Slim Three-Phase Power Controllers with LED Display SPR3 Series

Product Overview

The SPR3 series three-phase power controllers are designed for compact installations, making them an ideal choice for environments where space is limited. With a slim body measuring just 105 mm wide, these controllers fit easily into tight spaces without compromising on functionality. The integrated LED display provides real-time monitoring of critical parameters such as control input, load voltage, load current, load power, load resistance, and heat-sink temperature. These controllers offer versatile control methods, including phase control, cycle control, and ON/OFF control, with an option for feedback control (constant current, constant voltage, and constant power) to ensure precise and stable power management. The SPR3 series is highly efficient and suitable for a variety of settings, particularly in power transmission and electric power distribution systems.

Features

• Slim and Elegant Design: The SPR3 series controllers boast a sleek and compact design, measuring only 105 mm in width, making them perfect for installations with limited space.
• LED Display: Equipped with a three-digit 7-segment LED display, these controllers allow for real-time monitoring of key parameters, including control input, load voltage, load current, load power, load resistance, and heat-sink temperature.
• Stable Power Control: Offering multiple control methods such as phase control, cycle control, and ON/OFF control, with the added option of feedback control for constant current, constant voltage, and constant power. This ensures stable and precise power management.
• Versatile Communication: The SPR3 series includes models with RS485 communication output using the Modbus RTU protocol. This allows for seamless integration with PCs for parameter configuration and monitoring via the DAQMaster software.
• Comprehensive Alarm Functions: These controllers are equipped with various alarm functions to enhance safety and reliability. Alarms include overcurrent, overvoltage, heater disconnection, fuse break, heat-sink overheat, and SCR (Silicon Controlled Rectifier) error.
• Easy Installation and Maintenance: Designed for easy installation with mounting brackets, the SPR3 series also features a straightforward process for fuse replacement. The inclusion of an interphase insulating barrier further simplifies maintenance.
• High Performance SCR Diode: Utilizes high-performance SCR (Silicon Controlled Rectifier) diodes, ensuring efficient and reliable operation across all models.

Communication Interface

The SPR3 series supports RS485 communication with Modbus RTU protocol, allowing for easy integration into various industrial networks. Key features include:

• Protocol: Modbus RTU
• Connection: Up to 31 units (addressable from 01 to 99)
• Communication Distance: Up to 800 meters
• Data Transfer Rates: Selectable speeds ranging from 2,400 to 38,400 bps

This robust communication capability ensures that the controllers can be easily managed and monitored within complex industrial systems.

Environmental Tolerance

The SPR3 series is built to withstand a wide range of environmental conditions, making it suitable for various industrial applications:

• Operating Temperature: -10 to 55°C
• Storage Temperature: -20 to 80°C
• Humidity: 35 to 85% RH (operational and storage)

These controllers are designed to perform reliably even in challenging environments, ensuring long-term durability and performance.

Installation and Dimensions

The SPR3 series is designed for easy installation, with detailed dimensions provided to ensure proper fitting in various setups. The slim design, paired with mounting brackets, facilitates quick and hassle-free installation, while the compact dimensions ensure that the controllers occupy minimal space.

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