Mitsubishi Electric MR-J2-03B5, Инструкция по эксплуатации

Страница: 106 / 113

11 - 15
11. OPTIONS AND AUXILIARY EQUIPMENT
11.2.2 Circuit protector
Servo amplifier Circuit protector
MR-J2-03B5
(Note)
CP-30BA 1P 1-M5A
Note: Use the operation characteristic of "mid-speed type".
11.2.3 Relays
The following relays should be used with the interfaces:
Interface Selection example
Relay used for open and close of digital input command
(interface DI-1) signals To prevent defective contacts , use a relay for small signal
(twin contacts).
(Ex.) Omron : type G2A , MY
11.2.4 Noise reduction techniques
Noises are classified into external noises which enter the servo amplifier to cause it to malfunction and
those radiated by the servo amplifier to cause peripheral devices to malfunction. Since the servo amplifier
is an electronic device which handles small signals, the following general noise reduction techniques are
required.
Also, the servo amplifier can be a source of noise as its outputs are chopped by high carrier frequencies. If
peripheral devices malfunction due to noises produced by the servo amplifier, noise suppression measures
must be taken. The measures will vary slightly with the routes of noise transmission.
(1) Noise reduction techniques
(a) General reduction techniques
Avoid laying power lines (input and output cables) and signal cables side by side or do not bundle
them together. Separate power lines from signal cables.
Use shielded, twisted pair cables for connection with the encoder and for control signal
transmission, and connect the shield to the SD terminal.
Ground the servo amplifier, servo motor, etc. together at one point (refer to Section 3.7).