Parker Hannifin 88-020292-01 A manual AC Drive -DESCRIPTION, DIP Switches, System Components

E-AC DRIVE –DESCRIPTION

The E-AC Drive is a microstepping drive that runs two-phase step motors. It operates directly from 120VAC power; no separate DC power supply or transformer is required.

A typical system is shown below.

To AC

Power Source

Controller

System Components

I/O

DRIVE

SERIES

PWR/FLT

L1

120V

N

MOTOR	A +
	A -
	B +
	B -	Motor
	Compumotor

E-AC Drive

The controller sends step and direction signals to the drive. For each step pulse it receives, the drive will commutate the motor to increment rotor position. This is shown in the next drawing.

				High Level		Step		Motor
Host Computer
				Commands		Pulses		Currents
			or
					Controller		E-AC Drive		Motor
	Programmable
		Controller

Block Diagram of E-AC Drive System

The host computer or programmable controller may or may not be neces- sary, depending upon the controller’s capabilities.

The motor can be wired in series or parallel; the amount of current the drive sends to the motor is set by DIP switches.

DIP SWITCHES

DIP switches are located on top of the E-AC Drive, accessible through an opening in the top of the cover. During the installation procedure, the user sets these DIP switches to configure the drive for motor current, resolution, waveform, and other functions.

CAUTION

Remove power before changing DIP switches

6 E-AC Drive Hardware Installation Guide Chapter 1 – Introduction