36
Appendix A
Modification for Subfractional Horsepower Motors
Note: Before making this modification you must have a .05 ohm Plug-in Horsepower Resistor®
(Baldor P/N WD3007A07).
Carefully clip out the large power resistor R69 on the printed circuit board. The resistor location is
indicated in Figure 3, on page 15. Insert the .05 ohm Plug-in Horsepower Resistor® into the two (2)
pins located under the resistor, R69. Each of the current selection values are now divided by 10.
See Table 13, below.
TABLE 13 - CURRENT LIMIT SETTINGS with .05 OHM
PLUG-IN HORSEPOWER RESISTOR
®
INSTALLED
OriginalJ4 Current
Jumper Selection
New J4 Current
Jumper Selection
New Current Limit
Trimpot Range
New Current Limit
Trimpot Factory
Setting
10. 0 Amps
1.0 Amps
0 – 2.0 Amps
1.50 Amps
7.5 Amps
0.75 Amps
0 – 1.5 Amps
1.13 Amps
5.0 Amps
0.5 Amps
0 – 1.0 Amps
0.75 Amps
2.5 Amps
0.25 Amps
0 – 0.5 Amps
0.38 Amps
Summary of Contents for NEMA-4X
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