How to wire the phase-shift trigger module?

INTRODUCTION:

The phase-shift trigger module is a device for adjusting the conduction angle of the power thyristor (i.e., phase-shift) . The phase-shift trigger module cannot work solely, it can be combined with a synchronous transformer, a solid state relay / power thyristor circuit and etc. to form a voltage regulator to adjust the load voltage from 0 to max.
But if you have no synchronous transformer, or no solid state relay or power thyristor output circuit, then we recommend that you directly select the "Voltage Regulator ", and learn how to wire the voltage regulator.
Through this article you will learn how to wire our phase-shift trigger module.

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CONTENTS

§1. How to wire the Solid State Relay Phase-shift Trigger Module?

1.1 Single Phase Solid State Relay Phase-shift Trigger Module

SSR-JK Series

This single phase solid state relay phase-shift trigger module needs to be equipped with an 18VAC synchronous transformer and a random conduction type solid state relay (or random fire type solid state relay), so it is also called a single phase random conduction type solid state relay phase-shift trigger module (or single phase random fire type solid state relay phase-shift trigger module). According to the installation methods, the solid state relay phase-shift trigger module can be divided into PCB mounting type (SSR-JKZK series), Panel mounting type (SSR-JKWK series). SSR-JKZK series is directly mounted on the printed circuit board, and cooled by natural cooling without heat sink; SSR-JKWK series is mounted to the metal baseplate or heat sink, and cooled by forced cooling.
● The ① and ② ports are connected to the 18VAC secondary winding of the synchronous transformer to offer the power supply and the synchronous reference voltage for the phase-shift trigger circuit.
● The ③ port is the common terminal.
● The ④ port is the output terminal.
● The ⑤ port is the internal common ground terminal. If the phase-shift trigger circuit is controlled by the external automatic control circuit, the ⑤ port will be connected to the ground of the external control circuit.
● The ⑥ port is the control terminal. When there is a 0.5V voltage signal inputted to the ⑥ port, a wide pulse (whose phase can be shifted from 180° to 0°) will be produced on the output terminal ④ port (for resistive loads).
● The ⑦ port is the +5V voltage terminal generated inside the module. If the ⑤, ⑥, ⑦ ports are connected to the external potentiometer to apply the manual control method, the ⑦ port acts as the power supply for it; if the control signal is provided by external control circuit to apply the automatic control method, the ⑦ port should remain unavailable.
● CON must be positive relative to COM, and if the polarity is reversed, the output terminal will be out of control (fully open or fully closed).
● ① and ② ports are connected to the secondary winding of the synchronous transformer, which allows a voltage of 18VAC ± 5VAC and a power of 2W.
● The +5V voltage signal on ⑦ port is only provided for the manual potentiometer (the selected resistance is between 2-10KΩ), not for other uses.
● The pulse level of the ④ port is around 10V, and the maximum output current is 12mA. The phase-shift trigger module can directly match the random conduction type solid state relay produced by our company.
● The AC power grid frequency of the phase-shift trigger module must be 50 Hz.
● The control signal can be divided into automatic control signal (Type E, 0-5VDC; Type F, 0-10VDC; Type H, 1-5VDC; Type G, 4-20mA), and manual control signal (potentiometer).

Note:
1) Before installation and use, please confirm whether the specifications (such as input current, input voltage, output current, output voltage and etc.) of the single phase solid state relay phase-shift trigger module meet the requirements of the application.
2) MGR-DT series regulator module can replace SSR-JKWK series. MGR-DT series integrates the synchronous transformer, the phase detection circuit, the phase-shift trigger circuit and the power thyristor output circuit. MGR-DT series has a lower overall price and cost of use.
3) If the requirements of your application are low (e.g., no need for complete isolation of input signal and output voltage, only one type of control signal, etc.), then you can use the following instead: MGR-R series potentiometer type voltage regulator, MGR-HVR series industrial potentiometer type voltage regulator, MGR-1VD series voltage signal type voltage regulator, MGR_DV series pulse signal type voltage regulator.

1.2 Three Phase Solid State Relay Phase-shift Trigger Module

SSR-3JK Series

This three phase solid state relay phase-shift trigger module integrates the three phase phase-detection circuit, the phase-shift circuit, the control circuit and the trigger circuit. SSR-3JK series needs to be equipped with an TB-3 synchronous transformer and three random conduction type solid state relays (or random fire solid state relay), so it is also called a three phase random conduction type solid state relay phase-shift trigger module (or three phase random fire ssr phase-shift trigger module).
● The entire circuit can be applied to 380VAC (300-420VAC) 50Hz power grid. The three phase input cables (R, S, T) in the main circuit has no phase sequence requirements, but the input control cables must be strictly one-to-one correspondence with the output terminals of the solid state relay, TB-3, and SSR-3JK series, otherwise the system will not work normally.
● CON must be positive relative to COM, and if the polarity is reversed, the output terminal will be out of control (fully open or fully closed).
● The four COM ports of SSR-3JK series are connected together inside the module to form a weak current "ground" (completely isolated from the neutral "N line" of the synchronous transformer), and when the automatic control mode is selected, it will be connected to the DC "ground" controlled by the external circuit.
● The power of the three phase load should be balanced.
● SSR-3JK series and TB-3 generate very little heat and do not need to be mounted on a heat sink.
● The control signal can be divided into automatic control signal (Type E, 0-5VDC; Type F, 0-10VDC; Type H, 1-5VDC; Type G, 4-20mA), and manual control signal (potentiometer).

Note:
1) Before installation and use, please confirm whether the specifications (such as input current, input voltage, output current, output voltage and etc.) of the three phase solid state relay phase-shift trigger module meet the requirements of the application.
2) MGR-STY series regulator module can replace SSR-3JK series. MGR-STY series integrates the three phase phase-detection circuit, the phase-shift circuit, the trigger circuit and three sets of reverse-parallel SCR thyristor, MGR-STY series has a lower overall price and cost of use.

§2. How to wire the Thyristor Phase-shift Trigger Module?

2.1 Single Phase Thyristor Phase-shift Trigger Module

SCR-JKK, TRIAC-JKK Series

This single phase thyristor phase-shift trigger module series needs to be equipped with an 18VAC synchronous transformer, and a power thyristor output circuit. According to the output thyristor type of the power thyristor output circuit, it can be divided into SCR-JKK series, TRAIC-JKK series. SCR-JKK series is used for the SCR power thyristor output circuit; TRAIC-JKK series is used for TRAIC power thyristor output.
● The ① and ② ports are connected to the 18VAC secondary winding of the synchronous transformer to offer the power supply and the synchronous reference voltage for the phase-shift trigger circuit.
● The ③ port is connected to the trigger gate of the thyristor.
● The ④ port is connected to the anode of the SCR thyristor or the main electrode T1 of the TRIAC thyristor.
● The ⑤ port is the internal common ground terminal. If the phase-shift trigger circuit is controlled by the external automatic control circuit, the ⑤ port will be connected to the ground of the external control circuit.
● The ⑥ port is the control terminal. When there is a 0.5V voltage signal inputted to the ⑥ port, the thyristor on the ③ and ④ ports will be triggered in the phase-shift range of 180°-0°.
● The ⑦ port is the +5V voltage terminal generated inside the module. If the ⑤, ⑥, ⑦ ports are connected to the external potentiometer to apply the manual control method, the ⑦ port acts as the power supply for it; if the control signal is provided by external control circuit to apply the automatic control method, the ⑦ port should remain unavailable.
● CON must be positive relative to COM, and if the polarity is reversed, the output terminal will be out of control (fully open or fully closed).
● ① and ② ports are connected to the secondary winding of the synchronous transformer, which allows a voltage of 18VAC ± 5VAC and a power of 2W.
● The +5V voltage signal on ⑦ port is only provided for the manual potentiometer (the selected resistance is between 2-10KΩ), not for other uses; it should be noted that the type G (4-20mA as control signal) cannot be manually adjusted by the potentiometer, so the +5V port is useless for the type G.
● The phase-shift trigger module can trigger thyristors within 1000A current (please pay attention to the connection method of the trigger terminal).
● In the RC circuit, the resistance is generally 15-30Ω, 3W or more; the capacitance is 0.1-0.47μF, 250VAC/400VAC or above; and the positions of R and C are not interchangeable.
● One end of C should be connected to the cathode of the single phase thyristor or the main electrode T2 of the TRIAC).
● The control signal can be divided into automatic control signal (Type E, 0-5VDC; Type F, 0-10VDC; Type H, 1-5VDC; Type G, 4-20mA), and manual control signal (potentiometer).

Note:
1) Before installation and use, please confirm whether the specifications (such as input current, input voltage, output current, output voltage and etc.) of the single phase thyristor phase-shift trigger module meet the requirements of the application.
2) MGR-DT series half-wave type regulator module（one SCR as the output component）can replace SCR-JKK series. MGR-DT series ordinary type regulator module（one TRIAC as the output component）can replace TRAIC-JKK series. MGR-DT series integrates the synchronous transformer, the phase detection circuit, the phase-shift trigger circuit and the thyristor output circuit. MGR-DT series has a lower overall price and cost of use.

Figure 2.1A, SCR-JKK series circuit wiring diagram

Figure 2.1B, SCR-JKK series circuit wiring diagram (static dv/dt improved version)

Figure 2.1C, TRAIC-JKK series circuit wiring diagram 1

Figure 2.1D, TRAIC-JKK series circuit wiring diagram 1 (static dv/dt improved version)

Figure 2.1E, TRAIC-JKK series circuit wiring diagram 2

2.2 Single Phase Dual Channel Thyristor Phase-shift Trigger Module

SCR-JKK/2 Series

The principle of the single phase dual channel thyristor phase-shift trigger module (SCR-JKK/2 series) is: On the basis of SCR-JKK series, add one thyristor trigger signal of the negative half period to achieve the simultaneous phase-shift adjustment of the positive and negative half periods of two single phase thyristors in the single phase circuit. Except for it, the parameters and performance of SCR-JKK/2 series are the same as SCR-JKK series.
● PAY SPECIAL ATTENTION: TRIAC-JKK, SCR-JKK and SCR-JKK/2 these three types modules adopt strong electric trigger mode, so when the module cannot be triggered to conduction due to the damage of the thyristor gate, if there still remains voltage on the trigger module, the current of the power grid will enter from the A port and then pass through the G port to the load, and the vast majority of the power grid voltage will be applied to both ends of A and G, after that there will be huge heat generated caused by the high voltage and current, which will burn and damage internal components connected to the both ends of A and G in few seconds. It is the main deficiency of these three kinds of modules that the trigger module will be damaged caused by the damage of the gate of the thyristor.
● IMPROVEMENT MEASURES: For these phase-shift trigger module series, in order to improve the static dv/dt of the voltage regulation system (consisting of the phase-shift trigger module, the thyristor and the synchronous transformer) and also prevent the voltage regulation system from being damaged by the transient voltage (once switched on and powered on), the load circuit should be changed the following static dv/dt improved version: The A port of the phase-shift trigger module should be connected to the midpoint of the corresponding RC snubber loop, and the connection method of R and C must be as shown in the figure (that is, one end of R should be connected to the anode of the single-phase thyristor or the main electrode T1 of the TRIAC, and one end of C should be connected to the cathode of the single phase thyristor or the main electrode T2 of the TRIAC), and the positions of R and C are not interchangeable. The resistance of the RC circuit is generally 15-30Ω, 3W or more, and the capacitance is 0.1-0.47μF, 250VAC/400VAC or more.

Note:
1) Before installation and use, please confirm whether the specifications (such as input current, input voltage, output current, output voltage and etc.) of the single phase dual channel thyristor phase-shift trigger module meet the requirements of the application.
2) If SCR-JKK/2 seires is used for voltage regulator circuit, MGR-DT series can replace SCR-JKK/2 series. MGR-DT series integrates the synchronous transformer, the phase detection circuit, the phase-shift trigger circuit and the thyristor output circuit. MGR-DT series has a lower overall price and cost of use.
3) If SCR-JKK/2 seires is used for voltage regulation rectifier circuit, MGR-DQZ series can replace SCR-JKK/2 series. MGR-DQZ series integrates the fully-controlled bridge rectifier (consisting of four SCR thyristors), the phase-shift circuit and the trigger circuit. MGR -DQZ series has a lower overall price and cost of use.

Figure 2.2A, SCR-JKK/2 series circuit wiring diagram 1

Figure 2.2B, SCR-JKK/2 series circuit wiring diagram 2

Figure 2.2C, SCR-JKK/2 series circuit wiring diagram 3

Figure 2.2D, SCR-JKK/2 series circuit wiring diagram 1 (static dv/dt improved version)

Figure 2.2E, SCR-JKK/2 series circuit wiring diagram 2 (static dv/dt improved version)

2.3 Three Phase Thyristor Phase-shift Trigger Module

SX-JK Series

The three phase thyristor phase-shift trigger module integrates the three phase phase-detection circuit, the phase-shift circuit, the control circuit and the trigger circuit. This single phase thyristor phase-shift trigger module series needs to be equipped with an TB-3A/TB-3Z synchronous transformer, and a three phase power thyristor output circuit. SX-JK series can be divided into four series: three phase SCR type phase-shift trigger module (SX-JKA series), three phase TRIAC type phase-shift trigger module (SX-JKT series), three phase fully-controlled rectification phase-shift trigger module (SX-JKZ series) and three phase half-controlled rectification phase-shift trigger module (SX-JKB series).
● The three phase AC voltage regulation circuit has no phase sequence requirements, but the three phase input cables (R, S, T) in the three phase rectifier circuit has requirements for the phase sequence. Besides, the input cables and the thyristor (such as R corresponding to the anode of KP1 and the cathode of KP4), the synchronous transformer module and the three phase trigger circuit must be strictly one-to-one correspondence, otherwise the system will not work normally.
● The trigger terminals of the three phase trigger circuit (such as A1, G1, ..., A6, G6) adopt the strong current trigger mode, which can trigger any SCR thyristor within 1000A current. The connection method of the so-called strong current trigger mode is to connect A1 and G1 (corresponding to the anode and gate of KP1) instead of the usual cathode and gate.
● CON must be positive relative to COM, and if the polarity is opposite, the output terminal will be out of control (fully open or fully closed).
● The power of the three phase load should be balanced.
● In the RC circuit, the resistance is generally 15-30Ω, 3W or more; the capacitance is 0.1-0.47μF, 250VAC/400VAC or above; and the positions of R and C are not interchangeable.
● One end of C should be connected to the cathode of the single phase thyristor or the main electrode T2 of the TRIAC).
● The control signal can be divided into automatic control signal (Type E, 0-5VDC; Type F, 0-10VDC; Type H, 1-5VDC; Type G, 4-20mA), and manual control signal (potentiometer).

Note:
1) Before installation and use, please confirm whether the specifications (such as input current, input voltage, output current, output voltage and etc.) of the three phase thyristor phase-shift trigger module meet the requirements of the application.
2) MGR-STY series can replace SX-JKA series and SX-JKT series. MGR-STY series integrates the three phase phase-detection circuit, the phase-shift circuit, the trigger circuit and three sets of reverse-parallel SCR thyristors. MGR-STY has a lower overall price and cost of use.

Figure 2.3A, SX-JKA series circuit wiring diagram

Figure 2.3B, SX-JKA series circuit wiring diagram (static dv/dt improved version)

Figure 2.3C, SX-JKT series circuit wiring diagram

Figure 2.3D, SX-JKZ series circuit wiring diagram

Figure 2.3E, SX-JKZ series circuit wiring diagram (static dv/dt improved version)

Figure 2.3F, SX-JKB series circuit wiring diagram