Mitsubishi Electric -MR-CV User Manual page 39

■400 V class
MCCB
3-phase
380 V AC to
480 V AC
50/60 Hz
*1 Use the magnetic contactor with an operation delay time (interval between current being applied to the coil until closure of contacts) of
80 ms or less. The bus voltage may drop depending on the main circuit power supply voltage and operation pattern, causing a dynamic
brake deceleration during a forced stop deceleration.
*2 Configure a sequence that shuts off the main circuit power supply when an alarm occurs on a drive unit.
*3 Install an overcurrent protection device (molded-case circuit breaker, fuse, etc.) to protect the branch circuit.
Page 93 Molded-case circuit breakers, fuses, magnetic contactors
*4 For wire size and overcurrent protection device selection, refer to the following.
Page 89 Selection example of wires
Converter unit
*2
Drive unit error alarm output
RA1
AC reactor MR-CV_
*1
MC
L1
L2
L3
CN25
B B
RA1
C C
24 V DC
*3*4
L11
L21
Ready for
Emergency
operation
stop switch
off/on
L+
To the drive unit
L-
Protection
coordination
CN4
cable
To the drive unit
5.1 Example power circuit connections
MC
SK
5 SIGNALS AND WIRING
5
37