Harrington Hoists and Cranes MR Trolley - (MR2) - Manual (Page 44)

6.0 Maintenance & Handling
6.1 Count/Hour Meter (Dual Speed Only)
6.1.1 Dual Speed
 On dual speed trolleys, the VFD has a Count/Hour function built into the parameters. Refer to
Table 6-1 for parameter identification. Refer to Table 6-2 for Count/Hour access procedure.
Table 6-1 VFD Count/Hour Parameter Identification
Parameter Name Discription
U7-01
Number of Starts
(Higher Order)
The number of starts in the down direction x 1,000. Up to 10,000 units are displayed.
Display of “1” = 1,000 starts.
Display of “10,000” = 10,000,000 starts
U7-02
Number of Starts
(Lower Order)
The number of starts in the down direction under 1,000 starts (1 to 999). One start
will register a “1” in the display. When 1,000 starts are reached, the value of U7-01 is
incremented by 1 and the value of U7-02 is reset to 0.
U7-03
Hours of
Operation
The number of hours of operation in both the up and down directions. One hour will
register a “1” in the display. Up to 65535 hours are displayed.
 Example using Table 6-1:
•
U7-01 displays “81”, U7-02 displays “567”, U7-03 displays “122”
•
Number of Starts (down) = 81,567
•
Number of Operated Hours = 122
Table 6-2 VFD Count/Hour Access Procedure
Operational Step VFD Display
1. Energize the hoist.
2. Press until the “Monitor” screen is displayed (blinking).
3. Press to display the parameter setting screen an then press to move from
“01” to “U1”.
4. Press or until the display reads “U7” (left value blinking).
5. Press and or to select the specific “Monitor” parameter (right vlaue
blinking).
(Example: U7-03 –Hours of Operation)
6. Press to display the current parameter value.
(Example: 75 Hours)
7. Press until the diplay returns to the initial screen.
(As in Step 1.)
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