The SSA is a miniature PWM servo amplifier designed for DC servo motors.
It utilizes power MOSFETs which contribute to its high efficiency and compact design. The SSA is constructed
from two PCBs mounted on a heat sink plate. The lower board contains the power switching transistors
which drive the motor, terminals for the power stage, the switch mode power supply and the protection
logic. The upper PCB contains the control logic, terminals for the control stage, adjusting trimmers
and indication LED's.
Standard Features
Four quadrant operation allows motor acceleration and deceleration under power in both
CW and CCW directions.
Internal DC to DC converter allows for operation from a single supply.
Zero deadband.
Excellent linearity.
2 inputs.
Motor current monitor.
Inhibit/fault indication (open collector).
Remote control functions: Inhibit and CW/CCW disable.
Adjustable compensation.
Continuous and peak current limits.
Input balance (offset) adjustment.
External current limit adjustment.
Operation in two velocity modes (Tacho or armature voltage feedback) or current mode.
LED diagnostics.
Removable terminals for easy installation and service
Safety Features
Short between the outputs or between each output and supply ground.
Over temperature.
Under/over voltage.
Technical Specifications
DC output voltage is 90% of DC input voltage.
20KHz, 40KHz or 60KHz switching frequency. .
2KHz current loop response (minimum).
Outputs voltages of +13V, (15mA each) for external use.
