SCR Power regulator is used together with intelligent PID regulator or PLC with

Power regulator is used together with intelligent PID regulator or PLC with 0-5V and 4-20mA; It is mainly used for heating control of industrial electric furnace. The load type can be single-phase resistive load, single-phase inductive load and single-phase transformer load.

Single-phase power regulator uses digital circuit to trigger thyristor to realize voltage and power regulation. The voltage regulation adopts phase-shifting control mode, and the power regulation has two modes: fixed period power regulation and variable period power regulation. The control board is equipped with phase-locked loop synchronization circuit, power-on slow start, slow shutdown, radiator overtemperature detection, current limit and overcurrent protection.

Single-phase thyristor power regulator

Single-phase thyristor power regulator

The core part of single-phase power regulator makes the control board; The cooling system adopts high-efficiency radiator and low-noise fan. The whole machine has all the functions of the control board. The power regulator is used together with intelligent PID regulator or PLC with 0-5V and 4-20mA; It is mainly used for heating control of industrial electric furnace.

1、 Technical specifications

*Power element: imported unidirectional anti-parallel thyristor (thyristor) module

*Load power supply: single-phase 220, 380V AC ± 10% 50HZ

*Current capacity: 25A 50A, 100A 150A 200A 250A 350A AC

*Power supply and power consumption of control board: 220 or 380V AC ± 10% 50HZ universal, power consumption: 2W maximum

*Fan power supply (equipped according to the model): voltage: 220V AC current: less than 0.5 A

*Control input: 4~20mA DC input, receiving impedance 120 Ω; (Default input signal)

0~5V DC input, input resistance>20K Ω (please specify when ordering)

0~10V DC input, input resistance>20K Ω (order statement)

*LED status display

Meaning of LED name function state color phenomenon

STATE

Three-color status indication status 1 green normal operation (with output)

Status 2 Red and green flashing radiator overtemperature alarm (no output)

Status 3 yellow flashing standby

Status 4 yellow flashes three times and then turns green. Self-test passes

IN green input indication status 1 green light control signal greater than 0

State 2 green off control signal is 0

*Control mode: phase modulation control: continuous voltage regulation; Power regulation control: resistive zero-crossing power regulation

*Adjust output resolution: phase modulation 0.1 °; Power regulation 10ms

*Phase shift range: 0~180 °;

*Drive output: variable width pulse: 8 °~120 ° trigger thyristor module: drive current 300mA

*Manual mode: external 10K Ω potentiometer adjustment

*Soft start soft shutdown time: P3 potentiometer is adjusted during phase angle control. Adjustment range: 0.2~120 seconds

*Voltage limit: P1 potentiometer inside the board or external 10K Ω potentiometer adjustment. Adjustment range 0~100%

*Current limit (option): built-in current converter, external 10K Ω potentiometer adjustment. Adjustment range 20%~100%

*Overcurrent alarm (option): built-in current converter, P2 potentiometer adjustment in the board. Adjustment range 100%~150%

*Radiator overtemperature protection: 75 ℃ temperature switch, normally closed contact action time:<10ms

*Start/stop switch: external switch

*Power regulation/voltage regulation switch (option): external switch

*Working environment: temperature range: - 30~+50 ℃ humidity range: 90% RH maximum non-condensing altitude below 2000m

Storage temperature: - 30~+60 ℃

Other requirements: good ventilation, free from direct sunlight or thermal radiation, and free from corrosive and combustible gases

*Installation form and requirements: wall-mounted, vertical installation

Insulation resistance: module output end and housing, 500VDC; Minimum control board power terminal and enclosure, 500VDC; Control input and housing, 500VDC; Control board input terminal and power supply terminal, 500VDC

*Dielectric strength: 2000VAC for 1 minute between module output end and housing; 2000VAC for 1 minute between control power terminal and enclosure

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