Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 359

■When connecting two brake units to a servo amplifier
• To use brake units with a parallel connection, use two sets of FR-BU2 brake unit. Combination with other
brake unit results in alarm occurrence or malfunction.
• Always connect the terminals for master/slave (MSG to MSG, SD to SD) between the two brake units.
• Do not connect the servo amplifier and brake units as below. Connect the cables with a terminal block to
distribute as indicated in this section.
Servo amplifier
Brake unit
P+ P/+
N- N/-
Brake unit
P/+
N/-
Connecting two cables to
P+ and N- terminals
Servo amplifier Brake unit
P+ P/+
N- N/-
Brake unit
P/+
N/-
Passing wiring
11 OPTIONS AND PERIPHERAL EQUIPMENT
11.3 FR-BU2-(H) brake unit
11
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