Mitsubishi Electric MELSERVO-J4 series, Instruction Manual

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11 OPTIONS AND PERIPHERAL EQUIPMENT
11.13 Relay (recommended)
*1 Use this for grounding.
*2 Maximum dimensions. The dimension varies depending on the input/output lines.
11.13
Relay (recommended)
The following relays should be used with the interfaces.
11.14
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 equipment 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
equipment malfunctions 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.
Noise reduction techniques
■
General reduction techniques
• Avoid bundling power lines (input/output) and signal cables together or running them in parallel to each other. Separate the
power lines from the signal cables.
• Use a shielded twisted pair cable for connection with the encoder and for control signal transmission, and connect the
external conductor of the cable to the SD terminal.
• Ground the servo amplifier, servo motor, etc. together at one point.

Page 126 Grounding
Servo amplifier Power factor
improving
AC reactor Dimensions [mm] Terminal
size Mass [kg]
W W1 H D
*2
D1 D2 d
MR-J4-15KGF4(-RJ) FR-HAL-H22K 220 200 215 170 90 70 M5 M8 9.5
MR-J4-22KGF4(-RJ) FR-HAL-H30K 220 200 215 170 96 75 M5 M8 11
Interface Selection example
Digital input (interface DI-1)
Relay used for digital input command signals To prevent defective contacts, use a relay for small signal (twin contacts).
(Ex.) Omron: type G2A, MY
Digital output (interface DO-1)
Relay used for digital output signals Small relay with 12 V DC or 24 V DC of rated current 40 mA or less
(Ex.) Omron: type MY
D or less
4-d mounting hole
*1
Z Y T R X S
H ± 5
180
W ± 0.5
W1
D1
D2
( ˳ 8 groove)
Y
Z
S
T
MC MCCB
FR-HAL-H
Servo amplifier
3-phase
400 V class
X R
L1
L2
L3
3-phase
380 V AC to
480 V AC