1-2 Introduction
P/N 0013-1025-001 Rev F
Functional Description
The Electro-Craft MAX-430 is a controllable power source for brushtype, DC servo motors.
Usually configured as a controlled velocity system, the drive interfaces with a controller which
provides an analog voltage signal proportional to the desired motor velocity. The MAX-430
drive can also operate in torque mode (or current mode), such that a controller provides an
analog voltage signal proportional to the desired motor torque. Refer to the “System Functional
Diagram” shown below. The MAX-430 drive contains circuitry for protection of both motor and
drive from effects of various overload and short circuit conditions. The command signal to the
power drive can be monitored at the ICMD output. The MAX-430 is a 16 kHz pulse-width
modulation (PWM), switching type drive that reduces system power losses. Motor speed is
precisely controlled down to a maximum torque, low velocity condition.
Intro
F
IGURE
1.1
System Functional Diagram
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