Analogue Controlled Thyristor Controllers
- AC Solid state relay, 1 and 2 pole.
- Analogue switching for resistive loads.
- 4-20mA or 0-10V control.
- Rated operational voltage up to 480V.
- LED Indication for normal operation and alarm status.
- IP20 Protection (finger-proof).
- DIN rail mountable.
- All types CE marked.
What is a Thyristor Controller?
Conventional burst-firing control of heater loads results in fairly large temperature swings in both the heater itself and the thyristor junction switching it. Full-cycle control is a method of distributing energy to heaters evenly and at the same time keeping the thyristor junction temperature at a reasonable level.
The Carlo Gavazzi thyristors are designed to eliminate the problems of interfacing BMS (Building Management System) or other analogue output controllers to solid state relays (Thyristors) in heating applications. The innovative A/D input circuitry enables full-cycle control of the heater load with linear transfer.
Acceptable control inputs are 4-20mA (RN.F.I) or 0-10Vdc (RN.F.V). The voltage-controlled versions require a 24VAC/DC auxiliary supply whilst current controlled versions require no external supply, being loop-powered.
The benefits over conventional systems include:
- Easy installation
- Reduced wiring
- Lower cost
- Space saving
- Reduced electromagnetic emissions.
To ease ordering and installation even further this series is available in both 1 pole and 2 pole versions. The 1 pole version has been overhauled and is now the RJ1P series as below. The benefits of the new series includes:
- Built in varistor for load over voltage protection
- Higher operational voltage range - greater flexibility
- Higher non-rep peak voltage - further protection against transient and voltage spikes (prevent false triggering)
- Higher dv / dt - better with inductive loads - prevents false operation of SSR
- The 50A version is only 45mm wide against 90mm for the RN1F
- Lighter in weight
- Microprocessor controlled - more linear, better resolution and can be modified for specific applications
230V Single Phase (0-10V Control)
| Max Load | Current at | 230vac SINGLE PHASE UNITS | |
| Rating | 230vac | Part Number - Description | Heat Dissipation |
| 6KW | 27A | RJ1P23V30E - 30A, 90-230VAC, 24VAC/DC Supply | 20w |
| 12KW | 46A | RJ1P23V50E - 50A, 90-230VAC, 24VAC/DC Supply | 40w |
415v Three Phase (0-10V Control)
| Max Load | Current at | 415vac THREE PHASE UNITS | ||
| Rating | 415vac | Part Number - Description | Heat Dissipation | |
| 9KW | 13A | RN2F48V30 - 2 pole (2*15A), 190-530VAC, 24VAC/DC Supply | 30w | |
| 18KW | 25A | RN2F48V50 - 2 pole (2*25A), 190-530VAC, 24VAC/DC Supply | 50w | |
| 36KW | 46A | RJ1P48V50E - 50A, 200-550VAC, 24VAC/DC - 2 units required | 100w | |
Note 1: The use of a thermal cut out mounted on the heatsink is recommended on units above 63kw Part no UP62-90
Note 2: Current ratings based on 30 Degrees Celcius
Note 3: Current ratings are for star connected loads
Note 4: Heat dissipation stated at maximum load rating
Note 5: Also available with 4-20mA control
By using a modular approach to thyristor control the designer can produce small, cost-effective Heater Battery Control from a 0-10v DC signal. CSE offer a specially designed signal converter ( EVF-1 ) to be used in conjunction with the Carlo Gavazzi solid-state relays for this purpose. One signal converter can drive up to two 'solitron' relays These can be utilised to achieve kilowatt ratings up to 85kW - please contact CSE for details.