Harrington Hoists and Cranes (N)ER Hoist - ((N)ER2) - Manual (Page 23)

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Table 3-8 Hoist VFD 2-Step/3-Step Infinitely Variable Parameter Setup Procedure

 Each VFD controlled hoist model has a range of available speeds/frequencies (upper and lower limits).
Refer to Table 3-6 for a list of acceptable speeds/frequencies.
 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
Change Mode to 2 Step or 3 Step.
1. Press or until the “Setup Mode” screen is displayed (blinking).
2. Press to display “d1-01”.
3. Table 3-6 lists the values that may be changed.
Title Parameter Description
Min. Frequency (Hz) – Low Speed d1-01 Default setting, dependant upon hoist. (Refer to Table 3-7)
Max. frequency (Hz) – High Speed d1-02 Default setting, dependant upon hoist. (Refer to Table 3-7)
Mode S1-25
1. Standard 2 Speed (default)
2. 2 Step Infinitely Variable
3. 3 Step Infinitely Variable (Requires optional hardware)
Acceleration Time (sec.)
(0 to 120 Hz) in 2 or 3 Step Mode.
S1-26 Apply for frequency range between d1-01 and d1-02.
Deceleration Time (sec.)
(0 to 120 Hz) in 3 Step Mode.
S1-27 Apply for frequency range between d1-01 and d1-02.
4. Press several times.
3.6.11 “Hbb” will appear on the dual speed unit’s VFD display when the Emergency Stop Button is depressed.
Turn the Emergency Stop Button clockwise to unlock the controls and allow hoist operation.