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Appendix 6 Instruction Manual for Compliance with UL/c-UL
MITSUBISHI CNC
Appendix 6 - 2
The instructions of UL/c-UL listed products are described in this manual.
The descriptions of this manual are conditions to meet the UL/c-UL standard for the UL/c-UL listed products. To
obtain the best performance, be sure to read this manual carefully before use.
To ensure proper use, be sure to read specification manual, connection manual and maintenance manual
carefully for each product before use.
Appendix 6-1 Operation surrounding air ambient temperature
The recognized operation ambient temperature of each unit are as shown in the table below. The recognized
operation ambient temperatures are the same as an original product specification for all of the units.
Appendix 6-2 Notes for AC servo/spindle system
Appendix 6-2-1 General Precaution
It takes 15 minutes maximum to discharge the bus capacitor. (The capacitor discharge time is one minute for
Models MDS-D-SVJ3-03; two min. for Models MDS-D-SVJ3-04, three min. for Model MDS-D-SVJ3-07, 9
min. for Models MDS-D-SVJ3-10, -20 and -35, 10 min. for Models MDS-D/DH/DM-CV/Vx/SPx.)
When starting wiring or inspection, shut the power off and wait for more than 15 minutes to avoid a hazard of
electrical shock.
Appendix 6-2-2 Installation
MDS-D/DH/DM Series are UL/c-UL listed "open type" drives and must be installed into an end-use electrical
enclosure.
The minimum enclosure size is based on 150 percent of each MDS-D/DH/DM Series combination.
And also, design the enclosure so that the ambient temperature in the enclosure is 55°C (131°F) or less,
refer to the specifications manual.
Appendix 6-2-3 Short-circuit ratings (SCCR)
Suitable for use in a circuit capable of delivering not more than 100kA rms symmetrical amperes, 500 volts
maximum.
Appendix 6-2-4 Peripheral devices
To comply with UL/c-UL Standard, use the peripheral devices which conform to the corresponding standard.
Circuit Protector, Fuses, Magnetic contactor and AC Reactor
Classification Unit name Operation ambient temperature
AC servo/spindle system
Power supply unit, AC Reactor 0 to 55°C
Servo, Spindle drive unit 0 to 55°C
Option unit, Battery unit 0 to 55°C
Servo motor, Spindle motor 0 to 40°C
Applicable power supply unit UL489 Circuit Protector UL Fuse Class K5 Magnetic contactor (AC3) AC Reactor
MDS-D-CV-37 20A 30A S-N12 D-AL-7.5K
MDS-D-CV-75 40A 60A S-N25 D-AL-7.5K
MDS-D-CV-110 60A 70A S-N35 D-AL-11K
MDS-D-CV-185 100A 125A S-N65 D-AL-18.5K
MDS-D-CV-300 150A 200A S-N95 D-AL-30K
MDS-D-CV-370 200A 225A S-N150 D-AL-37K
MDS-D-CV-450 225A 250A S-N300 D-AL-45K
MDS-D-CV-550 300A 400A S-N300 D-AL-55K
MDS-DH-CV-37 10A 10A S-N12 DH-AL-7.5K
MDS-D-HCV-75 20A 25A S-N12 DH-AL-7.5K
MDS-DH-CV-110 30A 35A S-N21 DH-AL-11K
MDS-DH-CV-185 50A 70A S-N25 DH-AL-18.5K
MDS-DH-CV-300 75A 110A S-N50 DH-AL-30K
MDS-DH-CV-370 100A 125A S-N65 DH-AL-37K
MDS-DH-CV-450 125A 150A S-N80 DH-AL-45K
MDS-DH-CV-550 150A 200A S-N95 DH-AL-55K
MDS-DH-CV-750 200A 300A S-N150 DH-AL-75K