Kb-electronics KBRG-212D Manual de usuario descargar pdf (Pagina 27)

c. Apply power; Rotate CL trimpot CW until desired CL setting is reached (factory

setting is 1.5 times rated motor current). Be sure control is in Forward direction for

FCL trimpot adjustment and likewise with RCL.

WARNING! DO NOT LEAVE MOTOR SHAFT LOCKED FOR MORE THAN 2 - 3

SECONDS, TO PREVENT MOTOR DAMAGE.

CAUTION: Adjusting the CL above 150% of motor rating can cause overheating and

demagnetization of some PM motors. Consult motor manufacturer.

10.4 IR Compensation (IR Comp)

- The IR Comp is

used to stabilize motor speed under varying

loads. The IR Trimpot is factory set to 5 Volts

DC, with 115 Volt AC line input, and 10 Volts

DC, with 208/230 Volt AC line input. See

Figure 23.

If control is in Tach Feedback mode, the IR

Comp should be set to minimum -CCW.

Note: Too much IR Comp will cause unstable

(oscillatory) operation.

Readjust the IR Comp trimpot as follows:

a. Run motor at approximately 30-50% of rated speed under no load and measure

actual speed.

b. Load motor to rated current. Rotate IR Comp trimpot so that loaded speed is the

same as the unloaded speed measured in the previous step.

Control is now compensated so that minimal speed change will occur over a wide range

of motor load.

FIGURE 22A – FORWARD

CURRENT LIMIT TRIMPOT

POSITION

FIGURE 22B – REVERSE

CURRENT LIMIT TRIMPOT

POSITION

FIGURE 23 – IR

COMPENSATION TRIMPOT

POSITION

1 2 ... 22 23 24 25 26 27 28 29 30 31 32

Sin comentarios

Kb-electronics KBRG-212D Manual de usuario Pagina 27