Elmo DBP SERIES 用户手册

24

DBP - Rev 6/93

A shunt regulator is included in the power supply section of the DBP. The

shunt regulator is a switching type, wherein dissipative elements (resistors)

are switched across the DC bus, whenever the voltage reaches a predetermined

level (Vr). The function of the shunt regulator is to regulate the voltage of

the DC bus during the period of motor deceleration, when there is a net energy

outflow from the motor to the amplifier. The amplifier handles this reverse

energy just as efficiently as it provides energy to the motor, hence, most of

the energy is passed through the amplifier to the power supply, where the

returning energy charges the filter capacitors above their normal voltage

level, as determined by the AC incoming voltage.

When the capacitors charge-up reaches the predetermined voltage level (Vr),

the shunt regulator begins its regulating action. The bus is regulated to this

range until regeneration ceases.

All the double Eurocard size amplifiers are equipped with two outputs for

connecting an external shunt resistor , hence increasing the power dissipation

capability.

Type

Reg.

Voltage

(Vr)

Internal

Reg.

Current (A)

External Reg.

Current (A)

DBP-12/135

193

13

N/A

DBP-20/135

193

26

21

DBP-8/270

383

 8

N/A

DBP-16/270

383

16

12

DBPF-12/135

193

13

N/A

DBPF-20/135

193

26

N/A

DBPF-30/135

193

26

21

DBPF-8/270

383

 8

N/A

DBPF-16/270

383

16

12

DBPF-24/270

383

16

12