User manual MITSUBISHI MDS-DH SPECIFICATIONS MANUAL

[. . . ] MELDAS is a registered trademark of Mitsubishi Electric Corporation. Other company and product names that appear in this manual are trademarks or registered trademarks of their respective companies. Introduction Thank you for selecting the Mitsubishi numerical control unit. This instruction manual describes the handling and caution points for using this AC servo/spindle. Incorrect handling may lead to unforeseen accidents, so always read this instruction manual thoroughly to ensure correct usage. [. . . ] Always install the circuit protectors for each power supply unit. If the control power (L11, L21) must be protected, select according to the section "5-4-1 Circuit protection". 5-5 5. Selection of peripheral devices 5-2-2 Selection of contactor Select the contactor selection current (required free-air thermal current) that is calculated from the rated output and the nominal input voltage to be used (voltage supplied to the power supply unit) as in the expression below. And then select the contactor whose conventional free-air thermal current meets the contactor selection current. Contactor selection current [A] = (Required free-air thermal current) Contactor selection current for 380V input [A] Nominal input voltage to be used [V] × 380 [V] Selection of contactor for 380V input Unit type MDS-DH-CVRated output Contactor selection current for 380V input Recommended contactor (Mitsubishi Electric Corp. : option part) Conventional free-air thermal current of the recommended contactor Option part: A breaker is not prepared as an NC unit accessory, so purchase the part from your dealer, etc. 20A 20A 32A 50A 80A 100A 100A 135A 200A S-N12AC400V S-N12AC400V S-N21AC400V S-N25AC400V S-N50AC400V S-N65AC400V S-N65AC400V S-N80AC400V S-N150AC400V 8A 16A 24A 40A 65A 80A 98A 119A 163A 37 3. 7kW 75 7. 5kW 110 11kW 185 18. 5kW 300 30kW 370 37kW 450 45kW 550 55kW 750 75kW (Example) Select a contactor for using the MDS-DH-CV-450 with a 480V nominal input voltage. Contactor selection current = 98/480 × 380 = 77. 6[A] According to the table above, select "S-N50-AC400V". POINT 1. If the contactor selection current is 20A or less, select the S-N12 product for the contactor. Select a contactor whose excitation coil does not operate at 15mA or less. 5-6 5. Selection of peripheral devices 5-3 Selection of earth leakage breaker When installing an earth leakage breaker, select the breaker on the following basis to prevent the breaker from malfunctioning by the higher frequency earth leakage current generated in the servo or spindle drive unit. (1) Selection Obtaining the earth leakage current for all drive units referring to the following table, select an earth leakage breaker within the "rated non-operation sensitivity current". Usually use an earth leakage breaker for inverter products that function at a leakage current within the commercial frequency range (50 to 60Hz). If a product sensitive to higher frequencies is used, the breaker could malfunction at a level less than the maximum earth leakage current value. Earth leakage current for each unit Unit MDS-DH-SP-20 to 480 MDS-DH-V1-10 to 200 MDS-DH-V2-1010 to 8080 (Note1) (Note2) Earth leakage current 6mA 1mA 1mA Maximum earth leakage current 15mA 2mA 4mA (for two axes) Maximum earth leakage current: Value that considers wiring length and grounding, etc. (Commercial frequency 50/60Hz) The earth leakage current in the power supply unit side is included in the drive unit side. (2) Measurement of earth leakage current When actually measuring the earth leakage current, use a product that is not easily affected by the higher frequency earth leakage current. The measurement range should be 50 to 60Hz. The earth leakage current tends to increase as the motor capacity increases. A higher frequency earth leakage current will always be generated because the inverter circuit in the drive unit switches the transistor at high speed. Always ground to reduce the higher frequency earth leakage current as much as possible. An earth leakage current containing higher frequency may reach approx. According to IEC479-2, this level is not hazardous to the human body. POINT 5-7 5. Selection of peripheral devices 5-4 Branch-circuit protection (for control power supply) 5-4-1 Circuit protection This breaker is used to switch the control power and to provide overload and short-circuit protection. When connecting a circuit protector or breaker to the power input (TE3 terminals L11 and L21) for the control circuit, use a product that does not trip (incorrectly activate) by a rush current when the power is turned ON. A circuit protector with inertial delay and an operation delayed type breaker are available to prevent unnecessary tripping. [. . . ] LTDA. ) ACESSO JOSE SARTORELLI, KM 2. 1 18550-000 BOITUVA ­ SP, BRAZIL TEL: +55-15-3363-9900 FAX: +55-15-3363-9911 ASEAN FA Center (MITSUBISHI ELECTRIC ASIA PTE. LTD. ) Singapore CNC Service Center 307 ALEXANDRA ROAD #05-01/02 MITSUBISHI ELECTRIC BUILDING SINGAPORE 159943 TEL: +65-6473-2308 FAX: +65-6476-7439 Thailand MITSUBISHI CNC Agent Service Center (F. CITY BUILDING OFFICE TOWER 1 FLOOR 12, 14 RAMA III RD BANGPONGPANG, YANNAWA, BANGKOK 10120. THAILAND TEL: +66-2-682-6522 FAX: +66-2-682-6020 Malaysia MITSUBISHI CNC Agent Service Center (FLEXIBLE AUTOMATION SYSTEM SDN. [. . . ]