SZ-7552T | Dual Compressor Temperature Controller with Load Sharing & Surge Protection
The SZ-7552T Temperature Controller is designed for chillers and dual-compressor cooling systems. It offers load sharing, run-hour equalization, surge protection, and high/low temperature logs for reliable and efficient operation.
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Product Summary
The SZ-7552T is a high-performance temperature controller built for chillers and industrial cooling systems with dual compressors. Featuring independent setpoints, sequential/independent modes, and compressor fault inputs, it ensures balanced operation and extended equipment life. With 0.1°C resolution, surge protection, and run-hour equalization, it delivers precision, safety, and durability.
Key Features
Controls two compressors with independent setpoints, differentials, and delays
Sequential or independent modes for flexible operation
Run-hour equalization to balance compressor usage
Compressor cycling and load sharing to prevent overloading
Delay protection between compressor starts/stops to reduce surge
Cooling & Heating mode selection
Touch-sensitive keypad for ease of use
Digital inputs for compressor faults (potential free)
High & Low Temperature Logs for monitoring and diagnostics
Temperature Range: 0.0°C to 50.0°C
Resolution: 0.1°C / 1°C (settable)
Probe Input: 2 × NTC
Outputs: Compressor 1 – 10A, Compressor 2 – 10A
Housing: Compact panel-mount (71 × 29mm cutout)
Applications
Chillers
Multi-compressor refrigeration systems
Industrial cooling applications
Product Benefits
Ensures longer compressor life through load sharing and run-hour equalization
Protects against electrical surges with startup delay management
Enhances safety with individual compressor fault detection
Maintains precise cooling control with 0.1°C resolution
Provides reliable performance even in case of sensor failure
FAQ
Q1: Can SZ-7552T control two compressors simultaneously?
A1: Yes, it can operate compressors in sequential or independent modes.
Q2: What safety features are included?
A2: It has surge protection, run-hour equalization, compressor cycling, and fault inputs for each compressor.
Q3: What is the temperature range?
A3: 0.0°C to 50.0°C with 0.1°C / 1°C resolution (settable).
Q4: Does it log temperature data?
A4: Yes, it maintains high and low temperature logs.
Q5: What applications is it best suited for?
A5: It is ideal for chillers, dual-compressor refrigeration, and industrial cooling systems.