Graham 176B1111, Инструкция по эксплуатации

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IR COMPENSATION ADJUSTMENT (IR)
(Clockwise Increases Compensation)
This adjustment is provided to overcome the motor’s natural
tendency to slow down with increasing load. If improved
load/speed performance is required, this adjustment may be
used.
NOTE: In order to optimize performance with this adjustment,
some means of determining motor shaft speed is required. (i.e.
hand-held tachometer).
1 . Set motor speed to 1/2 of base speed rating.
2 . Load motor to 100% of nameplate rating; motor speed will
decrease.
3 . Turn IR clockwise until motor speed returns to original
unloaded RPM.
4 . Turn off load and notice if RPM increases beyond original
setting. If so, adjust trimpot while changing from no load to
full load to give minimum RPM change for each.
NOTE: Setting IR adjust too high can create motor instability.
Turn IR CCW until motor speed stability is achieved.
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