For ISP-X/65, For ISP-X/135, IxR compensation

The reference signal should be connected to the differential input and R3,R4 should be calculated and inserted according to:

R3 = R4 = 1.33xVdm	(Kohm)
Vdm - maximum reference	voltage at the differential input.

The armature voltage feedback will enter the error amplifier by inserting R8, calculated for the two voltage types as follows:

For ISP-X/65:

R8(65V) = 1.3xVam

(Kohm)

Vam - armature voltage at maximum application speed

R8(135V) = 0.73xVam(Kohm)

Vam - armature voltage at maximum application speed

In order to improve the speed stability in various load conditions, an IxR compensation is required. This is achieved by:

-Connect the Current Feedback Monitor (terminal H-7,R-26a,E-J1/6) to input 1 (terminal H-1,R-32a,E-J1/3).

-Rotate T7 to max. CCW position (minimum IxR compensation).

-Insert R1 as follows:

Vam - Armature voltage at maximum application speed.

Ip - Amplifiers' rated peak current limit.

Rm - Total ohmic resistance of motor.

ISP - Rev 6/95