Surrounding Environment - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

■When you use a brake unit and power regeneration converter for 5 kW or more servo
amplifiers
• For 5 kW or 7 kW servo amplifiers, the lead wire of the built-in regenerative resistor connected to P+ terminal and C
terminal should not be connected.
• Wires of a brake unit or power regeneration converter should be connected to P+ terminal and N- terminal. Page 353
FR-BU2-(H) brake unitPage 366 FR-RC-(H) power regeneration converter
• Twisted wires should be used when wiring is over 5 m and equal to or less than 10 m using a brake unit. Page 353 FR-
BU2-(H) brake unit
■When you use a power regeneration common converter for 11 kW or more servo amplifiers
• Power regeneration common converter should be connected to P4 terminal and N- terminal. Page 370 FR-CV-(H)
power regeneration common converter
■When you use a power factor improving DC reactor
• The power factor improving DC reactor should be connected between P3 and P4. Page 407 Power factor improving
DC reactors
Power factor improving
DC reactor
*1
*1 Always disconnect between P3 and P4.
When you use an option and peripheral equipment (100 V class)
■When you use a regenerative option
• The lead wire between P+ terminal and D terminal should not be connected.
• The regenerative option should be connected to P+ terminal and C terminal.
• Twisted wires should be used.
Page 341 Connection of regenerative option
I/O signal
• The I/O signals should be connected correctly. Use DO forced output to forcibly turn on/off the pins of the CN3 connector.
You can use the function to check the wiring. In this case, switch on the control circuit power supply only. Refer to the
following for details of I/O signal connection.
Page 95 I/O signal connection example
• 24 V DC or higher voltage is not applied to the pins of the CN3 connector.
• Plate and DOCOM of the CN3 connector is not shorted.
Servo amplifier
CN3
DOCOM
Plate

Surrounding environment

Cable routing
• The wiring cables should not be stressed.
• The encoder cable should not be used in excess of its bending life. Page 324 Cable bending life
• The connector of the servo motor should not be stressed.
Environment
Signal cables and power cables are not shorted by wire offcuts, metallic dust or the like.
4 STARTUP
130
4.1 Switching power on for the first time
Servo amplifier
P3
P4