Temperature Control System Solution Provider - Shanghai Yuexi Trade Development Co., Ltd

Shanghai Yuexi Trade Development Co., Ltd

Phone:(+86)189 1548 0537

Phone

(+86)189 1548 0537
PAC15P Single-phase SCR Thyristor Trigger Board
  • Soft-start Function

  • Overheat Protection

  • Output Voltage Limitation

  • Phase-angle & Burst-firing Mode

  • Designed for Resistive Loads

Product Details
Technical Specifications
Product Model
Product size

PAC15P Single-Phase SCR Trigger Board

The PAC15P features an all-digital circuit design and is compatible with both 220V and 380V AC single-phase power supplies. It utilizes phase-angle control for voltage regulation and offers two power regulation modes: fixed-cycle and variable-cycle burst firing.

Key Features

  • Soft-start/Soft-stop: Smooth ramp-up and shutdown

  • Overtemperature protection: Integrated heatsink thermal detection

  • Compact size with aesthetic design

  • Low output threshold for precise control

  • Wide frequency adaptability (suitable for generator power sources)

  • Cost-effective single-phase triggering solution

1  Load Power Supply Single-phase 220V or 380V AC ±10%, 50Hz.
2  Control Board Power & Consumption
Universal input: 220V or 380V AC ±10%, 50Hz.
Power consumption: Max. 2W.
3  Control Input
Default: 4–20mA DC, receiving impedance 120Ω.
Optional (must be specified when ordering):
0–5V DC, input resistance >20kΩ.
0–10V DC, input resistance >20kΩ.
4 LED Status Indicators
LED Name
Function
State
Color
Description
POWER
Power Indicator
State 1
Red (ON)
Normal operation (output enabled)
State 2
Red (Slow Blink)
Heatsink overtemperature alarm (output disabled)
State 3 
Red (Fast Blink)
Standby mode
State 4
Triple flash then constant red
Self-test passed
IN
 Input Signal Indicator
State 1
(Green ON)  Control signal > 0
State 2
(Green OFF)
 Control signal = 0

5  Control Modes
Phase-angle control: Continuous voltage adjustment.
Power regulation:Zero-crossing (burst-firing) for resistive loads.

Special mode for inductive loads.

Single-phase full-wave rectification.

Single-phase half-wave rectification.
6 Output Resolution Phase-angle: 0.2°.
Power regulation: 20ms.
7 Phase-shift Range 0~175°
8  Drive Output Pulse width modulation: 8°120° trigger pulse.Drives SCR modules: Output current 300mA.
9 Manual Adjustment
External 10kΩ, 2W potentiometer for manual control.
10 Soft-start/Soft-stop time
 Fixed 15 seconds (phase-angle control mode) 
11 Heatsink overtemperature protection
75°C thermal switch
12 Start/Stop switch
External switch
13 Power regulation/Voltage regulation switching (optional)
External switch
14 Operating environment
Temperature: -10 to +40°C
Humidity: ≤90% RH (non-condensing)
Altitude: ≤2000 m
15 Storage temperature
-10 ~ +50℃
16 Additional requirements
Well-ventilated, avoid direct sunlight or heat radiation, free of corrosive/flammable gases
17 Insulation resistance
Module output vs. casing: 2000VDC/1 min
Control board power terminal vs. casing: 2000VDC/1 min

PAC15P