General Information 1-11
MN1269
Adjustments
Each servo control card contains six (6) potentiometers located on the top left side of the
unit. The location of each potentiometer is provided in Figure 1-4.
Auxiliary (A)
(A) pot is used to adjust the gain of an optional single ended input voltage between
±
10
VDC. The effect of changing the gain enables the installer to vary the motor speed for a
given signal input voltage.
Signal (S)
(S) pot is used to adjust the gain of a single ended or optionally configured differential
input voltage between
±
10 VDC. The effect of changing the gain enables the installer to
vary the motor speed for a given signal input voltage.
Tachometer (T)
(T) pot is used to adjust the tachometer circuit gain. The effect of changing the gain
enables the installer to vary the overshoot or stiffness of a motor as it is commanded to
change speeds.
Response (R)
(R) pot is used to adjust the overall velocity loop gain. The effect of changing the gain
enables the installer to vary the stiffness of the velocity loop to minimize the overshoot of
the axis when responding to a step input voltage.
Current Limit (C)
(C) pot is used to attenuate the peak current output to the servomotor. This can
effectively reduce the overall RMS current in applications, which are subjected to
constant acceleration and deceleration changes.
Balance (B)
(B) pot is used to compensate for the digital to analog offset errors. This will allow for fine
tuning the zero speed when the input device is installed and there is no signal–input
voltage to the servo control.
Figure 1-4 Adjustment and Indicators
Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097
(973) 335-1007 • Toll Free: (800) 922-1103 • Fax: (973) 335-1661
www.servosystems.com
