Shimaden PAC28 Series Instruction Manual

Single-phase thyristor power regulator
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Thank you for purchasing a Shimaden PAC28 Series Single-Phase Thyristor Power Regulator.
After making sure the product fits the desired description, you should carefully read the instructions and get a good understanding of the contents before
attempting to operate the equipment.
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The instruction manual should be kept in a handy place where the end user can refer to it when necessary.
Installation must be done by qualified personnel.
Preface
The instruction manual has been prepared for those involved in setup, wiring, operation or routine maintenance of PAC28 Series equipment.
This product should be used as a part to be mounted on inspection/measurement equipment.
The manual provides information concerning mounting, wiring and precautions when working with PAC28 Series equipment. You should therefore keep
it in a handy place to refer to when operating and handling the equipment.
Be sure to observe all precautions and adhere to the procedures provided in the manual.
Safety rules, precautions concerning equipment damage, additional instructions and notes are written based on the following headings.
Matters that could result in injury or death if instructions are not followed.
WARNING
Matters that could result in equipment damage if instructions are not followed.
CAUTION
Additional instructions and notes
Note
PAC 28 Series is control heater power, etc., of industrial equipment. It should not be used for nuclear power generation, traffic control, communications or
medical equipment.
You should either take appropriate safety measures or avoid using for control that could have a serious effect on human life. The manufacturer shall not be
liable for an accident that results if used without taking appropriate safety measures.
1. The power regulator should be used so the terminal elements in the control box, etc., are not touched by human beings.
2. The power regulator should not be used as a switch.
Even if output is zero, power is present in the capacitors and resistors of the output circuit, and could result in accident involving human life or serious
bodily injury due to electrical shock.
3. Radiation fins and chassis become extremely hot. Never touch the radiation fins or chassis. Doing so could result in burn injury.
4. Do not supply power when wiring. Doing so could result in electrical shock.
5. Be sure to ground the ground terminal.
6. Do not touch terminal elements or other charged parts while conducting electricity. Also, do not introduce foreign objects or matter into the equipment.
If a foreign object or matter accidentally gets inside, be sure to turn off the power and make sure all is safe before introducing tools or your hands.
Be sure to observe the instruction manual when operating the device. If the content in the manual is not followed, the protectivity of the device will be impaired.
If there is danger of damage to any peripheral device or equipment due to failure of the power regulator, you should take appropriate safety measures such
as mounting a rapid fuse, overcurrent circuit breaker or overheating prevention device.
We recommend you mount an electromagnetic contactor on the power supply for the device and automatically shut off the power supply immediately when
an error occurs.
Using an electromagnetic contactor may result in malfunction due to contact bounce. Malfunctions are especially caused by circuits connected to transformers
(inductive load). If so, you should either use the prescribed noise filter, or connect an X capacitor between the R and T main power terminals (0.1 – 0.5 μF), or a
Y capacitor between the R and T power terminals and the ground (1000 – 3300 pF) to absorb the noise.
1. Concerning the
alert symbol on the power regulator's plate, a
symbol is provided to prompt you to employ special care not to touch the device because doing so could result in electrical shock if parts that conduct
power are touched when power is present, or could result in burn injury if touched when hot, etc.
2. Provide a switch or breaker as a means of cutting off power for external power circuit connected to the power terminal of the device.
Mount a switch or breaker near the device where the operator can get to it easily and label it as an electrical breaker for the device.
3. Be sure to securely fasten conductor cable connections before using.
Failure to do so could result in burning from overheating due to contact resistance.
4. Be sure power supply voltage and frequency do not exceed the rating.
5. Do not apply voltage/current other than rated input to the input terminal.
Doing so could shorten the life of the product or result in equipment failure.
6. Voltage/current of load connected to the output terminal should not exceed the rating.
Using voltage/current that exceeds the rating could shorten the life of the product by raising the temperature, and could result in equipment failure.
7. Be sure to mount the terminal cover that comes with the device after wiring.
8. The user should absolutely not modify or use the device in any way other than it was intended to be used. If this device must be disassembled for
replacement or repair, contact your dealer.
9. To ensure safety and maintain the functions of this device, do not disassemble this device other than replacing the fuse.
If this device must be disassembled for replacement or repair, contact your dealer.
10. Be sure to observe the notes and precautions provided in the manual to use the device safely and maintain its reliability.
Note: Shimaden shall bear no responsibility, monetarily or otherwise, for accident or damages caused by failure to observe warnings, notes and precautions
contained in the instruction manual.
PAC28 Series
Single-Phase Thyristor Power Regulator
Instruction Manual
WARNING
WARNING
CAUTION
CAUTION
alert symbol is printed on the label applied to the outer surface of the device. The
MPA028-E10-D
May. 2023

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Summary of Contents for Shimaden PAC28 Series

  • Page 1 10. Be sure to observe the notes and precautions provided in the manual to use the device safely and maintain its reliability. Note: Shimaden shall bear no responsibility, monetarily or otherwise, for accident or damages caused by failure to observe warnings, notes and precautions contained in the instruction manual.
  • Page 2: Table Of Contents

    Contents 1. Specifications code check ............................................... 3 1-1. Code selection table ................................................ 3 1-2. Rapid fuse selection table ............................................... 3 2. Panel part names and control terminals ..........................................4 2-1. Panel part names................................................4 2-2. Control terminal No. and codes ............................................. 4 2-3.
  • Page 3: Specifications Code Check

    1. Specifications code check Make sure the product you have received matches the specifications of your order. If you have any questions, feel free to contact your nearest Shimaden agent. 1-1. Code selection table Item code specifications High-performance thyristor type power regulator / Standard function: 1 Alarm output (AL1), 3 digital control 1.
  • Page 4: Panel Part Names And Control Terminals

    2. Panel part names and control terminals 2-1. Panel part names 20A/30A 50A/75A/100A/150A/200A/300A/450A Parameter key Up key Down key Enter key Display : Status display (red, 1 digit) Indicates equipment status and displays parameter screens. : Parameter display (green, 4 digits) Displays parameter names and related data.
  • Page 5: Example Of Wiring

    2-3. Example of wiring Terminal no. Control power supply 4 - 20mA Buzzer AL-COM Alarm DI-1 DI-2 DI-COM DI-3 24V DC DO-COM DO-1 HB alarm DO-2 4 - 20mA Indicator A-output When communication function is selected Load RS485 Main power supply CAUTION Power supply is applied on terminal No.
  • Page 6: External Dimensions And Weight

    3. External dimensions and weight Unit: mm (1) 20/30A Weight: Approx. 1.7 kg Note: Do not use M4 screws without squre washers. (2) 50/75A Weight: Approx. 3.3 kg (3) 100A Weight: Approx. 3.8 kg Unit: mm...
  • Page 7 (4) 150/200A Weight: Approx. 7.2 kg (5) 300/450A Weight: Approx. 16 kg Unit: mm...
  • Page 8: Setup Location

    4. Setup location The device is designed to be used under the following conditions. Observe the following environmental conditions when using: 1) Indoor use 2) Elevation: Max. 2000 m (see “16-2. Ambient temperature and load current”) 3) Temperature range: -10 – 55°C (see “16-2. Ambient temperature and load current”) 4) Humidity range: Max.
  • Page 9: Circuit Block Diagram And Terminal Symbols

    6. Circuit block diagram and terminal symbols Shared power supply Independent power supply Control circuit Control circuit Temperature Temperature sensor sensor Rapid fuse Rapid fuse Load Load Power Control power supply supply 240 V 240 V Main power supply 240 V R: Power supply terminal T: Power supply and feedback terminal U: Output terminal...
  • Page 10: Ground / Power Supply / Load (Main Circuit) Wiring

    8. Ground / power supply / load (main circuit) wiring 8-1. Wiring Open the terminal block cover to connect wires to the terminal block. Loosen the fastening screws mounted on the device and wire. 8-2. Ground wiring 8-2-1. Functional grounding The symbol mark for grounding is (functional grounding).
  • Page 11: Control Input Signal Wiring

    9. Control input signal wiring M3 screws are used for control signal terminals. Control terminal Use the proper terminal and securely fasten the screws. Φ mm Min. 3.2 D mm Max. 6.2 Screws Fastening torque (N m) Control signal from the controller (4 – 20 mA, 1 – 5 V, 0 – 10 V, contact, etc.) enters the control input signal terminals (+ / -). Be careful of the polarity and make sure noise from strong electric circuits does not get into the wiring.
  • Page 12: Alarm Function

    11. Alarm function When something is wrong with the device, you can display the status using the status indicator (red LED), then decimal point flashes, and output of an alarm. The equipment stops operating when alarms such as blown fuse, power failure, overcurrent, hardware (H/W) error, or overheating occur. Alarm output destination allocation is set by ‘key sequence 1-2.
  • Page 13: Hardware (H/W) Error

    CAUTION Avoid conducting electricity with no load. If a hardware (H/W) alarm occurs regardless of whether a load is connected, repair is required. Contact your nearest Shimaden agent. 11-5. Overheat If radiator temperature has exceeded approximately 100°C, a overheat alarm occurs.
  • Page 14: Output Adjustment Function

    12. Output adjustment function The device operates at 0 – 100% output according to control input 0 – 100%. The setting is enabled by key input or external adjuster or analog auxiliary input (optional) described in ‘key sequence 1-10. Ramp lower limit setting,’ ‘key sequence 1-11.
  • Page 15: Variation Limit (Slow-Up / Slow-Down Time) Adjustment

    12-4. Variation limit (slow-up / slow-down time) adjustment Input variation is limited by setting slow-up and slow-down time. Output change of the device can be slowed down by limiting input variation. It is effective for suppressing transient current when power is turned on, etc., and controlling heater inrush current so as not to place a burden on power equipment.
  • Page 16: Rapid Fuse / Heater Break Alarm Function

    13. Rapid fuse / heater break alarm function 13-1. Rapid fuse (optional) A rapid fuse can be selected as an option for protection of the thyristor device. The thyristor device cannot be protected by electronic protection circuit from malfunction when using a transformer or load short circuit when conducting power.
  • Page 17: Heater Break Alarm Function

    13-2. Heater break alarm function The heater break alarm is a function whereby an alarm is given to let you know when the heater is broken. 13-2-1 Operation overview The resistance value of the heater is input with the state where temperature of the heater which is connected to the PAC 28-mounted equipment rises and load current is stable.
  • Page 18: Standby, Manual Operation, Digital Control Input (Di) Functions

    14. Standby, manual operation, digital control input (DI) functions The device includes operating state and standby state (STBY). Operating state also includes automatic operation and manual operation. Automatic operation: Output is controlled according to control input. Manual operation: Output is controlled by key operation or external adjuster. 14-1.
  • Page 19: Digital Control Output (Do) / Analog Output / Communication

    15-3. Communication (optional) Hardware conforms to RS-485. Communication protocol is selected from among Shimaden protocol, MODBUS (ASC), and MODBUS (RTU). Set communication conditions by ‘key sequence 1-26. Communication protocol,’ ‘key sequence 1-27. Communication address,’ ‘key sequence 1-28. Communication speed,’ ‘key sequence 1-29. Communication parity,’ ‘key sequence 1-30. Stop bit’ and ‘key sequence 1-31. Communication delay.’...
  • Page 20: Characteristics

    16. Characteristics 16-1. Rated current and heat value Voltage (0.9 – 1.3 V) is produced between terminals by current flowing to the thyristor. Voltage between terminals and accumulation of current (W) turn into Joule heat, resulting in rise in temperature of the thyristor device. Take radiation and ventilation into account. Internal heat value Rated current 100A...
  • Page 21: Various Control Types

    16-5. Various control types Various control functions are available for the device (constant voltage, constant current, constant power, square voltage, etc.). Specify the desired control method when placing your order. Feedback control is a function that detects load current and voltage in the device and controls output according to operation amount from control signal of controller, etc.
  • Page 22: Noise Countermeasures

    Noise filter basic circuit Heater common commercially available noise filters is insufficient. Using noise filters specified by Shimaden can dampen this noise. This Power noise filter is specially designed for Shimaden thyristor power supply regulators.
  • Page 23: Transformer Magnetic Flux Density

    18-2. Transformer magnetic flux density Excessive current flows when the magnetic circuit becomes saturated when using the transformer (load is limited to transformer winding resistance) and could destroy the thyristor. With cycle calculation zero voltage switching control system, the thyristor is switched (ON/OFF) each half cycle. If the load becomes heavy, the output waveform tends to become unbalanced and saturated.
  • Page 24: Key Sequence

    19. Key sequence Note The windows of the various screens are divided as follows. Screen always displayed by key operation, etc. Screen skipped or displayed according to setting state of control operation or input/output type. Screen displayed if applicable options are added or selected. Returns to 0-0 screen if there is no key action for 3 minutes while 1.
  • Page 26 0. Monitor screen group 0-3. Load power Screen group that displays data such as load voltage, current and input values. Displays load power value. Unit: kVA 0-0. Output monitor (basic screen) Basic screen for device. Displays current output. Display unit differs Displayed when voltage value is less than 10 V according to control method.
  • Page 27 0-9. DI input 1. User parameter screen group Displays state of DI input signal. The user can modify the control operation parameters. displayed when DI input signal ON You can obtain safer, more reliable control characteristics by various type displayed when DI input signal OFF of alarm output settings and settings such as overcurrent limit.
  • Page 28 1-10. Ramp lower limit 1-5. Hardware (H/W) error alarm Sets allocation of output ramp limit. Allocates alarm output when thyristor failure or circuit error occurs. Initial value: Can be allocated together with other alarm. Initial value: : Key input allocation; Range: 0.0 – 99.9% Switches from 0.0 state to VR allocation.
  • Page 29 1-14. Slow-down time 1-18. STBY setting If control input varies dramatically, current value may vary precipitously, Sets DI-2. Standby switch. resulting in overcurrent or rise in supply voltage. To suppress this radical Initial value: change, apply variation limit (slow-down time) and lower output gradually. : No allocation (automatic operation) Initial value: Range: 0.0 –...
  • Page 30 The dot of the first digit flashes when parameters can be modified. Pressing enters the data and the dot of the first digit stops flashing. : Shimaden protocol 2-0. Initial screen : MODBUS (ASC) Initial screen for initial setting screen group Switch to this screen when returning to the basic screen.
  • Page 31 3. Manual output screen group 2-3. Input sampling cycle (when function selection is available) If performing manual output operation by key operation, operate by key Displayed when control input type is selected for contact input or voltage pulse. manual target value settings. With heater break alarm, measure heater Controller output is taken in as control input.
  • Page 32: Accessories (Optional)

    External dimensions and mounting dimensions 21. Spare parts The rapid fuse can be replaced when it blows. The fuse should be replaced by a person with knowledge of electricity. If the rapid fuse blows repeatedly, contact your nearest Shimaden agent. Recommended rapid fuses Model...
  • Page 33: Troubleshooting

    22. Troubleshooting If a problem occurs while using the equipment, check it by using the following chart and contact your nearest Shimaden agent. Problem Place to inspect Measures to take No output 1) Display does not light. Check power. If power is not supplied, check out the power supply side.
  • Page 34: Common Specifications

    23. Common specifications Type : PAC28 Control element configuration : Thyristor x 2 anti-parallel connection Main power supply : 100 – 240V AC (used with full-scale voltage set to 100 – 240V; initial value: 220V) Control power supply 20A – 100A: 100-240V AC 18VA 9W 150A –...
  • Page 35 Standby state, operating state (including manual), from heater break, selection of output conditions Communication : RS-485 specs., insulated from control input and system Communication protocol: Selection of SHIMADEN protocol or MODBUS protocol (ASC / RTU) Communication speed: 9600/19200 bps Parity: Selection of EVEN / NON / ODD...
  • Page 36 The contents of this manual are subject to change without notice. Temperature and Humidity Control Specialists Head Office: 2-30-10 Kitamachi, Nerima-ku, Tokyo 179-0081 Japan Phone: +81-3-3931-7891 Fax: +81-3-3931-3089 E-MAIL: exp-dept@shimaden.co.jp URL: https://www.shimaden.co.jp...

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