Harrington Hoists and Cranes (N)ER Hoist - ((N)ER2) - Manual (Page 22)

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Table 3-7 Dual Speed Hoist (w/VFD) Speed/Frequency Change Procedure

 Each dual speed hoist model has a range of available speeds/frequencies (upper and lower limits). Any
value outside the range listed in Table 3-6 for your specific hoist is strictly prohibited.
 Speeds must be set such as Low [d1-01] and High [d1-02].
 After parameters are changed, a “no load” operational check must be performed.
Operational Step VFD Display
1. Energize the hoist.
2. Press until the “Setup Mode” screen is displayed (blinking).
3. Press to display the parameter setting screen (blinking).
4. Press or until the desired parameter is displayed (blinking).
(Low Speed: d1-01, High Speed: d1-02)
5. When you press , the current setting value is displayed (digit selected blinks).
(Example Value: 9 Hz)
6. Press to move the blinking digit to the desired digit.
(Example Value: 9 blinks)
7. Press or until the desired setting is displayed and press .
(Example Value: 8 Hz)
8. Press to confirm the new setting.
9. The display will automatically return to the parameter screen (blinking).
(As in Step 4.)
10. Press until the diplay returns to the initial screen.
(As in Step 1.)