English
Español
Our Products
Featured Product Lineup
Explore our comprehensive range of high-quality refrigeration equipment designed for industrial and commercial applications.
Reference unit
Capacity at 20°C85 kW
Capacity at 15°C74 kW
Compressor2 × scroll, tandem
CondenserAir-cooled, EC fans
RefrigerantR410A, 24 kg
Power supply400V, 3-phase, 50Hz
Rated current148 A per phase
Net weight, dry1040 kg
Controller specification
Display4-digit LED, 0.1°C
Inputs2 × PT100, 1 × 4–20 mA
OutputsRelay, 4–20 mA, SSR drive
Control modePID with auto-tune
Alarm outputs2 × SPDT relay
Ambient rating0–50°C, IP54 front
Compliance CE marked under LVD 2014/35/EU and EMC 2014/30/EU. Refrigerant data sheet per EN 378. RoHS 2 compliant. Declaration of conformity supplied with each unit.
This industrial chiller is supplied with a digital PID temperature controller that provides a numeric setpoint and readout, alarm thresholds, and communication access to the control loop, in place of a mechanical thermostat. The controller measures leaving water temperature from a PT100 sensor and modulates compressor and fan output to hold the setpoint rather than switching at a fixed differential.
The configuration is specified where the process requires a defined and repeatable water temperature, where operators need a numeric readout rather than an indicator light, or where the control loop must be monitored and adjusted remotely. Typical applications include process cooling in laboratories, plastics processing, laser systems, and equipment where temperature affects product or measurement results.
Control Functions
Setpoint and readout Setpoint entered from the front panel in 0.1°C increments. Display shows measured value and setpoint simultaneously. Settings retained through power interruption without battery backup.
PID with auto-tune Proportional, integral, and derivative terms adjustable from the panel. Auto-tune function derives initial values from the actual circuit response, avoiding manual tuning by trial at commissioning.
Alarm thresholds High and low temperature alarms with independent setpoints and time delays. Alarm outputs are SPDT relays for connection to the process interlock or plant annunciator. Alarm history retained.
Communication access Modbus RTU exposes setpoint, measured value, PID terms, alarm state, and alarm history. Setpoint can be changed remotely where the site's control philosophy permits it.
Commercial and Technical Advantages
Tighter control than a thermostat PID control holds water temperature within ±0.3°C of setpoint, compared with the wider band typical of a mechanical thermostat switching at a fixed differential. Relevant where process temperature affects product quality or measurement accuracy.
Numeric readout for operators Measured temperature and setpoint are displayed numerically. Operators can read the actual condition rather than inferring it from an indicator light, which supports troubleshooting and process records.
Auto-tune at commissioning The auto-tune function derives PID values from the actual circuit response, so the loop is not left with default terms that produce overshoot or sluggish response. Tuning is repeatable if the circuit is later modified.
Separate alarm and control setpoints Alarm thresholds are set independently of the control setpoint, with time delays to prevent nuisance trips during load changes. This is a practical requirement where alarms are connected to a process interlock.
Remote access to the loop Setpoint, measured value, and PID terms are accessible via Modbus. Parameters can be reviewed and adjusted from a plant system rather than requiring a visit to the chiller, which matters for remotely located units.
Replaceable controller module The controller is a replaceable module with plug-in connections. Replacement does not require rewiring the panel, and configurations can be transferred. Controller modules are held as service parts for 10 years.
Technical Parameters
Cooling
Capacity at 20°C water85 kW
Capacity at 15°C water74 kW
Capacity at 10°C water62 kW
Water setpoint range5°C to 25°C
Temperature stability±0.3°C
RefrigerantR410A, 24 kg
Compressor2 × scroll, tandem
Hydraulic
PumpIntegrated, centrifugal
Flow rate260 L/min at 0.38 MPa
Buffer tank320 L
ConnectionsDN65 flange
FiltrationY-strainer, 30 mesh
Temperature sensorPT100, leaving water
Flow protectionFlow switch, interlocked
Electrical and physical
Power supply400V AC, 3-phase, 50Hz
Rated current per phase148 A
Controller power24V DC, internal
Sound pressure at 5 m63 dB(A)
Dimensions (L×W×H)2900 × 1350 × 1780 mm
Net weight, dry1040 kg
CommunicationModbus RTU, RS-485
Deployment Contexts
01 Laboratory and analytical cooling Instruments and test rigs where the coolant temperature is a recorded process parameter, and where a numeric readout and stable setpoint are required for the test record.
02 Plastics and mould temperature control Mould cooling where coolant temperature affects cycle time and part dimensions, and where a defined setpoint must be held across the production run.
03 Laser and optical equipment Laser sources and optics where coolant temperature affects beam stability, and where the controller setpoint is part of the equipment's specified operating conditions.
04 Remotely monitored installations Sites where the chiller is monitored from a plant system rather than attended locally, and where setpoint and alarm state must be accessible over Modbus.
Selection and Installation Notes
Sensor location and immersion The PT100 sensor is installed in the leaving water line at the factory with a defined immersion depth. Where the site requires a sensor at a different location, the control response changes and the PID terms must be re-tuned. Confirm the measurement point against the process requirement.
Setpoint and alarm configuration Control setpoint and alarm thresholds are configured at commissioning. Alarm time delays should be set against the process response time to avoid nuisance trips during load changes. Record the configured values for maintenance reference.
Auto-tune procedure Auto-tune requires the circuit to be at stable flow and a representative load. Running auto-tune at no load or with fluctuating flow produces unsuitable terms. The procedure is described in the commissioning checklist and should be repeated if the circuit is modified.
Remote setpoint changes Where setpoint may be changed remotely, define the permitted range and the authority of the plant system against the local panel. Restricting the remote range prevents an inadvertent setpoint change from affecting the process or the chiller operating envelope.
Controller environment The controller front is rated IP54, but the panel interior must remain within the specified ambient range. Where the plant room is hot, confirm the panel cooling arrangement. Controller faults attributable to over-temperature are not covered by warranty.
Maintenance interval Verify sensor accuracy annually against a reference thermometer. Check alarm function and relay operation annually. Review PID terms where the circuit has been modified. Strainer cleaning quarterly. Condenser coil cleaning quarterly. Refrigerant verification annually.
Procurement FAQ
A thermostat switches at a fixed differential and gives a wider temperature band with no numeric readout. A digital PID controller measures the actual temperature, displays it numerically, and modulates output continuously to hold a tighter band. It also provides separate alarm thresholds and communication access, which a mechanical thermostat does not.
Yes, setpoint is writable over Modbus. Whether remote changes are permitted depends on the site's control philosophy. The controller can be configured with a restricted writable range so that remote changes cannot move the setpoint outside the process or chiller operating envelope. Confirm the intended arrangement at commissioning.
The controller has an auto-tune function that derives initial PID values from the circuit response under stable flow and representative load. Manual adjustment is available where the auto-tune result requires refinement. Tuning should be repeated if the circuit or load characteristics change significantly.
The controller detects an open or short circuit at the sensor input, stops the compressor, and raises an alarm. This prevents operation without temperature feedback. The sensor is a replaceable PT100 element; spares are held as service parts.
Dimensional drawing, wiring diagram including controller I/O, capacity table against water temperature, pump curve, controller manual with parameter list, Modbus register map, refrigerant data sheet, commissioning checklist including auto-tune procedure, and declaration of conformity under LVD and EMC directives.
Standard warranty is 24 months from commissioning or 30 months from shipment. Compressor coverage extends to 60 months. Sensors and controller modules are held as service parts for a minimum of 10 years. Warranty on the controller is conditional on installation within the specified ambient range.
Product Categories
Complete Refrigeration Portfolio
Comprehensive range of industrial refrigeration equipment — standard & custom
Air Cooled Chiller
Efficient air-cooled systems for plastics, laser, food & diverse industries
energy savingWater Cooled Chiller
High-performance water-cooled industrial chillers with superior COP
high efficiencyAir Cooled Box Chiller
Compact, ready-to-use air cooled box chillers for small to medium loads
plug & playWater Cooled Box Chiller
Space-saving water cooled box type chillers with integrated pump & tank
integratedAir Cooled Screw Chiller
Heavy-duty screw compressor, air cooled — for large industrial applications
heavy dutyWater Cooled Screw Chiller
High-capacity water cooled screw chillers for continuous operation
reliableWater Cooled Screw Evaporative Cooling Chiller
Evaporative assisted cooling for maximum efficiency in hot climates
ecoProfessional Customization
Tailor-made solutions — from design to manufacturing, for your specific needs
CUSTOM ISO 9001 · CE Certified
Shanghai Soouney Refrigeration Equipment Co., Ltd.
A large-to-medium-sized high-tech enterprise integrating R&D, production and sales. Upholding "integrity, quality, service and innovation" — delivering reliable cooling solutions to the world.
11+
Export Countries
200+
Projects Delivered
19+
Years of Innovation
100%
Client Satisfaction
2007
Engineering Excellence in Refrigeration
Shanghai Soouney was founded with a vision to become a leading force in the refrigeration industry. We are China Industrial Chiller with Digital Temperature Controller Manufacturers and Custom Industrial Chiller with Digital Temperature Controller Suppliers. Today, we are a renowned brand in cabinet air conditioners and industrial chillers, recognised by professionals worldwide.
Rooted in the Chinese market, we provide reliable refrigeration solutions to clients across the globe — from standard products to professional customisation.
From standard products to professional customization — we deliver precision cooling.
R&D Driven
High starting points, stringent standards — continuous innovation
Integrity & Trust
Long-term partnerships built on transparency and after-sales support
Certified Quality
ISO 9001, CE, and industry-specific approvals across all lines
Global Mindset
Serving 40+ countries with tailored refrigeration solutions
"We don't just cool equipment — we build trust, one project at a time."
Why Soouney
Driven by Quality & Innovation
Committed to delivering excellence through continuous improvement and customer-centric solutions.
R&D Focus
High starting points, stringent standards — continuous product improvement
Integrity & Service
Long-term partnerships built on trust, transparency and after-sales support
Global Presence
Rooted in China, serving worldwide with reliable refrigeration solutions
Certified Quality
ISO 9001, CE, and industry-specific approvals for all product lines
