AutomationDirect IRON HORSE GSD5-240-10N4 Manuale d'uso - Pagina 12
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Stampa la paginaStart-Up
1) Recheck all wiring Accidental grounds, loose or pinched wires on armature or speed pot wires may
damage the DC drive when power is applied
2) Check to see that the incoming power is of the correct voltage
3) Turn the speed pot to zero (fully CCW)
4) Turn power on, and advance the speed pot while observing motor direction of rotation
Power must be turned off again before step 5 can be accomplished!
5) If the motor rotation is incorrect, turn power off at external disconnect, and reverse the +ARM and
-ARM connections
6) Check for satisfactory operation throughout the speed range
7) If operation is satisfactory, no readjustments are needed
8) If instability or surging is observed, or if maximum speed is higher than desired, refer to the "Trim
Pot Adjustments" section"
9) For other problems, consult the "Troubleshooting" section
Trim Pot Adjustments
If the system is unstable after the previous Start-Up procedure, then adjust the trimpots as follows.
These adjustments are maintained, and periodic readjustments are not normally needed. However,
readjustments could be needed if the drive is operated beyond ±10% of the rated line voltage.
For GSD5 Drives without Analog Current/Voltage Input Cards
GSD5-240-10C, GSD5-240-10N4, GSD5-240-10N4-R Trim Pot Adjustment *
Trim Pot
Function
Sets maximum motor speed
when speed pot is set at
maximum (fully CW rotation)
CW rotation of MAX trim pot
Max**
increases maximum motor
speed
Sets minimum motor speed
when speed pot is set at zero
Min**
CW rotation will increase
minimum motor speed
Calibrates speed regulation
Provides a means of
improving motor speed
regulation in the armature
IR Comp
feedback mode If a
slowdown due to load change
is of no concern, rotate this
trim pot fully CCW
Limits DC motor armature
current (torque) to prevent
damage to the motor or
drive The current limit is set
Cur Lim
for the rated motor current
CW rotation of this trim pot
increases the armature current
(or torque produced)
Allows adjustment of
Accel
acceleration by user
* Adjustments are performed with motor connected to drive.
DO NOT USE this adjustment procedure for GSD5-240-10C DC drives with GSDA-AI-A analog current input cards, for
GSD5-240-10N4-A drives, or for GSD5-240-10N4-V drives.
** For Max and Min adjustments of the GSD5-240-10C DC drive with GSDA-AI-A analog input cards, the GSD5-240-
10N4-A drive, or the GSD5-240-10N4-V drive, refer to the adjustment procedures on the following page.
Page 12
Adjustment
1) TURN DRIVE POWER OFF!!
2) Connect a DC voltmeter: + to +ARM; - to -ARM
3) Set meter voltage range: (90 VDC for 120 VAC; 180 VDC for 240 VAC)
4) Turn power on Set Speed pot at 100%
5) Adjust MAX trim pot to rated motor armature voltage as shown on meter
NOTE: A tachometer or strobe may be used in lieu of a meter Follow above
steps, except adjust MAX trim pot to rated motor base speed indicated by
tachometer or strobe
1) Set Speed pot to zero (fully CCW)
2) Rotate MIN trim pot CW until motor starts to rotate
3) Slowly rotate MIN trim pot CCW until motor stops
NOTE: If motor rotation is desired, rotate MIN trim pot CW until desired
MIN speed is reached
1) Set Speed pot at 50%
2) Observe motor speed at no load condition
3) Apply full load to motor
4) Turn IR COMP trim pot CW to obtain the same motor speed as with no load
1) TURN DRIVE POWER OFF!
2) Connect a DC Ammeter between A1 on motor and +ARM on drive This is
in series with the motor
3) Turn power ON
4) Set Speed pot at the 50% position
5) Apply friction braking to motor shaft until motor stalls (zero rpm)
6) With motor stalled, set current at 125% of rated motor armature current by
adjusting CUR LIM trim pot
CW rotation of the ACCEL trim pot increases acceleration time
IronHorse GSD5 DC Drives User Manual – 1st Ed, Rev E – 05/13/2020