Page 11
IronHorse GSD1 DC Drives User Manual – 2nd Edition, Revision B – 10/12/2018
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DjUSTMenTS
Before the power is applied, set the voltage selection jumper to the correct voltage.
An incorrect
jumper setting will not damage the drive, but will affect the trim pot adjustments. The speed
potentiometer and trim pots should be preset as follows:
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1)
Preset Speed pot fully CCW�
2)
Preset MAX trim pot CW 1/2 way�
3)
Preset CURRENT LIMIT trim pot fully CW�
4)
Preset MIN trim pot fully CCW�
5)
Preset ACCEL trim pot CW 1/2 way�
6)
Preset IR trim pot fully CCW�
DC power can now be applied
to the system and the DC Drive adjusted as follows:
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7)
Increase the MIN trim pot CW until just before reaching an output voltage (deadband), or until the
desired minimum speed is reached�
8)
Turn the Speed pot fully CW and adjust the MAX trim pot until the desired maximum speed is
reached�
9)
Adjust the ACCEL trim pot to achieve the desired soft start time�
(CW rotation will increase accel time�)
10)
Rotate the CURRENT LIMIT trim pot fully CCW� Apply a full load to the motor� While motor is
stalled, adjust the CURRENT LIMIT trim pot CW until a desired current setting is obtained�
(Approximately 125% of rated motor current is recommended�)
11)
For 10A models
GSD1-48-10C:
Set the Speed pot to approximately 50%, and note the motor RPM� Load the motor to normal load
condition and adjust the IR trim pot CW until motor RPM is equal to the unloaded speed�
For 20A models
GSD1-48-20C:
Adjust the IR trim pot CW 1/2 way� If the motor speed is inconsistent (jumpy), rotate the IR trim pot
CCW until the motor rotation becomes stable�
12)
If the voltage selection jumper setting is changed, repeat Trim Pot Preset and Trim Pot Adjustment�
T
roUbleSHooTinG
If a newly installed DC Drive will not operate, it is likely that a terminal connection is loose. Check the
terminal connections and ensure that they are secure and correct. If the drive is still inoperative, refer
to the Troubleshooting Table.
Troubleshooting
Problem
Possible Cause(s)
Corrective Action
Motor doesn’t run
1) Incorrect or no power
2) Speed pot set at zero
3) Worn motor brushes
4) Current Limit set too low
1) Install proper power service
2) Rotate Speed pot fully CW
3) Replace motor brushes
4) Adjust Current Limit trim pot CW
Motor “hunts”
1) Max trim pot set too high
2) IR Comp trim pot set too high
1) Refer to “Trim Pot Adjustment”
2) Refer to “Trim Pot Adjustment”
Motor runs uncontrollably at
“full speed”
1) Loose Speed pot connections
2) Min or Max trim pots improperly
adjusted
3) Possible drive failure
1) Secure all connections
2) Refer to “Trim Pot Adjustment
3) Contact ADC Returns for
replacement (800) 633-0405
Motor rotates in wrong
direction
Motor armature hooked up backwards
Reverse ar and - leads
Motor stalls under a light load
Current Limit trim pot improperly adjusted
Refer to “Trim Pot Adjustment”
