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9 Power Backup System
MITSUBISHI CNC
(1) Connection of Regenerative Resistor Unit
Connect the PFU connection terminal R1/R2 of the regenerative resistor for external option power backup unit
between the regenerative resistor connection terminals R1 and R2 in TE5.
The regenerative resistor generates heats, so wire and install the unit while taking care to safety. When using the
regenerative resistor, make sure that flammable matters, such as cables, do not contact the resistor, and provide a
cover on the machine so that dust or oil does not accumulate on the resistor and ignite.
9.1.3 Setup of Deceleration and Stop Function at Power Failure
(1) Setting the rotary switch (SW1)
Set the rotary switch (SW1) of MDS-D/DH-PFU depending on the regenerative resistor to be used.
• MDS-D-PFU
Rotary switch (SW1) setting : 2 R-UNIT-7 is connected
• MDS-DH-PFU
Rotary switch (SW1) setting : 1 R-UNIT-6 is connected
(2) Setting the dip switches (SW2, SW3)
Normally all OFF.
CAUTION
1. Make sure to install the regenerative resistor for external option power backup unit to enable the deceleration and stop
function at power failure.
2. Only the designated combination can be used for the external option regenerative resistor and drive unit. There is a risk
of fire, so always use the designated combination.
CAUTION
Refer to "9.3.1 How to Set Rotary Switch and Dip Switches" for detail specifications on the rotary switch (SW1) and dip
switches (SW2, SW3) of MDS-D/DH-PFU.
TE5
R2
R1
R2
R1
AL1
AL2
CN43
10A
10B
E
MDS-D/DH-PFU
R-UNIT
5.5mm
2
Available wire size 0.2mm
2
Available wire size
5m or less
Twist or bind with a cable tie