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Ulvac Active Arc Killer A2K-20K Operation Manual

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Active Arc Killer
Model： A2K-20K/A2K-40K(Cu Bar type)
M/N: A2K-20K-C/A2K-40K-C
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Before using this product, be sure to read it.
Also, keep this manual at hand with care.
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Revised 5th edition： January 30, 2024
ULVAC, Inc.
DC0046E-05
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Summary of Contents for Ulvac Active Arc Killer A2K-20K

  • Page 1 DC0046E-05 Active Arc Killer Model： A2K-20K/A2K-40K(Cu Bar type) M/N: A2K-20K-C/A2K-40K-C Revised 5th edition： January 30, 2024 ULVAC, Inc. Before using this product, be sure to read it. Also, keep this manual at hand with care.
  • Page 2 The copyrights of the operation manual and this safety guide belong to ULVAC, Inc. A part and whole part of this operation manual are prohibited to copy without a permit of ULVAC, Inc. Handling for this product of this operation manual and to use the manual in the application other than that ULVAC, Inc.

  • Page 3: Precautious Points On Safety

    Active Arc Killer 【A2K-20K/40K】 INTRODUCTION 1. Precautious points on safety Major part of the accidents occurs in relation to the operation carelessly conducted by the operator, the inspection/service and the repair work. Also, if you do not observe the basic caution matters on safety and neglect the dangerous preperception, it is easy to occur.

  • Page 4: Safety Symbol Marks

    Active Arc Killer 【A2K-20K/40K】 INTRODUCTION 2. Safety symbol marks In this operation manual and the warning display of the product main body, the symbol marks about the safety in order to understand the matters to be observed are being put up. The words using the symbol mark are used separately as follows.
  • Page 5 Active Arc Killer 【A2K-20K/40K】 INTRODUCTION 1) Safety symbol marks on the main body The following safety symbol marks are placed on the main body. List of safety symbol marks Safety symbol marks Heavy loads Dangerous voltage part High temperature heated ・There is a danger of getting ・There is a danger of part...

  • Page 6: About This Product

    Active Arc Killer 【A2K-20K/40K】 INTRODUCTION 3. About this product The sentences and illustrations in this operation manual are based on the information at the time of this operation manual prepared. This operation manual may be subject to change without prior notice. Since these changes give the influence on the inspection, confirm the latest information in our company’s exclusive distributor before starting the work.

  • Page 7: Suspecting Abnormality

    Active Arc Killer 【A2K-20K/40K】 INTRODUCTION When our engineer determines that the use condition of the product is inappropriate. Consumption articles (for consumption articles, refer to Chapter 6 "Maintenance" on this manual). 10) A malfunction or trouble occurred by inappropriate handling during post-delivery transportation and relocation. 11) When replacement of part is necessary because of ending of the service life.

  • Page 8: Table Of Contents

    Active Arc Killer 【A2K-20K/40K】 TABLE OF CONTENTS TABLE OF CONTENTS INTRODUCTION ................I 1. P .................... II RECAUTIOUS POINTS ON SAFETY 2. S ......................III AFETY SYMBOL MARKS 3. A ......................V BOUT THIS PRODUCT 4. S ..................... VI USPECTING ABNORMALITY 5.
  • Page 9 Active Arc Killer 【A2K-20K/40K】 TABLE OF CONTENTS 4-4. COV INTLK ANS ....................29 OUTS 4-5. D HOST ..............29 ESCRIPTION OF CONTROL FUNCTION 4-6. D ..............29 ESCRIPTION OF OSCILLATION MODE FUNCTION 4-7. O ............31 SCILLATION START CONDITION IN CONTINUOUS MODE 4-8.

  • Page 10: For Your Safety Use

    Active Aｒｃ Killer 【A2K-20K/40K】 1. FOR YOUR SAFETY USE I. FOR YOUR SAFETY USE In order to use this unit in a safe manner, we describe the caution points on safety, the attached position of warning labels and the contact party. 1-1.

  • Page 11: About Warning Labels

    Active Aｒｃ Killer 【A2K-20K/40K】 1. FOR YOUR SAFETY USE 1-2. About warning labels Always keep clean these warning labels so that it can be all read. As for cleaning of warning labels, use a cloth and water. Do not use gasoline and organic solvents.

  • Page 12: Overview

    This chapter describes characteristics/configuration/specification of this product. 2-1. Introduction This product, Active Arc Killer A2K-20K/40K (hereinafter referred to as A2K), works on the loads to which the power cannot be supplied with a usual DC sputter due to the charge-up of reactive sputtering.

  • Page 13: Composition

    Active Arc Killer 【A2K-20K/40K】 2. OVERVIEW 2-3. Composition This product's configuration is shown below. [Standard accessory] A2K main unit: D-Sub connector for USER I/O PORT (DC-37PF-N/DC-C4-J12-F1): Insulation driver for M/S setting: Upset sems screw (SW,W) M8*18 5 *1 Hexagon nut M8 5 *1 Flat washer M8 5 *1...

  • Page 14: Specification

    Active Arc Killer 【A2K-20K/40K】 2. OVERVIEW 2-5. Specification 2-5-1. Electrical Specifications Table 2-2: A list of specification Item Specifications Type A2K-20K A2K-40K A2K-20K-C A2K-40K-C Rated input voltage AC 100V～240V Input voltage variation 90 VAC to 264VAC (lightning surge not supported) range Number of phases / Single phase: 50/60 Hz...

  • Page 15: Physical Specifications

    Active Arc Killer 【A2K-20K/40K】 2. OVERVIEW 2-5-2. Physical Specifications Table 2-3: Other specifications Item Specifications Forced air cooling system: If it the system is installed in the rack, it shall not block Cooling specifications exhaust heat from A2K. Outer dimensions 480 mm (W) ×...
  • Page 16 Active Arc Killer 【A2K-20K/40K】 2. OVERVIEW Table 2-4: Inversion pulse width by oscillating frequency Oscillating Minimum inversion Maximum inversion Duty [%] min. Duty [%] max. frequency [kHz] pulse width [μs] pulse width [μs] 10.8 12.6 14.4 16.2 18.0 19.8 21.6 23.4 25.2 27.0...

  • Page 17: Preparation

    Active Arc Killer 【A2K-20K/40K】 3. PREPARATION 3. PREPARATION We describe necessary preparation and caution matters in step where after this unit is delivered at your hand, you use this unit. 3-1. Unpacking 3-1-1. Open Take out the unit main body and the accessories from the carton, and check the follwing items. 1) Check that there is no scratch or dent in the external appearance.

  • Page 18: Installation Of A2K

    Active Arc Killer 【A2K-20K/40K】 3. PREPARATION 3-2. Installation of A2K 3-2-1. DC power for supply A2K is a unit for pulsed output waveforms which needs a separate DC power for supply. For the DC power for supply, prepare one that satisfies the specifications for A2K for use. Model Input voltage Input current...

  • Page 19: Class A Grounding

    Active Arc Killer 【A2K-20K/40K】 3. PREPARATION 3-2-3. Class A grounding A2K needs to be used with a DC power supply. Since DC power supplies output a voltage of 1,000V or more at the time of ignition depending on their specifications, be sure to connect to a ground of low impedance with a copper wire for prevention of an electric shock.

  • Page 20: How To Install

    Active Arc Killer 【A2K-20K/40K】 3. PREPARATION 3-2-4. How to install A2K has a rack-mount structure. In installation, set it up in a rack-mountable structure. 0.5 MAX (Insulation sheet) Figure 3-3: Rack mounting hole position For A2K, the front panel structure is not designed to withstand its self-weight.

  • Page 21: About Clearance

    Active Arc Killer 【A2K-20K/40K】 3. PREPARATION 3-2-6. About clearance A2K is a front intake and rear discharge system. Pay special attention to the front and rear clearances. In addition, for the surrounding of A2K, secure sufficient clearance as shown in Figure 3-5 for air intake.

  • Page 22: I/O Cable Connection

    Active Arc Killer 【A2K-20K/40K】 3. PREPARATION 3-3-2. I/O cable connection When connecting optional cables between the DC power supply and A2K and the output cables that comes standard, follow the procedure below. If the procedure below is not followed, the cable clamps may be damaged.
  • Page 23 Active Arc Killer 【A2K-20K/40K】 3. PREPARATION ⑥ Connect the cables to IN1+, IN1-, OUT+/OUT-/SHIELD, respectively. Connections are made with M8 nuts and bolts. 40K requires two input cables to be co-tightened IN+ and IN- respectively. IN1+ IN2+ IN1- IN2- SHIELD OUT+ OUT- Input cable Output cable...

  • Page 24: User Io Port Process Cable

    Active Arc Killer 【A2K-20K/40K】 3. PREPARATION ⑦ Connect the input/output cover to the unit. There is a panel interlock switch in the input/output cover. Securely attach it. The clamp itself cannot support the cable weight. For the input/output cable connection, prevent any tension from being CAUTION applied to the input/output cables themselves.

  • Page 25: Configurations In Synchronization Between The M/Sand The Pulse

    Active Arc Killer 【A2K-20K/40K】 3. PREPARATION 3-4. Configurations in synchronization between the M/S and the pulse 3-4-1. About M/S system configurations I. M/S System Configuration With several A2K units connected with M/S cables, you can use it as a M/S system. In combination with the DC power supply, the range of 20kW to 120kW (for A2K-20K) / 40kW to 240 kW (for A2K-40K) can be used as a system.
  • Page 26 Active Arc Killer 【A2K-20K/40K】 3. PREPARATION UNIT NAME ARD SW Master Master “ 0 ” Slave1 Slave1 “ 1 ” Slave2 Slave2 “ 2 ” Slave3 Master “ 3 ” Slave4 Slave1 “ 4 ” Slave5 Slave2 “ 5 ” Figure 3-11: Connection diagram of M/S cable on back of A2K The settings need to be made depending on the A2K system configuration.

  • Page 27: About Pulse Synchronization System

    Active Arc Killer 【A2K-20K/40K】 3. PREPARATION When setting the back switch, turn off A2Ks and kill the upstream breaker, and then make the settings using the supplied insulated screwdriver for WARNING the M/S setting or a precision screwdriver with an insulation property. A2Ks use high voltage.
  • Page 28 Active Arc Killer 【A2K-20K/40K】 3. PREPARATION Connect the optical synchronization cables from OUT of the upstream CAUTION A2K to IN of the downstream A2K one after another. II. About settings for pulse synchronization system For pulse synchronization, the settings need to be made in A2Ks in addition to establishment of connection between optional optical synchronization cables.

  • Page 29: About 2Link System Configuration

    Active Arc Killer 【A2K-20K/40K】 3. PREPARATION 3-4-3. About 2LINK system configuration I. 2LINK system configuration Connecting between two A2Ks using M/S cables and pulse sync optical fiber cables allows for synchronization with inversion pulses / oscillation start processes / Arc processes. This system can be set up only with two A2Ks.

  • Page 30: External Synchronization System With Psu

    Active Arc Killer 【A2K-20K/40K】 3. PREPARATION 1) On the Master setting unit, set the 2LNK mode to ENABLE. The Slave setting unit automatically switches the setting to the 2LNK mode. In the 2LNK mode, the display of the main screen differs from those of the independent operation, pulse sync operation, or M/S operation mode.

  • Page 31: Startup Input Sequence In M/S Operation / Pulse-Synchronized Operation

    Active Arc Killer 【A2K-20K/40K】 3. PREPARATION ⇒ 3-4-5. Startup input sequence in M/S operation / pulse-synchronized operation If you start the system in the M/S configuration, turn on all the A2K power supplies at the same time or turn on the power supply from the slave. If the slave is not started immediately after the power supply for the master is turned on, ERROR appears.

  • Page 32: Description Of Functions

    Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS 4. DESCRIPTION OF FUNCTIONS This chapter describes various functions of this product. 4-1. Name and function of each part 4-1-1. Front of A2K ⑩ ④ ② ③ ⑤ ⑪ ⑥,⑦,⑧,⑨ ① Figure 4-1: Front of A2K Table 4-1: Name and function on the front part of A2K Name Shape...

  • Page 33: Back Of A2K

    Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS Name Shape Function LED(Green) PULSE ON This lights up when an inversion pulse is output. This lights up when there is no FAIL with the LED(Green) READY interlock released. ⑪ This lights up by the INTLK signal of USER I/O LED(Green) INTERLOCK OK and when the back cover is closed.
  • Page 34 Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS Name Shape Function It is a clamp for the DC input and PULSE output cables. Input/Output cable clamp ⑮ － One side of the input cable clamp of A2K-20K is left blank. Use them separately when connecting a GND cable.

  • Page 35: Description Of Each Operation Mode

    Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS Table 4-3: Name and function on the back of A2K (inside the input/output cover) Name Shape Function For the DC input Connect the ANODE side.*1 Terminal block (M8) ① Install with the supplied nuts and bolts. For the DC input Connect the CATHODE side.*1 ②...
  • Page 36 Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS Various parameters in each operation mode can be changed via the interfaces below. Table 4-5: Interface operable in each operation mode Current operation mode LOCAL USER HOST Front panel Front panel Front panel Operation mode change SERIAL communication port SERIAL communication port...

  • Page 37: Pin Allocation Of User Io Port

    Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS 4-3. Pin allocation of USER IO PORT The pin allocation in the USER operation mode is as follows. For the USER operation mode, connect to external control devices including a PLC in reference to " Table 5-6: USER signal connecting equivalent circuit"...

  • Page 38: Cov Intlk Ans Pin-Outs

    Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS 4-4. COV INTLK ANS pin-outs Table 4-7: Assignment of COV INTLK ANS PORT Pin No. Signal name Type Return Detail INTLK ANS Contact output 6pin Back cover ANS signal RESERVE Not to be used. Do not make connections. INTLK ANS COM Contact output 6pin...
  • Page 39 Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS Inversion pulse width Voltage Oscillating frequency Current t: Time Figure 4-5: Image of waveform in continuous mode ・ One pulse mode Usually the DC power output is passed but, when ARC is detected, this outputs inversion pulses of the set pulse width.

  • Page 40: Oscillation Start Condition In Continuous Mode

    Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS 4-7. Oscillation start condition in continuous mode In the continuous mode, A2K starts oscillation at the set input voltage and current. The input voltage is set by OSCV in the parameter tree and the current is set by OSCI. When both the conditions are satisfied, oscillation starts.

  • Page 41: Setup In Host

    Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS 4-8-3. Setup in HOST See the operating instruction for serial communication separately. 4-9. Description of interpulse ARC function If ARC is detected between oscillation frequencies in the continuous mode, this outputs an inversion pulse to suppress ARC.

  • Page 42: Description Of Hard Arc Function

    Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS 4-10. Description of HARD ARC function There is the HARD ARC function with a shutoff time longer than that of the inter-pulse ARC for the case where ARC is not suppressed by the inter-pulse ARC process. * The conditions for shifting to the HARD ARC process is automatically controlled by A2K and you cannot change them.
  • Page 43 Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS The changed set value of each parameter is retained by the currently selected pulse parameter (SET A or SET B). Table 4-9 shows the retainable parameters. Table 4-9: Retainable parameters MENU screen hierarchy Description F in main screen Oscillating frequency...
  • Page 44 Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS ・USER Mode A can be selected for HIGH and B for LOW of USER IO PORT 15 pin. If not connected, A is used. ・LOCAL Mode This can be changed by selecting A or B at the lower right of the main screen. * For screen operation, see "Chapter 5: Operating Instructions"...

  • Page 45: Display Of Error Code And Warning Code On Front Panel

    Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS 4-13. Display of error code and warning code on front panel When an error and a warning occur, the code corresponding to the content occurring on the front panel is displayed. Displayed error codes, warning codes, and the contents are as follows. Table 4-12: Error code list Error Display name...

  • Page 46: Indication When Multiple Errors And Warnings Occur

    Active Arc Killer 【A2K-20K/40K】 4. DESCRIPTION OF FUNCTIONS Table 4-13: Warning code list Warning Display name Item Description Code W30* PULSE VOLT WARNING Output overvoltage Occurs in the event of an output overvoltage. Occurs in the event of detection of a short W31* DEAD SHORT WARNING※...

  • Page 47: Operating Instructions

    Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS 5. OPERATING INSTRUCTIONS This chapter describes how to operate and handle. 5-1. How to handle This section describes how to handle. On the front panel, you can make the settings including the oscillation frequency etc. 5-1-1.
  • Page 48 Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS LCL： The operation mode is displayed. LCL： Select this when using in the LOCAL mode. HST： Select this when using in the HOST mode. USR： Select this when using in the USER mode. If the oscillation mode is the continuous mode, the oscillation frequency is displayed.

  • Page 49: About Menu Screen

    Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS 5-1-2. About MENU screen For the various MENU settings, see the parameter tree below. A2K Parameter tree MENU CNFG UNIT Number of A2K units Inter-pulse ARC-extinguishing function 1st PARC pulse width Inter-pulse ARC-extinguishing function 2nd pulse width Inter-pulse ARC Setup of time until 2nd ENBL...

  • Page 50: About Buttons On Front Panel

    Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS 5-1-3. About buttons on front panel * For the button arrangement, see Figure 4-1 and Table 4-1. HOME RESET MENU ERROR ・ESC/HOME button The selected content can be canceled. If you go along the hierarchy of the menu screen, return to the previous hierarchy. ・MENU/ERROR button The MENU screen appears.

  • Page 51: About Various Menus

    Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS ・ERROR RESET: "FNC + ENT" Pressing the FNC and ENT buttons at the same time in the LOCAL operation mode resets ERROR. Pressing the FNC button and the ENT button at the same time when ARC COUNT is displayed resets ARC COUNT.
  • Page 52 Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS ・ARC： This allows you to change the process parameters used when ARC is detected. PARC： this allows you to change the ARC process in the continuous mode. HSDN： this allows you to change the interruption time for the HARD ARC process. LEVL：...
  • Page 53 Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS Set the interruption time for the HARD ARC process so that it is shorter than the ARC interruption time of the DC power supply. If the interrupting time of A2K is longer than that of the DC power supply, a false REFERENCE detection of ARC may occur.
  • Page 54 Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS ・ADRS： This allows you to set the network address. The selectable range is 1 to 127 in steps of 1. * For the serial communication, see the separate instructions manual on how to use serial communication.
  • Page 55 Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS ・RTC： This allows you to view and set the current time. The current time can be viewed and set. No backup is taken by the battery and therefore the set time is reset a few hours after the breaker is turned off.
  • Page 56 Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS ・LOG: Warning/Error logs are deleted. Selecting "YES" starts initialization. When the warning/error logs are deleted, the following message appear on the Log window (MONI -> WARN/FAIL): WARN LOG EMPTY FAIL LOG EMPTY SPCL ・SPCL：...
  • Page 57 Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS PULS: This allows you to change/confirm various parameters. JDGE: this allows you to set the oscillation conditions for the continuous oscillation mode. SELF: this allows you to use the SELF CHECK function in the one-pulse oscillation mode.
  • Page 58 Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS MODE ・This is set for processes with a low discharge voltage or for operation in the 2LINK system. LOWM: This is set for processes with a low discharge voltage (processes with a discharge voltage of lower than 300V). 2LNK: This is set for pulse synchronization system operation with two units.

  • Page 59: Parameter List

    Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS 5-1-5. Parameter list The section shows the parameter list. Table 5-2: Main screen parameters Variable Initial Description Setting rage Unit width value Selection of oscillation mode CONT/1PLS/PASS ― ― CONT Selection independent/ synchronized operation CINT/CMST/CSLV/2LKM(2LKS) ―...
  • Page 60 Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS Table 5-5: Parameter tree; parameters in PULS Variable Initial Parameter tree Description Setting rage Unit width value PULS/JDGE/OSCV Setup of oscillation start voltage 10～350 A2K-20K：1～10 PULS/JDGE/OSCI Setup of oscillation start current A2K-40K：2～20 System number in pulse PULS/LINK 0～12 ―...

  • Page 61: How To Operate In User Mode

    Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS 5-2. How to operate in USER mode This is the operating procedure for operation in the USER control mode. In the USER control mode, the external control is available from the USER IO PORT. Control each signal following the procedure below.

  • Page 62: Recommended Digital I/Oconnection Circuit

    Active Arc Killer 【A2K-20K/40K】 5. OPERATING INSTRUCTIONS 5-3. Recommended digital I/O connection circuit A recommended digital I/O connection circuit is shown in the Figure 5-3. System side USER INTERFACE side +15V Digital Input Signal 1kΩ 4.3kΩ (MAX) COMD COM_A2K COMD System side USER INTERFACE side +24V...

  • Page 63: Serial Communication

    Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION 6. SERIAL COMMUNICATION This section describes serial communication using RS-232C and RS-485. 6-1. Overview of serial communication A2K is equipped with a communication interface accessible from a serial port. This provides direct control from a host computer via serial communication.

  • Page 64: How To Connect

    Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION 6-1-2. How to connect RS232C communication For A2K, RXD has 2 pins and TXD has 3 pins. Connect to the HOST computer with a crossing cable. The cable connecting between HOST and A2K shall be 10 m or less at the longest in length. The cable between HOST and A2K should be connected within 10m.

  • Page 65: How To Set Serial Communication

    Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION 6-2. How to set serial communication 6-2-1 Setting method When using RS232C or RS485, you need to make the settings according to the procedure below. ○ NET Address settings For multiple A2Ks controlled on the network via RS485 communication, Address of every A2K needs to be set.
  • Page 66 Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION ① The procedure until the following serial communication menu screen is the same as the setting method of Address. ② On the HOST screen, press the button to select the BPS items on the screen and press ENT button.

  • Page 67: Communication Message Packet

    Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION ● How to change the operation mode from the front panel of A2K See Chapter 5 for instructions on how to make changes from the front panel. Select "HST" for the operation mode in the upper right corner. After editing, press the ENT button to reflect the set value.
  • Page 68 Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION ○ Data field length： The total number of bytes of the command + the data is transmitted. The commands themselves are all 1 byte but the following data are 0 to 7 bytes depending on the command. The allocation is as follows.

  • Page 69: Communication Protocol

    Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION 6-3. Communication protocol The following is the communication transaction steps between the HOST computer and A2K. Message transmitting Message receiving ACK/NAK waiting ACK/NAK transmitting ACK/NAK receiving Acknowledgment Acknowledgment message waiting message transmitting Acknowledgment message receiving ACK/NAK waiting ACK/NAK transmitting...
  • Page 70 Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION ④ Acknowledgment message transmitted from A2K A2K judges whether it is a Write or Read command based on the incoming message. When receiving a Read command, DPG collects required data and transmits a 1-byte command status + data as an acknowledgment message.

  • Page 71: Command Between Host And A2K

    Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION 6-4. Command between HOST and A2K To operate A2K from HOST, the operation mode needs to be set to "HOST(RS232/RS485)." To change the operation mode, make a change by operating the front panel of A2K or transmitting an operation mode change command (0x13).
  • Page 72 Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION Acknowledgment Command Transmission data data Command Command Capacity Description Capacity Description name This is the setting of an ARC detection level by current. The parameter of CNFG/ARC/LEVL/ILEV in the menu of the main unit. The minimum settable changing step is 2 (A).
  • Page 73 Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION Acknowledgment Command Transmission data data Command Command Capacity Description Capacity Description name This is the command for setting PARC parameters. The following parameters are set at once. ○PARC_OSON_1ST_TIME The parameter of CNFG/ARC/PARC/1ST in the menu.
  • Page 74 Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION Acknowledgment Command Transmission data data Command Command Capacity Description Capacity Description name Set the synchronization system No. for synchronized operation using optical synchronization cables. The parameter of PULS/LINK in the menu. If the PULS_OSC(0x41) command is used to set one with synchronization, be sure to set parameters.
  • Page 75 Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION Read command The following commands are for reading various parameters and the A2K status. Table 6-5: Read command list Command Transmission data Acknowledgment data Command Command Capacity Data content Capacity Data content name If ERROR is raised in A2K in the master/slave connection, this command sends back the unit with the ERROR.
  • Page 76 Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION Command Transmission data Acknowledgment data Command Command Capacity Data content Capacity Data content name This sends back whether the SET value of PULSE PULSE PARAMETER set in A2K is A or B. 0xA4 PARAMETER 1byte SELECT...
  • Page 77 Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION Command Transmission data Acknowledgment data Command Command Capacity Data content Capacity Data content name This sends back the oscillation frequency set in A2K. The set frequencies are sent as values 0xB2 PULS CYCLE 1byte from 1 to 50.
  • Page 78 Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION Command Transmission data Acknowledgment data Command Command Capacity Data content Capacity Data content name This sends back the predetermined synchronization system number. This sends back the parameters set in PULS/LINK of the menu. PULSE LINK 0xB7 2byte...
  • Page 79 Active Arc Killer 【A2K-20K/40K】 6. SERIAL COMMUNICATION Example of data transmission ○ Write command In the case of setting 150V to A2K using the command 0x2B (ARC SHUTDOWN VOLTAGE). Address settings of A2K: in the case of 25. The 5 bytes of 99 02 2B 96 00 26 are transmitted. The description of each byte is as follows.

  • Page 80: Maintenance

    Active Arc Killer 【A2K-20K/40K】 7. MAINTENANCE 7. MAINTENANCE This section describes maintenance necessary for a longer use. Insufficient maintenance may accelerate degradation of the unit, causing a fault. 7-1. Maintenance/inspection of A2K Perform a maintenance check for the unit once for every three month or so, including the cable connection and clearance at the inlet and outlet ports of the electric supply unit.
  • Page 81 Active Arc Killer 【A2K-20K/40K】 7. MAINTENANCE CAUTION 1. The recommended replacement years do not guarantee parts life. The deterioration rate of these parts greatly depends on the frequency in use and environment of the unit at your site. 2. Especially the life of a power semiconductor depends on the difference in the operating condition. A high working environment temperature, frequent ON/OFF cycles, and operation around the rating shortens the life.

  • Page 82: Troubleshooting

    Active Arc Killer 【A2K-20K/40K】 8. TROUBLESHOOTING 8. TROUBLESHOOTING In this chapter, we describe how to handle when the trouble occurred. 8-1. Troubleshooting In the event of a trouble, perform a diagnosis according to the procedure below. If the symptom continues, please make an inquiry to us. 8-1-1.
  • Page 83 Active Arc Killer 【A2K-20K/40K】 8. TROUBLESHOOTING Table 8-2: Error code list Error Display name Possible cause Recommended measure Code There is a unit with the same address E10* MODULE ERROR Check the configurations of the back M/S switch. settings in the M/S connection. CAN TIMEOUT ①...

  • Page 84: Troubleshooting For Other Than Warnings/Errors

    Active Arc Killer 【A2K-20K/40K】 8. TROUBLESHOOTING 8-1-2. Troubleshooting for other than warnings/errors For troubleshooting for other than warnings/errors, see Table 8-3 below. Table 8-3: Other symptoms Symptom Possible cause Check item / Measure Check whether the input cables are securely ①...

  • Page 85: About Repair

    Active Arc Killer 【A2K-20K/40K】 8. TROUBLESHOOTING 8-2. About repair The product warranty is valid within 1 year from the date of shipment. Please note that in the case of repair or periodical replacement, only the repaired or periodically replaced points are covered by the warranty for 3 months.

  • Page 86: Attached Data

    Active Arc Killer 【A2K-20K/40K】 9. ATTACHED DATA 9. ATTACHED DATA 9-1. External View Figure 9-1: A2K-20K/A2K-40K external view with rear cover...
  • Page 87 Active Arc Killer 【A2K-20K/40K】 9. ATTACHED DATA Figure 9-2: A2K-20K/A2K-40K external view without rear cover...

  • Page 88: About Compliance With China Rohs

    Active Arc Killer 【A2K-20K/40K】 9. ATTACHED DATA 9-2. About Compliance with China RoHs 中华人民共和国中国电子行业标准SJ / T11364-2014（中国RoHS2） 中華人民共和国中国電子業界標準SJ / T11364-2014（中国RoHS2） Table 9-1:有毒有害物质或元素/ Toxic or Harmful Substances or Elements Cr6+ PBDE 部件名称/ Part name ○ ○ ○ ○ ○ ○ 印刷电路板/Printed board 电子零件/Electronic parts ○...

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