Intelligent Motion Systems MForce Series Microstepping PowerDrive Logic Interface and Connection

SECTION 2.4

Logic Interface and Connection

Optically Isolated Logic Inputs

The Microstepping MForce PowerDrive has three optically isolated logic inputs which are located on connector P1. These inputs are isolated to minimize or eliminate electrical noise coupled onto the drive control signals. Each input is internally pulled-up to the level of the optocoupler supply and may be connected to sinking or +5 to +24 VDC sourcing outputs on a controller or PLC. These inputs are:

1] Step Clock (SCLK)/Quadrature (CH A)/Clock UP

2] Direction (DIR)/Quadrature (CH B)/ Clock DOWN

3] Enable (EN)

Of these inputs only step clock and direction are required to operate the Microstepping MForce PowerDrive.

Isolated Logic Input Pins and Connections

The following diagram illustrates the pins and connections for the Microstepping MForce PowerDrive family of products. Careful attention should be paid to verify the connections on the model Microstepping MForce Power- Drive you are using.

Isolated Logic Input Characteristics

Enable Input

This input can be used to enable or disable the driver output circuitry. Leaving the enable switch open (Logic HIGH, Disconnected) for sinking or sourcing configuration, the driver outputs will be enabled and the step clock pulses will cause the motor to advance. When this input switch is closed (Logic LOW) in both sinking

Inputs Configured as Sinking

+5 to +24VDC

Pin 3

Inputs Configured as Sourcing

Pin 3

Controller I/O

Ground

Pin 5: Enable Pin 3: Opto Supply

Pin 4: Step/Clock Pin 6: Direction

Figure 2.4.1: Isolated Logic Pins and Connections

Part 2: Interfacing and Configuring 19