GS-D500A datasheet(5/10 Pages) STMICROELECTRONICS

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GS-D500A CONNECTORS PINS DESCRIPTION

CONNECTOR J1

J1-1

Phase A output

J1-2

Phase B output

J1-3

Phase C output

J1-4

Phase D output

J1-6

Ground

CONNECTOR J2

J2-1

Motor Supply Voltage

J2-3

Auxiliary Supply Voltage (+12V)

J2-2,4

Ground

CONNECTOR J3

Function

J3-1

Step clock isolated input (see fig. 3): this

is a logic input that performs the step

function, i.e. on every transition of this

input the motor is moved one step in the

proper direction.

J3-2

Direction isolated input (see fig. 4): the

logic state applied to this pin decides the

rotation direction of the motor shaft.

J3-4

Microsteps/step rate remote program-

ming (SW1).

J3-5

On board +5V output

J3-6,7

Return path for on board +5V output

J3-8

Disable input (see fig. 6): a logic high

level applied to this input causes the

power driver outputs to float. This condi-

tion allows the manual positioning of the

system.

Care must be used when this input is

activated because the detention torque

is lost.

J3-9

Optocoupler supply voltage

J3-10

Zero current control isolated input (see

fig. 5): when activated the phase current

is reduced to zero

J3-12

Microsteps/step rate remote program-

ming (SW2)

J3-13

Fault logic output (see fig. 9): this ouput

is at a low logic level whenever an

anomalous condition is detected.

J3-15

Microsteps/step rate remote program-

ming (SW3)

Figure 3. Stepclock input circuit

Figure 4. Direction input circuit

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GS-D500A

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