared load to zero
In case the MFI1 input is in use for another function, connect the switch to the MFI2 input and set
parameter 4-2-1 to “Tare”
7.9 Levelling function
The levelling function is a feature especially designed for multi-hoist applications, where the positions of
the hooks are balanced in the upper position. This function is most useful when the crane is handling
fixed or similar known loads, such as containers or long objects.
In normal operation, both hoist will stop the motion when either one of the hoist-monitoring units detects a
fault or is stopped by a limit switch. This prevents the load from tilting.
The levelling function allows each hoist individually to continue hoisting close to the upper limit switch
until the hooks are balanced.
7.9.1 Levelling function instructions
To activate the levelling function, an additional levelling limit switch has to be connected to either one of
the MFI-inputs.
Levelling function parameters
Parameter Value Description Note
4-1 MFI1 MFI1 parameters Accessible with password 4: 8124
4-1-1
MFI1 oper. Level Activates the levelling function in multi-hoist
applications
In case the MFI1 input is in use for another function, connect the switch to the MFI2 input and set
parameter 4-2-1 to “Level”