Elmo SERVO AMPLIFIER DBP SERIES Manuale Utente

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DBP - Rev 6/93

The DBP series dissipates its heat by natural convection except DBPF types

which are fan cooled. For optimum dissipation the amplifiers have to be mounted

with the fins in vertical position.

Proper wiring, grounding and shielding techniques are important in obtaining

proper servo operation and performance. Incorrect wiring, grounding or

shielding can cause erratic servo performance or even a complete lack of

operation.

a) Keep motor wires as far as possible from the signal level wiring (feedback

signals, control signals, etc.).

b) If additional inductors (chokes) are required, keep the wires between the

amplifier and the chokes as short as possible.

c) Minimize lead lengths as much as is practical. Although the amplifier is

protected against long (inductive) supply wires it is recommended to keep

the leads as short as possible.

d) Use twisted and shielded wires for connecting all signals (command and

feedback). Avoid running these leads in close proximity to power leads or

other sources of EMI noise.

e) Use a 4 wires twisted and shielded cable for the motor connection.

f) Shield must be connected at one end only to avoid ground loops.

g) All grounded components should be tied together at a single point (star

connection). This point should then be tied with a single conductor to an

earth ground point.

h) After wiring is completed, carefully inspect all conditions to ensure

tightness, good solder joint etc.