Harrington Hoists and Cranes MR Trolley - (MR2) - Manual (Page 32)

Table 3-10 Trolley VFD 2-Step/3-Step Infinitely Variable Parameter Setup Procedure

 Each dual speed trolley model has a range of available speeds/frequencies (upper and lower limits) and
acceleration/deceleration time parameters. Refer to Owner’s Manual MOTORIZED TROLLEY MR2
SERIES.
 Any value outside the range listed in Table 3-7 for your specific trolley 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. Tables 3-7 and 3-9 lists the values that may be changed.
Title Parameter Description
Min. Frequency (Hz) – Low Speed d1-01 11 Hz (default setting)
Max. frequency (Hz) – High Speed d1-02 63 Hz (default setting)
Mode S1-25
1. Standard 2 Speed (default)
2. 2-Step Infinitely Variable
3. 3-Step Infinitely Variable
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 2 or 3 Step Mode.
S1-27
Apply for frequency range between d1-01 and
d1-02.
Acceleration Time (sec.) (0 to 120 Hz) in 2 speed. C1-01
In 2 or 3 Step Mode, apply for the frequency
range between starting frequency (6.6 Hz) and
d1-01.
Deceleration Time (sec.) (0 to 120 Hz) in 2 speed. C1-02
Acceleration Time (sec.) (0 to 120 Hz) in 2 speed. C1-03
Deceleration Time (sec.) (0 to 120 Hz) in 2 speed. C1-04
4. Press several times.
3.5.12 “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.
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