X10598 UNITEDAUTOMATION

Document overview

  • Manufacturer or author: Provided By www.digicamel.com(free datasheet download site)
  • PDF pages: 4

Technical content

V YOU MUST READ THIS BEFORE INSTALLATION ELECTRICAL SAFETY INSTALLATION REQUIREMENTS USER RESTRICTIONS USAGE ENVIRONMENT HOT SURFACE WARNING WARNING: RISK OF ELECTRIC SHOCK Always consult the Installation & Maintenance Instructions before connecting this product to the power supply. WARNING: Disconnect Power Before Servicing Ensure the electrical supply is safely disconnected before connecting to any supply, load, or control terminals. WARNING: Installation by Qualified Personnel Only This product must only be installed or fitted by a competent, qualified installer familiar with the relevant electrical standards and installation practices. WARNING: Not for Use by Vulnerable Individuals This product is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they are supervised or instructed by a person responsible for their safety. WARNING: Industrial Use Only This is an industrial-grade product and is not intended for household use. WARNING: Hot Surfaces On certain models, surfaces marked with this symbol become hot during use. Avoid direct contact and follow all thermal safety precautions. More Info: https://united-automation.com/general-product-safety-regulation-gpsr/

1 July 2025 | Issue: 11 Page 1 of 4

HVAC | HEATER BATTERY CONTROLLER PR3-E SERIES X10598 12kW, 18kW, 415V DIN Rail Mounting HVAC Range Three Phase Burst Fire AC Power Controllers 0044 (0) 1704-516 501 enquiries@united-automation.com www.united-automation.com CONTACT US: KEY FEATURES: The PR3-DIN range of thyristor stacks offers seamless control of three-phase electric heating loads, ideal for integration with a Building Management System (BMS) or similar controllers. These burst firing controllers utilise zero volts switching technology to minimise Radio Frequency Interference (RFI) issues. Available in 12kW and 18kW models, they operate at a typical AC voltage supply of 415V using the two-thirds control technique. Key features include DIN rail mounting capability, DC voltage signal control, automatic reset temperature trip, alarm output, and LED ‘OUTPUT-ON’ indication. The controllers provide easy access to internal signal and power terminals and do not require additional heatsinks. The PR3-E Series offers a robust and efficient solution for various industrial heating applications, ensuring reliable performance and easy integration.  Seamless Three-Phase Control: Efficiently manages three-phase electric heating loads.  Zero Voltage Switching: Minimises RFI issues for a smoother operation.  Two-Thirds Control Technique: Available in 12kW and 18kW models for 415V AC supply.  DIN Rail Mounting: Easy installation on TS35 section DIN rail.  Temperature Trip with Automatic Reset: Ensures safety with over- temperature protection.  Alarm Output: Provides 24V AC or DC alarm output, indicating over- temperature or power supply failure.  LED Indicators: Displays 'OUTPUT-ON' status for easy monitoring.  No Additional Heatsink Required: Simplifies installation and reduces additional component costs. TECHNICAL SPECIFICATIONS Power / Current Ratings 12kW (17A); 18kW (25A) @ 415V RMS Input Voltage 3 phase from 24V to 440V ac RMS Frequency 50/60Hz Input signal (0V-24V) 0 to 10V dc Power supply (0-24V) Remote 24V ac or dc +/- 10% @ 40mA (No supplied) (Required) Terminal ratings (Input signal/alarm/24v supply input) – rising clamp terminal block for 2.5mm² cable entry Alarm output 24V ac or dc (as power supply) normally present. Drops to 0V in the event of over temperature or power supply failure. Over-temperature Trip in temperature @ 90°C +/- 5°C, Trip out temperature @ 85°C +/- 5°C Status Indicator T1 and T3 indicate output ration Power Terminations Rising clamp terminal block for 6mm² cable entry Terminal Torque Settings 0.8Nm (Power Terminals Only) Fusing 12kW: 20A (20ET) & 18kW: 30A (32ET) – both High-Speed Semiconductor type fuses or equivalent MCB’s Max. Ambient Temperature 40°C Dimensions 12kW 217mm (W) x 87mm (H) x 90mm (including DIN chips) (D) – with firing circuit terminals front facing 18kW 217mm (W) x 87mm (H) x 110mm (including DIN chips) (D) – with firing circuit terminals front facing DIN rail mounting Using TS35 section DIN rail Weight 12kW 0.6kg & 18kW 0.95kg APPLICATIONS: The PR3-E Series is ideal for controlling electric heating coils, heating cables, and electric furnaces. Its robust design ensures reliable performance in various industrial heating applications.

X10598 HVAC | HEATER BATTERY CONTROLLER PR3-E SERIES 12kW, 18kW, 415V Three Phase Burst Fire AC Power Controllers BMF House - Wight Moss Way, Southport Business Park Southport PR8 4HQ ENGLAND, UNITED KINGDOM Contact Us:  0044 (0) 1704-516 501  enquiries@united-automation.com  www.united-automation.com unitedautomationltd UA_Limited 1 July 2025 | Issue: 11 Page 2 of 4 FUNCTIONS Cycle Time and Signal Rescaling The cycle time is preset for optimal performance. A 0 to 10V DC input signal correlates directly with load output:

  • A 5V input signal results in the load being at 50% ON.
  • A 2.5V input signal results in the load being at 25% ON.
  • A 10V input signal results in the load being at 100% ON. CAUTION: Adjustment of the cycle time and signal rescaling is possible using HD3, HD4, VR1, and VR2, but it is not normally required. Incorrect settings of these controls can cause an overload condition, resulting in failure and permanent damage to the PR3-DIN series. DO NOT ATTEMPT TO ADJUST THESE CONTROLS WITHOUT CONSULTING THE SUPPLIER OR MANUFACTURER. Manual Override The PR3-DIN series is preset to the automatic 'A' position. Manual override of the input signal is possible by placing the HD2 jumper plug in the 'M' position. In the 'M' position, the load will be 100% ON. The output load can be adjusted downward using the signal rescaling facility described above. Over-Temperature Protection An electronic thermal cut-out is fitted to the heatsink to protect against over-temperature. The PR3- DIN series will switch off the load if the heatsink temperature exceeds 90ºC and will reconnect the load once the temperature drops below 85ºC. Under normal operating conditions, the heatsink temperature should not reach 90ºC, except in cases where the ambient temperature exceeds 40ºC. Alarm Output The alarm output is referenced to 0V and the alarm terminal input. The alarm is triggered by zero voltage presence (as specified). INSTALLATION Cooling Requirements The PR3-DIN series is designed for a maximum ambient temperature of 40°C. Environmental conditions should be assessed, and adequate ventilation, including cooling fans, should be provided in enclosures with limited air changes. Location: The units are designed to be mounted on a TS35 section DIN rail and should be installed with their heatsink cooling fins in a vertical orientation. Ensure sufficient surrounding air space (typically a minimum of 100mm in a vertical plane) to maximise natural convection cooling. Load Supply and Backup Protection Considerations The PR3 series of power controllers are designed for resistive type loads in 'Floating-Star' or 'Closed- Delta' configurations. It is recommended to install a load disconnection switch and contactor in the load supply. The supply to the contactor coil should be interrupted by sensors for over-temperature in the heater and upon airflow loss.

X10598 HVAC | HEATER BATTERY CONTROLLER PR3-E SERIES 12kW, 18kW, 415V Three Phase Burst Fire AC Power Controllers BMF House - Wight Moss Way, Southport Business Park Southport PR8 4HQ ENGLAND, UNITED KINGDOM Contact Us:  0044 (0) 1704-516 501  enquiries@united-automation.com  www.united-automation.com unitedautomationltd UA_Limited 1 July 2025 | Issue: 11 Page 3 of 4 Control Supply The control circuitry is fully isolated from the load supply and requires its own 24V (AC or DC) supply. The control supply common is linked to the 0 to 10V input signal common. Ensure all low voltage signal and supply cables are kept separate from high voltage or mains cables, using separate trays or conduit. Screened cables should be used for connections to BMS controllers, with the cable screen connected to a functional earth (NOT mains safety earth). The screen should typically be earthed at one end only to avoid earth loops. The unit features simple clamp-type connectors for all auxiliary wiring requirements. Refer to the wiring details inside the lid. Note: SAFETY WARNING

  • Isolate the power supply before removing the cover.
  • Metal parts, especially the heatsink, can become extremely hot during operation.
  • DO NOT COVER the enclosure ventilation slots. It is crucial to install a load break switch and a contact breaker in the load supply. The power supply to the contactor coil should be interrupted by an over-temperature thermostat located in the heater battery and upon detection of airflow loss. CONNECTIONS

X10598 HVAC | HEATER BATTERY CONTROLLER PR3-E SERIES 12kW, 18kW, 415V Three Phase Burst Fire AC Power Controllers BMF House - Wight Moss Way, Southport Business Park Southport PR8 4HQ ENGLAND, UNITED KINGDOM Contact Us:  0044 (0) 1704-516 501  enquiries@united-automation.com  www.united-automation.com unitedautomationltd UA_Limited 1 July 2025 | Issue: 11 Page 4 of 4 RECOMMENDATIONS FUSING It is recommended that fast acting semiconductor type fuses (as specifications) be used in line with the supply (L1, L2, L3) for protection of the devices. The 24V remote supply should be fused accordingly (e.g. F500mA). See SRA Data sheet X10255 for further information. CE Marking This product family carries a “CE” marking. These burst firing type controllers do not require a filter. For information, see the recommendations section and contact our sales desk. See the Declaration of Conformity. DOCUMENTS Other documents available on request, which may be appropriate for your application: Code Identity Description X10213 ITA Interaction: Uses for phase angle and for burst fire control X10255 SRA Safety Requirements: Addressing the Low Voltage Directive (LVD) including, Thermal Data/Cooling, Live Parts Warning, Earthing Requirements and Fusing Recommendations X10617 Wiring connection details are attached to the inside of the lid X3-00-001 HVAC Brochure: Heating Ventilation and Air Conditioning Power Controllers P01.1 COS UAL Conditions of Sale It is recommended that installation and maintenance of this equipment should be done with reference to the current edition of the I.E.T. regulations (BS7671) by suitably qualified/trained personnel. The regulations contain important requirements regarding the safety of electrical equipment. For International standards refer STANDARDS on D of C. PRODUCT CODE AND RELATED PRODUCT CODE Product Code Product Description A437317-HV PR3-E-DIN-12kW, 17A, 415V – Three phase - DIN Mounted A437318-HV PR3-E-DIN-18kW, 25A, 415V – Three phase - DIN Mounted