GS-C200 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

GS-C200

INTELLIGENT STEPPER MOTOR CONTROLLERS

STMicroelectronics 

GS-C200 / GS-C200S

GS-C200 AND GS-C200S APPLICATION

THE SEQUENCER-DRIVER INTERFACE

The GS-C is a general purpose stepper motor

controller capable to drive any type of motor, i.e.

two, three and five phases motors, by just interfac-

ing it to the right Sequencer-Driver.

Sometime the available Sequencer-Driver requires

two separate Clock lines, one for each direction,

and this requirement is easily fulfilled by the circuit

of figure 10.

Figure 10. Alternative Sequencer-Driver driving.

PHASE CURRENT PROGRAMMING

As already explained, the possibility to modify the

phase current of a stepper motor according to

different operating conditions, gives substantial im-

provements in term of efficiency and system reliabil-

ity because it minimizes the resonance effects and

the dissipated power.

The phase current programming can be imple-

mented in various modes, either via a software

command by changing the status of the USER

output lines, or by hardware. Of course, the Se-

quencer-Driver must have the current programming

capability. An example of a hardware solution, im-

plemented around a GS-C and GS-D200/200S

module, is shown in fig.11.

The application utilizes the two outputs:

MOV

Movement in execution output

(pin 22)

RAMP Ramp in execution (pin 23)

of the GS-C module and the

Ioset

Current programming input (pin 9)

of the GS-D module.

The phase current has the shape shown in fig.6, i.e.

it is minimized when the motor is stopped, it has its

maximum value during the acceleration/decelera-

tion ramps, and an intermediate value during the

slew phase.

Figure 11. Phase Current Programming of the GS-D200/200S

24/31

Share Link: