1. Manuals
  2. Brands
  3. Chino Manuals
  4. Controller
  5. JU Series
  6. Instruction manual

Chino JU Series Instruction Manual

Single-phase thyristor regulator
Hide thumbs
Table of Contents

Advertisement

Quick Links

INST.No. INE-316E
Thank you for your purchase of JU series thyristor regulator. Please read this instruction manual
carefully to use the unit correctly and safely and also prevent troubles in advance.
Check your model
Check your model and its
specifications.
INSTRUCTION MANUAL
SINGLE-PHASE
THYRISTOR REGULATOR
To our sales agent and
instrumentation contractor
Deliver this instruction manual
to your final user.
Contents
1
2
3
5
6
7
12
FOR
JU SERIES
Keep this instruction manual until
you throw the unit into the discard.
To user
19
20
21
22
24
26

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the JU Series and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Chino JU Series

Summary of Contents for Chino JU Series

  • Page 1: Table Of Contents

    JU SERIES SINGLE-PHASE THYRISTOR REGULATOR Thank you for your purchase of JU series thyristor regulator. Please read this instruction manual carefully to use the unit correctly and safely and also prevent troubles in advance. To our sales agent and Check your model...

  • Page 3: Cautions On Safety

    3. Summary This JU series single-phase thyristor regulator is the power regulator for controlling of power to a heater of electric furnaces or other equipment, depending on the signal from a controller or a manual setting unit. This unit is designed as a general-purpose product for general industrial products. It is not intended for use in human-life and property related applications such as nuclear and radiation related equipment, medical equipment, aerospace equipment, railroad, and marine transportation equipment.

  • Page 4: Model Code

    1. Model code 1. Labels for Model and Specifications The model and the rated voltage/current of the unit are indicated in the labels pasted on upper panel or front panel. Your checking the specifications of the unit is requested before using. Label Bar code Model code...

  • Page 5: Names Of Component Parts

    This lamp lights when the operation of the unit is normal or flickers when it is (1) EV1 lamp abnormal. If this lamp flickers, stop running the unit at once and contact your nearest agent of CHINO corporation. Lights when an over-current is detected. (2) EV2 lamp Flickers when heater disconnection is detected.
  • Page 6 2. Names of component parts 100A to 250A 300A to 500A (11) (10) Mounting hole (2-M8) (10) Mounting hole (2-M8) (11) －4－...

  • Page 7: Installation

    3. Installation Make sure to turn off the power supply source before installation to prevent an electrical Warning shock accident. The unit is designed as a back-of-panel type to be installed inside a panel, except accessories (setting units, etc.). Ambient temperature and 3.1 Cautions on installation allowable current (1) Install the unit with the UP mark (...

  • Page 8: External Dimensions

    4. External dimensions In case of 10A and 20A In case of 30A, 50A and 75A Alarm display Setting terminals:M3 Alarm display Setting terminals: M3 Main circuit terminals : M5 U1 U2 Protective conductor terminal: M4 Unit : mm Main circuit terminals: M4 Unit : mm Protective conductor terminal: M4...

  • Page 9: Settings

    5. Settings For various settings, change the settings gradually to avoid affection to a load and Caution peripheral units by an abrupt change of output. 5.1 Common settings to current/voltage input signal and contact input signal (1) Control system selection Setting terminals (6) and (7) Open: Phase-angle firing system Short: Zero-cross firing system...
  • Page 10 5. Settings 5.4 Heater disconnection alarm (option, without the setting communications unit) (1) Heater disconnection alarm When the heater resistance value becomes higher than the value being set by the disconnection-ratio setting, EV2 flickers and alarm contact (a contact) is activated to ALARM2. Disconnection ratio = [(Resistance value of which disconnection is to be detected - initial resistance value)/Initial resistance value] x 100(%) Disconnection-ratio setting range is 10% to 100%...
  • Page 11 5. Settings 5.6 References 5.6.1 Control system (a) Phase-angle firing system The output is controlled by changing the conduction angle θ (ON timing) in the half cycle (180 ) of the power supply. The control becomes continuous as compared with the zero-cross firing system. This control system can be used for transformer primary control, too.
  • Page 12 5. Settings 5.6.3 Ramp setting (current/voltage input only) Ramp can be set by the built-in trimmer or connecting a 10kΩ varia- ble resistor to the setting input ter- minals. This is effective for a 3-zone electric furnace, etc. where three thyristor regulators are controlled with one controller.
  • Page 13 5. Settings 5.6.7 Effective value type measuring instrument In case of phase control, output waveform of thyristor is strained. Rectifier type meter will not get a true measure of output because the meter is marked with scale based on the premise of sine wave. When measuring output of thyristor, use a effective value type or moving-iron type of instrument.

  • Page 14: Connections

    6. Connections 6.1 Preparation for connections Be careful that the locations of the setting terminals and main circuit terminals differ depended on models. 10･20A 30 to 75A Setting Setting terminals terminals Main circuit terminals Main circuit terminals 100 to 500A For 100A to 250A, Setting terminals connect to the main...
  • Page 15 6. Connections (1) Turn off the power source before connections to prevent an electric shock accident. Caution (2) Perform connections by experienced persons having the basic knowledge of wiring. 6.2 Cautions on connections For connecting to the main circuit, use a cable having a sufficient allowance to the load current. For connecting to other terminals, twist a 0.3 to 0.75mm cable.
  • Page 16 6. Connections 6.3 Main circuit terminals/power terminals (U1, U2/V) (1) For the CT built-in for a rated current of 10A to 75A, Without feedback Thyristor regulator JU Rapid fuse Required if it is mounted externally *In the case of fuse Ground terminal meltdown, the power to the thyristor will be...
  • Page 17 6. Connections 6.4 Setting input signals There are shorting chips between 12 to 13 and 15 to 16 before shipment. Take out the shorting chips as necessary. 6.4.1 Current/voltage input signals 1) Current/voltage input signals only Current signal (4 to 20mA DC) Voltage signal (1 to 5V DC) 4 to 20mA DC 1 to 5V DC...
  • Page 18 6. Connections 4) Elevation setting unit Current signal (4 to 20mA DC) Voltage signal (1 to 5V DC) 1 to 5V DC 4 to 20mA DC Controller Controller Elevation Elevation VL-JAL(10kΩ) VL-JAL(10kΩ) 5) Manual setting unit and ramp setting unit Current signal (4 to 20mA DC) Voltage signal (1 to 5V DC) 1 to 5V DC...
  • Page 19 6. Connections 7) Ramp setting unit, elevation setting unit and auto/manual selector switch Current signal (4 to 20mA DC) Voltage signal (1 to 5V DC) 1 to 5V DC 4 to 20mA DC Controller Controller Manual setting unit Manual setting unit AUT.
  • Page 20 6. Connections Voltage signal (1 to 5V DC) 1 to 5V DC Controller Ramp setting unit Ramp setting unit Ramp setting unit VL-JAL(10kΩ) VL-JAL(10kΩ) VL-JAL(10kΩ) 6.4.2 Contact input signal Connection of high limit setting unit Connection of high limit setting unit and low limit setting unit Low limit setting High limit setting unit connection...

  • Page 21: Operation

    7. Operation Warning Turn off the power source to the unit before operation to prevent an electric shock accident. 7.1 Check (1) Check all connections again. (2) Check the power voltage and the load capacity again. (3) Measure the insulation resistance with a 500V megger. Execute the dielectric strength test with the main circuit terminals U1 and U2 short-circuited.

  • Page 22: Alarm And Error Indications

    Operation will Err4 detected by self-diagnostic your nearest agent of continue. *1 EV1 EV2 EV3 EV4 (Flashes) function. CHINO Corporation. Repair the heater, and Heater disconnection This alarm activates when the then turn on the power alarm (option) Operation will Err5 heater disconnection is supply again.

  • Page 23: Troubleshooting

    8. Alarm and error indications 8.2 Kinds of alarms An alarm output is activated at the setting terminals (19) and (20) (for Alarm 1) or (8) and (9) (for Alarm 2). For lamp indications of alarms, refer to [8.2 Error indications]. ALARM 2 Setting terminals Alarm output...

  • Page 24: Maintenance

    Control board 5 to 8 years For replacement of the control board, contact your dealer or nearest CHINO's office. Reference Consumable parts The economical life of the unit may be 10 years. Accordingly, the parts, of which lives are supposed to be more than 10 years, are excluded from the consumable parts.
  • Page 25 10. Maintenance 10.４ Replacement of rapid fuse Turn off the power supply to the unit before replacing the rapid fuse for preventing an electric Warning shock accident. For the replacement of the rapid fuse, use the specified tool and keep the specified fastening torque for preventing an accident.

  • Page 26: Accessories

    11. Accessories 11.1 Various setting units 11.1.1 VL-JAL Specifications Variable resistor: 10kΩ Use: Ramp setting Elevation setting High limit/low limit settings MAX30 17 20 knob φ3.5 φ10 Panel cutout 11.1.2 VL-JAM□ 1,2,4 Specifications Voltmeter: 1:0 to 150V 2:0 to 250V 4:0 to 500V to be specified Variable resistor: 10kΩ･2kΩ...
  • Page 27 11. Accessories 11.2 Rapid fuses Voltage Current Type Voltage Current Type 350KH-15 600KH-15 350KH-30 600KH-30 250GH-50S 660GH-50S 250GH-75S 660GH-80S 250GH-100S 660GH-100S 100V 380V 100A 250GH-160S 100A 660GH-160S 150A 250GH-200S 150A 660GH-200S 240V 440V 200A 250GH-315S 200A 660GH-315S 250A 250GH-350S 250A 660GH-350S 300A 250GH-450S...

  • Page 28: General Specifications

    12. General specifications Thyristor unit No. of phases :Single phase Rated voltage :100, 110, 120, 200, 220, 240, 380, 400, 440VAC (to be specified) Allowable voltage fluctuation range :-10% to +10% of the rated voltage Rated frequency :50/60Hz (automatic switching) Allowable frequency fluctuation :±2Hz (performance guarantee ±1Hz) of the rated frequency Rated current :10, 20, 30, 50, 75, 100, 150, 200, 250, 300, 400, 500A, 750A, 1000A (to be specified)
  • Page 29 12. General specifications Setting communications unit (option) Setting : Output setting (0 to 100%), high limit/low limit setting (0 to 100%), ramp setting (0 to 100%), soft start time setting (1 to 20 seconds), heater disconnection alarm setting (Setting range 10 to 100%, Applicable to only models with a heater disconnection alarm function), phase-angle firing system/zero-cross firing system switching, feedback type switching, current limit function, run/stop switch...
  • Page 30 MEMO...
  • Page 32 32-8, KUMANO-CHO, ITABASHI-KU, TOKYO 173-8632 Telephone : 81-3-3956-2171 Facsimile : 81-3-3956-0915 E-mail: inter@chino.co.jp Website: https://www.chino.co.jp/ Printed in Japan...

Table of Contents