Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 439

■400 V class
ALM
RA1
Emergency
stop switch
Step-down
transformer
MCCB
Power
*3
supply
*11
*11
RA2
Dynamic brake
interlock
*1 Terminals 13 and 14 are normally open contact outputs. If the external dynamic brake is seized, terminals 13 and 14 will open.
Therefore, configure an external sequence to prevent servo-on.
*2 Assign DB (Dynamic brake interlock) in [Pr. PD07] to [Pr. PD09].
*3 For power supply specifications, refer to the following.
Page 30 Servo amplifier standard specifications
*4 Depending on the main circuit voltage and operation pattern, bus voltage decreases, and that may cause the forced stop deceleration to
shift to the dynamic brake deceleration. When dynamic brake deceleration is not required, slow the time to turn off the magnetic
contactor.
*5 Turn off EM2 when the main power circuit power supply is off.
*6 The illustration of the 24 V DC power supply is divided between input signal and output signal for convenience. However, they can be
configured by one.
*7 Between P3 and P4 is connected by default. When using the power factor improving DC reactor, remove the short bar between P3 and
P4. Additionally, a power factor improving DC reactor and power factor improving AC reactor cannot be used together.
Page 407 Power factor improving DC reactors
*8 Stepdown transformer is required when the coil voltage of the magnetic contactor is 200 V class.
*9 The power supply voltage of the inside magnet contactor for 400 V class external dynamic brake DBU-11K-4 and DBU-22K-4 is
restricted as follows. When using these external dynamic brakes, use them within the following range of the power supply.
External dynamic brake
DBU-11K-4
DBU-22K-4
*10 The external dynamic brake cannot be used for compliance with SEMI-F47 standard. Do not assign DB (Dynamic brake interlock) in [Pr.
PD07] to [Pr. PD09]. Failure to do so will cause the servo amplifier to become servo-off when an instantaneous power failure occurs.
*11 Install an overcurrent protection device (molded-case circuit breaker, fuse, or others) to protect the branch circuit.
Page 404 Molded-case circuit breakers, fuses, magnetic contactors
Page 435 Selection of external dynamic brake
Operation ready
OFF ON
MC
MC
SK
*8
*4
MC
*7
Main circuit
power supply *5
EM2
DICOM
*6
24 V DC
DICOM
Servo amplifier
U
V
W
L1
L2
CN3
24 V DC
L3
3
DOCOM
L11
15 ALM
L21
P3
DB
*2*10
P4
CN3
20
5
10
*1
14
*9
a
b
External dynamic brake
Power supply voltage
1-phase 380 V AC to 463 V AC, 50 Hz/60 Hz
11 OPTIONS AND PERIPHERAL EQUIPMENT
Servo motor
U
V
M
W
E
*6
RA1
RA2
13 U V W
11.17 External dynamic brake
11
437