39
6.0
Maintenance and Handling
6.1
Count/Hour Meter
A count/hour function is included in all NER2/ER2 hoists. A Count/Hour Meter is included in the single speed
hoists and a count/hour function is one of the VFD parameters in the dual speed hoists.
6.1.1 Single Speed The Count/Hour (C/H) Meter located on the electrical control panel records the hoist's
The display will then show a total of 3 values. The first value will show an "H" and a 5 digit number
-1). After 3 seconds, the
contactor, through 999,999 st
-1). After 3 seconds, the display will automatically
-1).
The example in Figure 6-1 is as follows:
I
Operating Hours: 1,089 hours
Number of Starts: 2,031,091 starts
Figure 6-1
Count/Hour Meter
6.1.2
Contactor The C/H Meter can be used in conjunction with the amount of jogging to estimate when the
contactor(s) should be replaced. Jogging is when the pendant control buttons are pressed quickly and
repetitively to move the hook in small increments. Refer to Table 6-1.
Table 6-1 Criteria for Recommended Contactor Replacement
Jogging During Normal Operation
Change Contactor After:
(starts)
Rating
Approximate Jogging Frequency
Low
Jogging is rare.
1,000,000
Medium
During 25% of operations/lifts.
500,000
High
During 50% or more of operations/lifts.
200,000
Содержание ER2 Series
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