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
PAC26P / PAC26P-D Single-Phase SCR Trigger Control Boards
◆ Frequency adaptive
◆ High precision power regulator
◆ Slow start, emergency stop
◆ Constant current/constant voltage/current limiting
◆ Overtemperature and overcurrent alarm

◆ Suitable for resistive and inductive loads

◆ CE certification

Product Details
Technical Specifications
Product Model
Product size
The PAC26P-D represents a next-generation innovation in high-power thyristor control technology. This intelligent single-phase SCR trigger board integrates voltage regulation, constant-current control, and current limiting into one compact solution, designed for demanding industrial environments.
1 Load Control Element
hyristor (SCR) Module
2 Load Power Supply
Single-phase 220V AC  Three-phase 380V AC ±10% 50HZ
3 Control Input
4~20mA   input, receiving impedance 120Ω
4 Output Resolution
Phase Control: 0.6°; Power Control: 20ms
5 Phase Shift Range
0~175°
6 Drive Output
1). Output: 12V pulse, variable pulse width, maximum drive current: < 30mA. Compatible with P-type SSR, integrating voltage regulation/power control functions.
2). Pulse transformer output: slotted pulse, compatible with MKK/MTC anti-parallel modules, enabling single-phase voltage regulation and full-control rectification, but without power control mode.
7 LED Status Indicator
Green: INPUT signal linear indicator light.
Tricolor status lights: RUN green operation light; ALM red alarm light; STOP yellow flashing standby light。
8

Soft Start and Soft Shutdown RS for External 

Actuator Switch

No Voltage Contact Input
Closed (ON): Soft shutdown, fixed time of 3 seconds;
Open (OFF): Operation. (Soft start time set by internal potentiometer P3, 0.2 to 120 seconds)
Not Connected: Operational status.

9

Automatic soft start and 

emergency stop during operation

Emergency stop due to overcurrent or overtemperature during operation, with the protection response time for overcurrent and overtemperature not exceeding one power cycle (20ms).
10 70℃ Overtemperature Protection

Voltage-free Normally Closed Contact
Open Circuit: Overtemperature
Reset: After troubleshooting,reset the start/stop switch or power on again.

11 Alarm Relay
One set of normally open contacts (pure resistance 1A 250VAC).
12 Alarm Type
Overcurrent, Heatsink Overtemperature.
13 CT Maximum Current Limit

External 10K potentiometer, adjustment range 20% to 100%.
To cancel: Leave the CT input terminal open or adjust the external potentiometer R3 to maximum.

14 Overcurrent Protection

Adjusted by internal potentiometer P2. Reference point 1V;
Overcurrent multiple: Twice the reference set point (=2V)
Action time: <20ms.

PAC26P-D