Control Troubleshooting Guide

(15, 125, 250, 500 Series Controls ONLY)

 

*Perform a visual inspection, looking for burn marks, burnt components and blown traces before testing

*Before beginning testing please be sure the fuses in the drive are good

The following should be checked with the drive disconnected from AC power and the motor.  Use the continuity
(diode checking) function of your multi-meter.  A short (indicated by a solid beep, not a momentary beep) on any
of the below indicates a drive that is in need of repair.

CHECK FOR SHORTS

 

Pin Locations

Measuring Points

15DV Series

125D Series

250G Series

530B Series

AC N to AC L

AC2 to AC1

P1-1 to P1-2

P1-10 to P1-11

-A to +A

-ARM to +ARM

P1-4 to P1-3

P1-4 to P1-5

P1-4 to P1-5

-A to AC N

-ARM to AC2

P1-4 to P1-2

P1-4 to P1-10

-A to AC L

-ARM to AC1

P1-4 to P1-1

P1-4 to P1-11

+A to AC N

+ARM to AC2

P1-3 to P1-2

P1-5 to P1-10

+A to AC L

+ARM to AC1

P1-3 to P1-1

P1-5 to P1-11

-A to POT HI

-ARM to SPEEDPOT HI

P1-4 to P1-6

P1-4 to P1-3

P1-5 to P2-5

Table 1 Continuity Check Points 


If none of the above measure as a short circuit, connect the speed pot, AC power and the motor to the drive per
the instruction manual.  Set your multi-meter to the DC voltage mode and measure the following:


CHECK FOR PROPER VOLTAGE

 

Pin Locations

Expected Measurement (Approximate)

Measuring Points

15DV Series

125D Series

250G Series

530B Series

120VAC Input

240VAC Input

-F to +F

-FIELD to +FIELD

P1-4 to P1-5

P1-6 to P1-7

P1-6 to P1-7

100VDC

200VDC

-A to POT HI

-ARM to SPEEDPOT HI

P1-4 to P1-6

P1-4 to P1-3

P1-5 to P2-5

12VDC

12VDC

-A to POT LO

-ARM to SPEEDPOT LO

P1-4 to P1-8

P1-4 to P1-1

P1-5 to P2-3

Varies w/ MIN pot

-A to POT WIPER

-ARM to SPEED POT WIPER

P1-4 to P1-5

P1-4 to P1-2

P1-5 to P2-4

Varies w/ SPEED POT

-A to +A

-ARM to +ARM

P1-4 to P1-3

P1-4 to P1-5

P1-4 to P1-5

45-60VDC (open motor);

0-90VDC (good motor)

90-140VDC (open motor);

0-180VDC (good motor)

Table 2 DC Voltage Measurement Points

If all of these tests pass please contact Dart Controls, Inc. technical support for further assistance.