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Elmo SERVO AMPLIFIER DBP SERIES User Manual

Page 71

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70

DBP - Rev 6/93

AC

AC

AC

+Vs

DC power common is internally

connected to control common

Heatsink

Fuse

Fuse

Fuse

Isolating transformer

NON-ISOLATED DBP

A. External fuses are needed for 3U size only

Guide lines for connecting a non isolated amplifier with an isolating power transformer

Ground:

DC power common

Motor chassis

Amplifier's heat sink

Do not ground:

Control common - It is internally connected to the power common. Grounding the

control common will create a ground loop.

Caution:

- If source of motor command is grounded, use amplifier's differential input.

Otherwise, a ground loop is created.