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Amada MK-108B Operation Manual

Motor-driven unit
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MOTOR-DRIVEN UNIT
MK-108B/109B
OPERATION MANUAL
AA05OM1208810-02

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  • Page 1 MOTOR-DRIVEN UNIT MK-108B/109B OPERATION MANUAL AA05OM1208810-02...

  • Page 2: Table Of Contents

    MK-108B/109B Thank you for purchasing our Motor-Driven Unit MK-108B/109B ・ This operation manual explains its method of operation and precautions for use. ・ Before using, read this operation manual carefully; after reading, save it in a proper place where you can easily access.

  • Page 3: Special Precautions

    MK-108B/109B 1. Special Precautions CAUTION (1) Safety Precautions ！ Before using, read "Safety Precautions" carefully to understand the correct method Denotes operations and practices that of use. may result in personal injury or damage to the equipment if not correctly followed.
  • Page 4 MK-108B/109B WARNING ！ Do not put your hands between the electrodes When welding, keep your fingers and hands away from the electrodes. Do not touch any welded part or electrodes during welding and just after welding finished The welded part of a workpiece, electrodes and electrode holder are very hot.
  • Page 5 MK-108B/109B CAUTION ！ Do not splash water on the Unit Water splashed over the electric parts can cause electric shock and short circuits. Use proper tools (wire strippers, pressure wire connectors, etc) for termination of the connecting cables Do not cut the conductor of wire. A flaw on it can cause fire and electric shock.

  • Page 6: Precautions For Handling

    MK-108B/109B (2) Precautions for Handling Do not install this Unit in the following: ■ ・Damp places where humidity is higher than 90%, ・Dusty places, ・Places where chemicals are handled, ・Places near a high noise source, ・Hot or cold places where temperatures are above 40°C or below 0°C, and ・Places where water will be condensed.

  • Page 7: Features

    MK-108B/109B 2. Features  Since this Unit is motor driven, the piping for air actuation is not needed, enabling an easy installation.  Owing to motor-driven mechanism, stable electrode force is always obtained even if the electrode opening changes. Also, you don’t need to adjust the electrode opening finely when replacing electrode.

  • Page 8: Name And Functions Of Each Section

    MK-108B/109B 3. Name and Functions of Each Section (1) MK-108B Mounting sueface of follow-up mechanism  Base For the Unit.  Fixing Bracket For fixing the Unit to the workbench. Two (2) brackets provided. φ5.5 mm mounting hole diameter (M5 countersink).
  • Page 9 MK-108B/109B (2) MK-109B Mounting surface of follow-up mechanism  Column For mounting the driving mechanism, etc.  Base For the Unit.  Base-Mounting Holes For mounting the Unit to the workbench. Six (6) holes are provided. φ6.5 mm diameter, φ11 mm spot facing and 10 mm depth.

  • Page 10: Controller Front

    MK-108B/109B (3) Controller Front TROUBLE SPEED HOLD TIME W E L D H E A D READY C O N T R O L U N I T WELD HOLD AUTO FORCE ORG/CANCEL CHECK ⑭  Operation Button Operate the Unit by turning the button clockwise/counterclockwise or pressing it.
  • Page 11 MK-108B/109B See the list below for  to ⑪ Lamp When illuminated, When blinking, When power supply is applied, zero “0” blinks. Schedule Nos. are displayed. ② [SCH When trouble occurs, fault code is (31 combinations of Electrode (Schedule)] displayed.
  • Page 12 MK-108B/109B  [SPEED HOLD TIME] Display Indicate the “electrode speed” and “HOLD Time after the application of weld force is completed”. The larger number indicates the faster electrode speed and the longer HOLD Time. And the lamp lights up simultaneously with other lamps as follows:...

  • Page 13: Controller Rear

    MK-108B/109B (4) Controller Rear  [MOTOR CONTROL] Connector It is a connector for controlling a motor to drive the electrode.  I/O Connector It is for input/output of signals.  Connector for Weld Force detecting Sensor It is for inputting the weld force signal of the force follow-up mechanism portion.

  • Page 14: Installation And Connection

    ① Determine where to install the Unit, welding power supply and welding transformer. Drilling Mounting Holes ② Drill mounting holes on the workbench to secure the Unit, following the drawings below: MK-108B Drillings 2-5.5mm Drills [Front] MK-109B Drillings (18) [Front] 6-6.5mm Drills...
  • Page 15 MK-108B/109B Installing the Unit ③ Install the Unit to the workbench with the hexagon socket head bolts/cross-recessed countersunk head screws, plain washers, spring washers and hexagon nuts (See drawings below). Use a proper tool suitable for the bolts/screw to secure the Head.

  • Page 16: Example Installation

    MK-108B/109B (2) Example Installation  MK-108B 4. Installation and Connection...
  • Page 17 MK-108B/109B  MK-109B 4. Installation and Connection...

  • Page 18: Interface

    MK-108B/109B 5. Interface (1) Connection Diagram of External Input/Output Signal Motor Controller External Input/Output Connector 24VDC Å -COM SCH1 SCH2 SCH4 SCH8 SCH16 +COM +COM Spare: Do not connect -COM +COM EXT.COM -COM RESET P.LOCK Spare: Do not connect STOP...
  • Page 19 MK-108B/109B [Example of Connection] ・When contacts are used as input terminal of I/O connector Å 24VDC + C O M -COM +COM EXT.COM -COM ・ When NPN transistor (sink type) on PLC is used as input terminal of I/O connector Å...

  • Page 20: Explanation Of External Input/Output Signal

    MK-108B/109B. Before selecting the schedule Input number by the operation button on MK-108B/109B, open the circuits of all the Pins of No. 2, 3, 4, 5 and 6 in I/O Connector. Input [SCH] signal at least 2 ms before the welding current flows. During in operation, the schedule number cannot be changed.
  • Page 21 MK-108B/109B Description Output pins for 24 V DC through 100Ω internal resistor. Input pin for start-up signal. When [1ST] is closed, electrode moves from Start Point to Mid-Point. Input When [2ND] is closed after [1ST] was closed, electrode moves from Mid-Point to Weld Point.
  • Page 22 Close at least for 2 ms. Pin 18 does not work while the circuit of Pin 18 is closed. Input pin for prohibition of setting the operation schedule. When Pin 19 is closed, the operation schedule of MK-108B/109B cannot be set. (The schedule number can be modified.) Spare pin: Do not connect.
  • Page 23 [ERROR] Output pin for a trouble signal. ERROR When trouble occurs Output MK-108B/109B, the Pin becomes OUT COM opened until it is reset. or 31 Spare pin: Do not connect. Common terminal to [READY], [START POINT], [MID POINT] and [ERROR] Do not connect to the Pin for [EXT.

  • Page 24: Operation

    External Input [2ND]. These two switches allow a variety of operations.  Position of Electrode The MK-108B/109B Electrode has five (5) positions to stop. Position Description Original Point The position where the electrode has completely returned.

  • Page 25: Mode Setting

    MK-108B/109B In case that Start Point of changed Schedule No. differs from the one of the last Schedule No., once make the electrode move to Mid-Point to attain the new Start Point. ２ Ｎ Ｄ Start-up １ Ｓ Ｔ Ｏ Ｆ Ｆ...
  • Page 26 MK-108B/109B select “0” or “1”. Press the operation button to fix Mode No. Finally, be sure to perform the step   Change of ERROR Signal Output Press the operation button while “1” blinks on [SPEED HOLD TIME] Display. Mode No. blinks on [SCH(SCHEDULE)] Display. Rotate the operation button to select “0”...

  • Page 27: Auto-Setting Of Electrode Position

    MK-108B/109B (4) Auto-Setting of Electrode Position The electrode position can be set automatically by means of the auto-setting function. Turn the operation button to light up [AUTO] Lamp. Press the operation button for 1 second, and [AUTO] Lamp blinks. Close External Input [1ST], and the electrode moves to Original Point.

  • Page 28: Manual Setting Of Electrode Position

    MK-108B/109B (5) Manual Setting of Electrode Position  Selecting Schedule No. Turn the operation button to light up [SCH] Lamp. Press the operation button for 1 second. [SCH] Lamp and [SCH] Display blink. Turn the operation button clockwise and counterclockwise to select a numeral (1 to 31) on [SCH] Display.
  • Page 29 MK-108B/109B  Changing Moving Speed between Start Point and Mid-Point Turn the operation button to light up both [READY] and [MID] Lamp. Press the operation button for 1 second. [READY] and [MID] Lamp blink. The number of blinking [SPEED HOLD TIME] Lamp indicates the current speed setting.
  • Page 30 MK-108B/109B When you want to interrupt the operation, Press [ORG/CANCEL] button, and [MID] Lamp blinks fast. Close External Input [1ST]. The electrode returns to the previous position with beeps. In case of Mode 1, it works by pressing the operation button in addition to External Input.
  • Page 31 MK-108B/109B [In case that the electrode cannot move beyond Weld Point because of a workpiece] Turn the operation button until the electrode stops, then press the operation button. Downstop Point is set 5 mm beyond Weld Point and [WELD] Lamp blinks fast.
  • Page 32 MK-108B/109B Press the operation button when your desired period is indicated. Press [ORG/CANCEL] button to interrupt. ２ Ｎ Ｄ ２ Ｎ Ｄ Start-up １ Ｓ Ｔ Ｏ Ｆ Ｆ END Signal Ｅ Ｎ Ｄ Input Start Point Electrode Mid-Point Movement...

  • Page 33: Welding Work

    MK-108B/109B  Setting Moving Speed from Weld Point to Mid-Point Turn the operation button to light up both [MID] and [WELD] Lamp. Press the operation button for 1 second. [MID] and [WELD] Lamp blink. The number of the blinking [SPEED HOLD TIME] Lamp indicates the current speed setting.

  • Page 34: Measuring Weld Force

    Press the operation button for 1 second. [FORCE CHK] Lamp blinks and a numeral blinks on [SCH] Display. A minus “–” lights up on [SPEED HOLD TIME] Display on the MK-108B; a vertical bar “|” on the MK-109B. Rotate the operation button to change Schedule No.

  • Page 35: Fault Indications

    MK-108B/109B 7. Fault Indications When a trouble occurs at the apparatus, [TROUBLE] Lamp lights up and a fault code is shown on [SCH] Display. Closing External Input [RESET] or continuing to press the operation button can reset the fault signal.

  • Page 36: User's Maintenance

    MK-108B/109B 8. User’s Maintenance ATTENTION • Make sure that the tool used for adjustment fits the screw size. Upon completion of adjustment, tighten the screws firmly. There should be no looseness or rattling. • The Holder is made of soft material. When tightening a screw, take care not to damage it.

  • Page 37: Specifications

    (Round plug, for 200-240V AC) 3-pin/2-pin conversion KPR-24(SB)-B (for 100-120V AC) adapter for power cable *1: Exclusively for the MK-108B/109B. Do not use for other devices. Note: For the force follow-up mechanism, the secondary conductor, the lower electrode holder, etc., consult us. 9. Specifications...

  • Page 38: Mountable Force Follow-Up Mechanism

    MK-108B/109B (3) Mountable Force Follow-Up Mechanism Model Remarks VP-S VPW-S Twin shaft structure For MK-108B/109B VPDW-S Twin shaft structure and Displacement sensor-equipped VP-SS VB-S VBW-S Twin shaft structure VT-S For MK-109B VTW-S Twin shaft structure VTDW-S Twin shaft structure and Displacement sensor-equipped...

  • Page 39: Timing Chart

    MK-108B/109B (4) Timing Chart  Power ON and Error occurring Switch of Ｏ Ｎ Apparatus Ｏ Ｆ Ｆ Ｏ Ｎ Power Supply to Motor Ｏ Ｆ Ｆ １ＳＴ or ＯＲＧ Start-up Ｏ Ｆ Ｆ Original Original Point Point Start Start...

  • Page 40: Outline Drawings

    10. Outline Drawings (1) MK-108B Note: Depending on your specifications, the mounting plate of the follow-up mechanism portion and the feed block is different. The following drawing is MK-108B-00-01. (Dimensions in mm) MK-108B-00-01 Mounting plate of follow-up mechanism portion, S-series •...
  • Page 41 MK-108B/109B (2) MK-109B Note: Depending on your specifications, the mounting plate of the follow-up mechanism portion and the feed block is different. The following drawing is MK-109B-00-03. (Dimensions in mm) MK-109B-00-03 Mounting plate of follow-up mechanism portion, S-series • Feed block (2 pieces) •...

  • Page 42: Controller

    MK-108B/109B (3) Controller (Dimensions in mm) 10. Outline Drawings 10-3...

  • Page 43: Example Combination

    MK-108B/109B 11. Example Combination Reference drawings of example combination of the motor-driven unit (MK-108B/109B), the force follow-up mechanism portion (V series) and the lower electrode holder (MK-308A/309A) are shown below. The unit of dimension is mm. Dimensions may differ depending on specifications of electrode and holder.
  • Page 44 MK-108B/109B [MK-108B-00-01 + VP-S + MK-308A-01] 21.5 197.5 11. Example Combination 11-2...
  • Page 45 MK-108B/109B [MK-108B-00-01 + VPW-S + MK-308A-01] Note: For VPDW-S (displacement sensor-equipped type), the shape of the follow-up mechanism portion’s main body is different. 21.5 197.5 11. Example Combination 11-3...
  • Page 46 MK-108B/109B (2) MK-109B [MK-109B-00-02 + VP-SS + MK-309A-01] 251.5 Can be moved up and down 11. Example Combination 11-4...
  • Page 47 MK-108B/109B [MK-109B-00-04 + VT-SS] 244.2 Can be moved up and down 11. Example Combination 11-5...
  • Page 48 MK-108B/109B [MK-109B-00-01 + VP-S + MK-309A-01] 229.5 Can be moved up and down 11. Example Combination 11-6...
  • Page 49 MK-108B/109B [MK-109B-00-03 + VT-S] 232.5 Can be moved up and down 11. Example Combination 11-7...
  • Page 50 MK-108B/109B [MK-109B-00-01 + VPW-S + MK-309A-01] Note: For VPDW-S (displacement sensor-equipped type), the shape of the follow-up mechanism portion’s main body is different. 236.5 Can be moved up and down 11. Example Combination 11-8...
  • Page 51 MK-108B/109B [MK-109B-00-03 + VTW-S] Note: For VPDW-S (displacement sensor-equipped type), the shape of the follow-up mechanism portion’s main body is different. 236.5 Can be moved up and down 11. Example Combination 11-9...
  • Page 52 MK-108B/109B [MK-109B-00-03 + VBW-S] 236.5 Can be moved up and down 11. Example Combination 11-10...

This manual is also suitable for:

Mk-109b

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