SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.

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Chapter 4 Explanation of Functions 4.4 Communication Functions The inverter can engage in RS485 communications with an external control system that is connected to the TM2 terminal block (on the control circuit terminal block board) of the inverter. The <strong>SJ700</strong> series inverter shares the ASCII communication protocol with the SJ300 and L300P series inverters. Related code A001: Frequency source setting A002: Run command source setting C071: Communication speed selection C072: Node allocation C073: Communication data length selection C074: Communication parity selection C075: Communication stop bit selection C078: Communication wait time C079: Communication mode selection (1) Communication specifications Item ASCII mode Modbus-RTU mode Remarks Transmission speed 2,400, 4,800, 9,600, or 19,200 bps Selection with the digital operator Communication method Half-duplex communication Synchronization method Start-stop transmission Asynchronous transmission Transmission code ASCII code Binary code Transmission method Transmission beginning with the lowest-order bit Applicable interface RS485 Data bit length 7 or 8 bits 8 bits Selection with the digital operator Parity No parity, even parity, or odd parity Selection with the digital operator Stop bit length 1 or 2 bits Selection with the digital operator Initiation method Initiation only by a command from the external control system Waiting time 10 to 1,000 ms 0 to 1,000 ms Setting with the digital operator Connection format 1-to-N connection (N: Maximum of 32 [inverters]) Station number to be selected with the digital operator Error check Overrun, framing, BCC, vertical parity, and longitudinal parity errors Overrun, framing, CRC-16, and longitudinal parity errors For the RS485 communication function, use the TM2 terminal block on the control circuit terminal block board. Control circuit block Control circuit block board Abbreviated name of terminal SP SN RP SN Description Positive signal terminal for transmission Negative signal terminal for transmission Terminal to enable the terminating resistor Terminal to enable the terminating resistor Followings are recommended as the wire to connect TM2. Solid-core wire 0.14mm 2 -1.5mm 2 (when two wires are on one terminal pole,0.14 mm 2 -0.5mm 2 ) Standard wire 0.14mm 2 -1.0mm 2 (when two wires are on one terminal pole,0.14 mm 2 -0.2mm 2 ) Standard wire with bar terminal 0.25mm 2 -0.5mm 2 (example:PC-1.25 F-7 made by J.S.T.Mfg.Co.,<strong>Ltd</strong>) Striped covering length 5mm Screw torque 0.22Nm-0.25Nm(screw size M2) 4 - 114
Chapter 4 Explanation of Functions Connection As illustrated below, connect the inverters in parallel to the external control system, and connect the RP and SN terminals with a jumper on the inverter at the end of the network. (Similarly jumper the RP and SN terminals when only one inverter is connected to the external control system for RS485 communication.) Connecting the RP and SN terminals enables the terminating resistor in the control circuit terminal block board of the inverter, which suppresses signal reflections. External control system … SP SN RP SN SP SN RP SN SP SN RP SN (2) Required settings The following table lists the inverter settings required for the RS485 communication: Communication speed selection Item Function code Data or range of data Description 02 Loopback test C071 Node allocation C072 1. to 32. Communication data length selection Communication parity selection Communication stop bit selection Selection of operation after communication error Communication trip limit time setting Communication wait time Communication mode selection C073 C074 C075 C076 C077 C078 C079 03 2,400 bps 04 4,800 bps 05 9,600 bps 06 19,200 bps Assignment of a station number to the inverter (Set this item when your inverter is connected together with other(s) to a control system.) 7 7 bits 8 8 bits 00 No parity 01 Even parity 02 Odd parity 1 1 bit 2 2 bits 00 Tripping 01 Tripping after decelerating and stopping the motor 02 Ignoring the errors 03 Stopping the motor after free-running 04 Decelerating and stopping the motor 0.00 to 99.99 (s) Limit length of time to determine communication train disconnection 0. to 1000. (ms) Time to wait until the inverter returns a response 00 ASCII mode 01 Modbus-RTU mode 4 - 115
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HITACHI INVERTER SJ700-2 SERIES INS
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Safety Instructions Safety Instruct
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Safety Instructions 3. Operation !
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Safety Instructions Precautions Con
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Safety Instructions Precautions Con
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Safety Instructions 10. Distributio
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Contents Chapter 1 Overview 1.1 Ins
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Contents 4.2.30 Overload restrictio
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Contents 4.3.15 Speed/position swit
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Chapter 1 Overview This chapter des
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Chapter 1 Overview 1.2 Method of In
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Chapter 2 Installation and Wiring T
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Chapter 3 Operation This chapter de
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Chapter 3 Operation You can operate
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Chapter 3 Operation 3.2.2 Code disp
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Chapter 3 Operation Key operation a
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Chapter 3 Operation 3.3 How To Make
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Chapter 3 Operation ELB 3-phase pow
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Chapter 4 Explanation of Functions
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Chapter 5 Error Codes 5.1 Error Cod
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Chapter 5 Error Codes Name Gate arr
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Chapter 5 Error Codes 5.1.2 Option
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Chapter 5 Error Codes 3) Error indi
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Chapter 5 Error Codes 5.1.3 Trip co
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Chapter 6 Maintenance and Inspectio
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Chapter 7 Specifications 7.1 Specif
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Chapter 7 Specifications (3) Common
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Chapter 7 Specifications SJ700-150
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Chapter 7 Specifications SJ700-750
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Chapter 8 List of Data Settings 8.1
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Chapter 8 List of Data Settings 8.4
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Chapter 8 List of Data Settings AVR
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Chapter 8 List of Data Settings Oth
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Appendix Upgrading from the SJ300 S
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Index A B C a/b....................
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Index O P O........................
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SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.

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