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Inovance SV670N Series Hardware Manual

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  • Page 2: Preface

    Introduction Thank you for purchasing the SV670N series servo drive developed by Inovance. The SV670N series servo drive is a high‑end servo drive designed based on global‑ leading standards and high‑end application needs. It is featured with high speed, high precision, high performance, and tuning‑free Function.
  • Page 3 Provides instructions on maintenance SV670N Series Servo Drive 19011864 and repair of the equipment. Maintenance Guide Presents the safety function and related SV670N Series Servo Drive Safety certifications and standards, wiring, 19011861 Guide commissioning process, troubleshooting, and functions. Provides information on selection,...
  • Page 4 Preface http://www.inovance.com ● Scan the QR code on the equipment to acquire more. ● ‑3‑...

  • Page 5: Table Of Contents

    Table of Contents T T a a b b l l e e o o f f C C o o n n t t e e n n t t s s Preface ................1 General Safety Instructions .
  • Page 6 Table of Contents 3.4 Description of Communication Terminals (CN3/CN4) ......56 3.5 Description of Communication Terminal (CN5) ....... . . 59 3.6 CN6 STO safety Terminal.

  • Page 7: General Safety Instructions

    Use this equipment according to the designated environment requirements. ● Damage caused by improper use is not covered by warranty. Inovance shall take no responsibility for any personal injuries or property damage ● caused by improper use. Safety Levels and Definitions Indicates that failure to comply with the notice will result in death or severe personal injuries.
  • Page 8 General Safety Instructions Unpacking Do not install the equipment if you find damage, rust, or signs of use on the equipment ● or accessories upon unpacking. Do not install the equipment if you find water seepage or missing or damaged ●...
  • Page 9 General Safety Instructions Handle the equipment with care during transportation and mind your steps to prevent ● personal injuries or equipment damage. When carrying the equipment with bare hands, hold the equipment casing firmly with ● care to prevent parts from falling. Failure to comply may result in personal injuries. Store and transport the equipment based on the storage and transportation ●...
  • Page 10 General Safety Instructions Cover the top of the equipment with a piece of cloth or paper during installation. This is ● to prevent unwanted objects such as metal chippings, oil, and water from falling into the equipment and causing faults. After installation, remove the cloth or paper on the top of the equipment to prevent over‑temperature caused by poor ventilation due to blocked ventilation holes.
  • Page 11 General Safety Instructions Before power‑on, check that the equipment is installed properly with reliable wiring and ● the motor can be restarted. Check that the power supply meets equipment requirements before power‑on to ● prevent equipment damage or a fire. After power‑on, do not open the cabinet door or protective cover of the equipment, ●...
  • Page 12 General Safety Instructions Perform routine and periodic inspection and maintenance on the equipment according ● to maintenance requirements and keep a maintenance record. Repair Equipment installation, wiring, maintenance, inspection, or parts replacement must be ● performed only by professionals. Do not repair the equipment with power ON. Failure to comply will result in an electric ●...
  • Page 13 General Safety Instructions Dynamic braking is common in rotating mechanical structures. For example, when ● a motor has stopped running, it keeps rotating due to the inertia of its load. In this case, this motor is in the regenerative state and short‑circuit current passes through the dynamic brake.

  • Page 14: System Structure

    System structure System structure System Connection Diagram Figure 1‑1 Example wiring of a single‑phase 220 V system ‑13‑...

  • Page 15: System Composition

    System structure Figure 1‑2 Example wiring of a three‑phase 220 V or 380 V system Note CN6 (STO terminal) is only applicable to customized model ‑FS. System Composition The servo drive is directly connected to an industrial power supply, with no ●...
  • Page 16 System structure Do not start or stop the motor by using the electromagnetic contactor. As a high‑ ● inductance device, the motor may generate high voltages instantaneously, which may break down the contactor. When connecting an external power supply to the control circuit or a 24 VDC ●...

  • Page 17: Electrical Design Guide

    Electrical Design Guide Electrical Design Guide Design of Periphery Electrical Devices Installing a circuit breaker Note For UL‑compliant products, see section " 4.2 UL/cUL Certification " on page 73 for recom‑ mended fuse/circuit breaker models. If a residual current device (RCD) is needed, select the RCD according to the following requirements: Use a B‑type RCD because the drive may generate DC leakage current in the ●...
  • Page 18 Electrical Design Guide Installing an AC input reactor An AC input reactor is installed to eliminate the harmonics of the input current. As an optional device, the reactor can be installed externally to meet strict requirements of an application environment for harmonics. The following figure shows the connection of the AC input reactor.
  • Page 19 Electrical Design Guide Figure 2‑2 Connection of the EMC filter Installing a magnetic ring and a magnetic buckle The drive generates very strong interference during operation. The drive may interfere with or be interfered with by other devices due to improper routing or grounding. Wind the drive output U/V/W cable onto a magnetic ring for two to four turns.
  • Page 20 Electrical Design Guide Figure 2‑3 Connection of the magnetic ring Figure 2‑4 Connection of the magnetic buckle Installing a braking resistor When the motor torque direction is opposite to the direction of rotation, the energy is fed back to the servo drive from the motor side, leading to bus voltage rise. Once the bus voltage rises to the braking threshold, the excessive energy must be consumed by a regenerative resistor.
  • Page 21 Electrical Design Guide Figure 2‑5 Wiring of external regenerative resistor For cables used for terminals P⊕ and C, see " 2.2.1.3 Power Cable Specifications " on page 24 Observe the following precautions when connecting the external regenerative resistor: The built‑in regenerative resistor or jumper bar is not available in models S1R6 ●...

  • Page 22: Power Cable Selection

    Electrical Design Guide Power Cable Selection 2.2.1 Power Supply Cable 2.2.1.1 Rules Read the section Rules carefully. Failure to comply may result in serious consequences. Do not use the power from IT system for the drive. Use the power from TN/TT ●...

  • Page 23: Power Cable Types

    Electrical Design Guide Observe the following requirements during wiring of the power supply and main ● circuit: When the main circuit terminal is a connector, remove the connector from the — — servo drive before wiring. Insert one cable into one cable terminal of the connector. Do not insert —...
  • Page 24 Electrical Design Guide Table 2–1 Reduction coefficient of conductor current‑carrying density Number of Cables in the Same Duct Current Reduction Coefficient ＜ 3 0.63 5–6 0.56 7–15 0.49 Do not bundle power cables and signal cables together or route them through the ●...

  • Page 25: Power Cable Specifications

    Electrical Design Guide 2.2.1.3 Power Cable Specifications Table 2–2 Input/Output current specifications of the servo drive Maximum Output Current Rated Input Current Rated output current (A) Servo drive model SV670****I Single‑phase 220 V S1R6 Size A S2R8 10.1 S5R5 16.9 Size C S7R6 23.0...
  • Page 26 Electrical Design Guide L1, L2, L3/R, P⊕, D, C, NΘ, Servo drive model L1C, L2C U, V, W, PE Grounding terminal S, T N2, N1 SV670****I Rated Size Model Input Current Size S012 12.8 3 x 2.08 2.08 0.82 2.08 2.08 Three‑phase 220 V S1R6...
  • Page 27 Electrical Design Guide Note [1]: For MS1H1‑10C30CB motors. ● [2]: For MS1H2‑10C30CB/MS1H3‑85B15CB motors. ● [3]: For MS1H2‑40C30CD/MS1H2‑50C30CD motors. ● [4]: For MS1H3‑44C15CD motors. ● Table 2–4 Recommended Cable Specifications and Models Cable Type Cable Size (mm) 4×12AWG 12.2±0.4 4×14AWG 10.5±0.3 Power cable 4×16AWG 9.5±0.4...
  • Page 28 Electrical Design Guide Recommended PVC Cable Model (at 40℃) Servo drive model SV670****I Recommended Rated Input Recommended Tightening Model of Model of Brake Current U, V, W, PE Torque Size Model Grounding Cable Cable Lug (N·m) S1R6 ‑ Size A S2R8 ‑...
  • Page 29 Electrical Design Guide MS1H1/H4 05B–10C (Applicable to 0.5 kW–1 kW) φ6.5±0.2mm Sheath diameter Internal structure and conductor colors Fill in "X.X" in the model number with cable length. Table 2–8 Specifications of motor output cables MS1H2 10C–50C (Applicable to 1 kW–5 kW)/MS1H3 85B–18C (Applicable to 850 W–1.8 kW) Oil‑resistant shielded flexible Cable type Regular cable...

  • Page 30: Power Cable Shield

    Electrical Design Guide MS1H3 29C–75C (Applicable to 2.9 kW–7.5 kW) UL2586 (rated temperature: UL2586 (rated temperature: UL2586 (rated temperature: 105℃) 4Ex12AWG, 2Cx18AWG 105℃) 4Ex12AWG, 2Cx18AWG 105℃) 4Ex12AWG, 2Cx18AWG Power cable: 12AWG (3.31 Power cable: 12AWG (3.31 Power cable: 12AWG (3.31 Cable specifications ) OD of insulation: 4.1 mm ) OD of insulation: 4.2 mm...

  • Page 31: Power Cable Types

    Electrical Design Guide 2.2.2.2 Power Cable Types For details, see " 2.2.1.2 Power Cable Types " on page 22 2.2.2.3 Power Cable Specifications For details, see " 2.2.1.3 Power Cable Specifications " on page 24 2.2.2.4 Power Cable Shield Take proper shielding measures in the following locations to prevent equipment damage: Locations with interference caused by static electricity ●...

  • Page 32: Encoder Cable

    Electrical Design Guide Figure 2‑8 Lead‑out of the motor cable shield 2.2.3 Encoder Cable 2.2.3.1 Rules Ground the shielded layers on both the servo drive side and the motor side. ● Otherwise, the servo drive will report a false alarm. Do not connect cables to the "reserved"...

  • Page 33: Control Cable Selection

    Electrical Design Guide Note If the cables of above 16AWG are required, contact the sales personnel of Inovance. Control Cable Selection 2.3.1 Rules Observe the following requirement during control circuit wiring: When connecting DO terminals to relays, ensure the polarity of the flywheel diode ●...

  • Page 34: Communication Cable Selection

    Electrical Design Guide Figure 2‑9 Diagram of shielded twisted pairs Communication Cable Selection Rules EtherCAT cables are connected to the network ports (OUT and IN) equipped with metal shield. The electrical characteristics comply with standards IEEE 802.3 and ISO 8877. Communication cable specifications Table 2–11 Specifications Description...

  • Page 35: Routing Recommendations

    ● on or off frequently within 1s, E740.0/E136.0/E430.0 may occur (see section Description of Error Codes in SV670N Series Servo Drive Troubleshooting Guide). In this case, power on the servo drive again after waiting for the specified ON/OFF interval. If frequent ON/OFF operation is needed, the time interval between ON and OFF must be at least 1 min.

  • Page 36: Grounding And Wiring

    Electrical Design Guide be properly connected to systems (machines or devices), with spraying protection applied at the installation part and the conductive metal kept in full contact. Figure 2‑10 Cable layout Wiring requirements Terminals P⊕, C, and NΘ are used to connect optional parts. Do not connect these ●...
  • Page 37 Electrical Design Guide To prevent electric shocks, ground the grounding terminal properly. Observe ● related national or regional regulations during grounding. To prevent electric shocks, ensure the protective grounding conductor complies ● with technical specifications and local safety standards. Keep the length of the grounding cable as short as possible.
  • Page 38 Electrical Design Guide It is recommended to install the drive to a conductive metal surface. Ensure the ● whole conductive bottom of the drive is connected properly to the mounting face. Tighten the grounding screw with specified tightening torque to prevent the ●...
  • Page 39 Electrical Design Guide Table 2–13 Description for grounding of multiple drives installed side by side Description Connect the motor output cable shield to the output PE terminal of the ① servo drive. Connect the main circuit input PE terminal of the servo drive to the grounding copper busbar of the control cabinet through a protective ②...
  • Page 40 Electrical Design Guide Table 2–14 Wiring requirements Wiring requirements Place the control unit and the drive unit in two separate control cabinets. If multiple control cabinets are used, connect the control cabinets by using a PE cable with a cross‑sectional area of at least 16 mm equipotentiality between the control cabinets.

  • Page 41: Terminals

    Terminals Terminals Figure 3‑1 Terminal pin layout of the servo drive For pin assignment of the main circuit terminal, see " 3.1 Pin Assignment of Main Circuit Terminal " on page 40 Pin Assignment of Main Circuit Terminal Terminal Layout Servo drives in size A/C/D (rated power: 0.2 kW to 1.5 kW): SV670NS1R6I, ●...
  • Page 42 Terminals Figure 3‑2 Main circuit terminal pin layout of servo drives in size A/C/D Table 3–1 Description of main circuit terminal pins of servo drives in size A/C/D Description Name L1C, L2C (control circuit power input See the nameplate for the rated voltage class. terminals) L1, L2, L3 (main circuit Power input terminals of the servo drive.
  • Page 43 Terminals Servo drives in size E (rated power: 2.0 kW to 7.5 kW): SV670NS018I, ● SV670NS022I, SV670NS027I, SV670NT017I, SV670NT021I, and SV670NT026I Figure 3‑3 Main circuit terminal pin layout of servo drives in size E Table 3–2 Description of main circuit terminal pins of servo drives in size E Description Name L1C, L2C (control...
  • Page 44 Terminals Terminal descriptions Figure 3‑4 Wiring between the servo drive and terminal‑type motor Table 3–3 Description of the power cable connector (motor side) for terminal‑type motors Terminal Pin Layout Outline Drawing of the Flange Size Signal Name Connector Pin No. Color Yellow/ Green...
  • Page 45 ● Power cable colors are subject to the actual product. All cable colors mentioned in ● this guide refer to Inovance cable colors. Table 3–4 Description of the flying leads power cable connector (motor side) Terminal Pin Layout Outline Drawing of the...

  • Page 46: Description Of Control Terminal (Cn1)

    [1] The flange size refers to the width of the mounting flange. ● Power cable colors are subject to the actual product. All cable colors mentioned in ● this guide refer to Inovance cable colors. Description of Control Terminal (CN1) 3.2.1 Terminal Layout Figure 3‑5 Control terminal pin layout (CN1) Note Use shielded cables as signal cables, with both ends of the shielded cable grounded.

  • Page 47: Di/Do Signals

    Terminals Table 3–7 Pin assignment Signal Name Default Function Pin No. Function P‑OT Positive limit switch Negative limit switch N‑OT HomeSwitch Home switch Emergency Stop Emergency stop Touch probe 1 TouchProbe1 COM+ Common terminal of DI terminals. +24 V Internal 24 V power supply; voltage range: 20 V to 28 V;...
  • Page 48 Terminals When the external power supply is used: ■ The host controller provides open‑collector output. ● For use of the internal 24 V power supply of the servo drive: ■ When the external power supply is used: ■ ‑47‑...
  • Page 49 Terminals Note PNP and NPN input cannot be applied in the same circuit. DO circuit The circuits for DO1 to DO2 are the same. The following takes the DO1 circuit as an example. When the host controller provides relay input: ●...
  • Page 50 Terminals Note When the host controller provides relay input, a flywheeling diode must be installed. Other‑ wise, the DO may be damaged. The host controller provides optocoupler input. ● Note The maximum allowable voltage and current of the optocoupler output circuit in the servo drive are as follows: Maximum voltage: 30 VDC ●...

  • Page 51: Encoder Frequency-Division Output Signals

    Terminals 3.2.3 Encoder Frequency-Division Output Signals The encoder phase Z frequency‑division output circuit supports open‑collector signal output. Typically, this circuit provides feedback signals to the host controller in a position control system. Use an optocoupler circuit, relay circuit, or bus receiver circuit on the host controller side to receive feedback signals.
  • Page 52 When determining the length of the motor brake cable, take full account the voltage drop caused by cable resistance. The input voltage must be at least 21.6 V to enable the brake to work properly. The following table lists brake specifications of Inovance MS1 series servo motors.

  • Page 53: Description Of Encoder Terminal (Cn2)

    Terminals Table 3–8 Brake specifications Supply Holding Exciting Coil Resistance Release Time Apply Time Backlash Voltage Torque Current Motor Model (Ω)±7% (ms) (ms) (°) (VDC) (N·m) ±10% MS1H1‑05B/10B 0.32 94.4 0.25 ≤ 20 ≤ 40 ≤ 1.5 MS1H1‑20B/40B 75.79 0.32 ≤...
  • Page 54 [1] The preceding figure shows the wiring of a 23‑bit multi‑turn absolute encoder. ● The encoder cable color is subject to the color of the actual product. Cable colors ● mentioned in this guide all refer to Inovance cables. Lead wires of the battery box: ‑53‑...
  • Page 55 Terminals Figure 3‑10 Description of the lead wire color of the battery box Note Keep the battery in environments within the required ambient temperature range ● and ensure the battery is in reliable contact and carries sufficient power capacity. Otherwise, encoder data loss may occur. Model of the battery box (battery included): S6‑C4A ●...
  • Page 56 Terminals Note [1] The flange size refers to the width of the mounting flange. Table 3–11 Encoder cable connector of lead‑type motors Terminal Pin Layout Applicable Outline Drawing of the Connector Motor Flange Signal Type Pin No. Color Size Name +5 V Twisted pair...

  • Page 57: Description Of Communication Terminals (Cn3/Cn4)

    Terminals Table 3–12 Encoder cable connector of motors Terminal Pin Layout Applicable Outline Drawing of the Connector Motor Flange Signal Type Pin No. Color Size Name +5 V Twisted pair Orange Blue Twisted pair Purple PS– drive side Enclosure ‑ ‑...
  • Page 58 Terminals Table 3–13 EtherCAT communication terminal pins Description Name Pin No. Transmit data (+) Transmit data (‑) TD‑ Receive data (+) ‑ ‑ 4 and 5 Receive data (‑) RD‑ ‑ ‑ 7 and 8 Transmit data (+) Transmit data (‑) TD‑...
  • Page 59 0.2 m to 10 communication cable " on page 58 The cable price is added by RMB 5 for every Inovance, Haituo and others additional 1 m based on the price of S6‑L‑ More than T04‑10.0. The cable price is also related to 10 m the magnitude of the order.

  • Page 60: Description Of Communication Terminal (Cn5)

    Terminals Description of Communication Terminal (CN5) Terminal Layout Table 3–16 Pin Description of Communication Terminals (CN5) Description Description Pin No. Ground USB power supply VBUS ‑ ‑ Differential data transmission Differential data transmission ‑ ‑ USB power supply VBUS Ground Terminal descriptions This terminal is a commissioning port connected with the PC.

  • Page 61: Cn6 Sto Safety Terminal

    Terminals Note Supports online upgrade and background commissioning when the drive is ● powered on. In USB mode, the terminal only supports download and upload of parameters, ● and driver firmware update. The terminal uses USB power supply. If there is a fault that cannot be completely ●...
  • Page 62 Terminals To facilitate commissioning, additional pin with supply voltage (+24V) is integrated. The bridging of the 24 V terminal to STO1/STO2 is needed in case the safety circuit is installed but no STO function is needed. Terminal descriptions Electrical specifications and connections of input circuit ●...
  • Page 63 Terminals Connection example of internal 24 V ■ EMC requirements ● To avoid short circuit between two adjacent conductors, either use cable with ■ shield connected to the protective bonding circuit on each separate conductor, or use flat cables with one earthed conductor between each signal conductor. Double‑shielded or single‑shielded twisted multi‑pair cable is strongly ■...

  • Page 64: Description Of The 2Nd Encoder Terminal (Cn7)

    Terminals Description Cable 0.3 mm (28 AWG) Minimum size The max. distance between STO input and the Maximum length operating contact is 30 m Applicable servo drives STO applies to the following ‑FS servo drives: Power Range W×H×D (mm Size Structure Split‑type structure 40 x 170 x 150...
  • Page 65 Terminals Descrip Descrip Description Description tion tion Encoder pulse phase B input‑/phase B B‑/PBO‑ ‑ ‑ frequency‑division output signal PBO‑ Analog output ‑ ‑ Encoder pulse phase Z input+/phase Z 5 V power supply (load Z+/PZO+ +5 V frequency‑division current lower than 200 mA) output signal PZO+ Encoder pulse phase Z input‑/phase Z...
  • Page 66 Terminals To reduce noise interference, connect the reference ground of the external ■ encoder to the GND of the drive. Use shielded cables and connect the shield to the CN7 terminal enclosure. The input mode of the external encoder is differential input. ■...
  • Page 67 Terminals Figure 3‑14 Figure 3‑15 Analog input signal ● The input terminal for analog speed and torque signals is AI1. ‑ ‑...
  • Page 68 Terminals AI1 is a voltage‑type analog input terminal with a resolution of 12 bits. The voltage value is set in group H03. Voltage‑type input specification: –10 V to +10 V; maximum permissible voltage: ■ ±12 V Input impedance: 10 kΩ ■...

  • Page 69: Wiring Of The External Regenerative Resistor

    Terminals Ω/km Allowable Length (m) Cable Size 23 AWG (0.26 mm 68.5 18.0 22 AWG (0.32 mm 54.3 23.0 21 AWG (0.41 mm 42.7 29.0 Suppose the current consumed by the motor encoder is higher than 200 mA, you can select the cable based on the following formula. Where, △U is 0.5 V, I represents the current consumed by the encoder (see the encoder...
  • Page 70 Terminals Observe the following precautions when connecting the external regenerative resistor: The built‑in regenerative resistor or jumper bar is not available in models S1R6 ● and S2R8. If an external regenerative resistor is needed for these models, connect it between terminals P⊕ and C. Remove the jumper between terminals P⊕...

  • Page 71: Certification And Standard Requirements

    Certification and Standard Requirements Certification and Standard Requirements CE Certification Command Standard EN 61800‑3 Servo drive EMC directive EN 61800‑6‑2 2014/30/EU EN 61800‑6‑4 Servo Motor EN 55011 Low Voltage Servo drive EN 61800‑5‑1 Directive EN 60034‑1 Servo Motor 2014/35/EU EN 60034‑5 RoHS Servo drive EN 50581...

  • Page 72: Requirements For Compliance With Emc

    Certification and Standard Requirements The CE mark is required for engaging in commercial business (production, ● importation, and distribution) in Europe. The drive complies with LVD, EMC, and RoHS directives and carries the CE mark. ● Machines and devices integrated with this drive must also comply with CE ●...

  • Page 73: Requirements For Compliance With Lvd

    Install the drive in a place with overvoltage category III and pollution degree 1 or 2 as specified by EN61800‑5‑1. Installation environment For requirements of the installation environment, see SV670N Series Servo Drive Installation Guide. Protective Requirements of Installation The drive must be installed in a fireproof cabinet with doors that provide effective electrical and mechanical protection.

  • Page 74: Ul/Cul Certification

    Installation requirements Installation requirements for open‑type drives: SV670N series servo drives are open‑type drives that must be installed in a fireproof cabinet with the housing that provides effective electrical and mechanical protection. The installation must conform to local laws and regulations and related NEC requirements.
  • Page 75 PVC cable with continuous maximum allowable temperature of 75 ° C. The following conditions are used as premises: Ambient temperature: ＜ 40°C. ■ Normal operating ratings ■ If the recommended cable specifications for peripheral devices or optional parts exceed the applicable cable specification range, contact Inovance. ‑ ‑...
  • Page 76 Certification and Standard Requirements Cable selection To comply with UL61800‑5‑1 and CSA C22.2 No. 274‑17, power cables used for SV670N series servo drives must meet the following requirements: Compliant with NEC, Table 310‑16 of NFPA70. ● Comprised of copper conductors with a rated temperature not lower than 75°C ●...

  • Page 77: Kc Certification

    Certification and Standard Requirements Recommended Circuit Class J fuse (A) inverse time lag Servo drive model SV670N****I breaker (A) breaker S018 S022 Size E S027 Three‑phase 380 V Size C T8R4 Size D T012 T017 Size E T021 T026 Note [1]: It is recommended to use the inverse time circuit breaker for multiple servo drives con‑...
  • Page 78 Prevent any person from touching the equipment. This manual provides a complete list of parameters and functional descriptions, which should always be adjusted with care during field start‑up. If in doubt, please contact Inovance and authorized distributors for technical support. ‑77‑...

  • Page 79: Solutions To Common Emc Interference Problems

    Solutions to Common EMC Interference Problems Solutions to Common EMC Interference Problems Malfunction of the Residual Current Device (RCD) If a residual current device (RCD) is needed, select the RCD according to the following requirements: Use a B‑type RCD because the drive may generate DC leakage current in the ●...

  • Page 80: Harmonic Suppression

    To suppress harmonics and improve the power factor to allow the drive to fulfill the standards, install an AC input reactor on the input side of the drive. For details about reactor models, see the "SV670N Series Servo Drive Selection Guide." For details about the installation method, see "...

  • Page 81: Common I/O Signal Interference

    Solutions to Common EMC Interference Problems Step Separate communication cables from power cables with a distance of at least 30 cm. Add an equipotential bonding grounding cable between " Grounding nodes during multi‑node communication (See the control cabinet system " on page 38 Ensure the length of the cable between two nodes does not exceed 100 m.
  • Page 82 Solutions to Common EMC Interference Problems Step Measure Wind the signal cable onto a magnetic buckle or magnetic ring for one to two turns (see " Installing a magnetic ring and a magnetic buckle " on page 18 Use shielded power cables and ground the shield properly. Figure 5‑2 I/O signal cables with capacitance increased ‑81‑...
  • Page 83 *19011853A04*...

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