13/17

Figure 16: GS-D200 Free Air Derating Curve

Figure 17: GS-D200S Free Air Derating Curve

MULTI MODULES APPLICATION

In complex systems, many motors must be control-

led and driven. In such a case more than one

GS-D200 or GS-D200 S must be used.

To avoid chopper frequencies noise and beats, all

the modules should be synchronized.

If all the motors are relatively small, the fast decay

may be used, the chopper frequency does not need

any adjustement and fig. 18 shows how to synchro-

nize several modules.

When at least one motor is relatively large a lower

chopper frequency and a slow decay may be re-

quired: In such a case the overall system chopper

frequency is determined by the largest motor in the

system as shown in fig. 19.

Figure 18: Multimotor Synchronization. Small Motor and Fast Current Decay

Tamb (

°C)

Tamb (

°C)

GS-D200/GS-D200S