Description
Watlow CLS216 (Anafaze CLS200 Series) 16-Loop Multi-PID Temperature Control Module
Product Description
The CLS216 is a high-density multi-loop PID temperature controller module manufactured by Watlow under the legacy Anafaze CAS200 / CLS200 product family. This board provides 16 independent control loops within a single compact unit, replacing numerous standalone single-loop controllers to save cabinet space and reduce wiring complexity. It accepts universal sensor inputs and executes closed-loop PID or on/off temperature regulation with built-in ramp-and-soak profile programming. Integrated serial communication enables host system connection for recipe management, remote setpoint adjustment and real-time data acquisition. Widely used for multi-zone thermal processing, this module is a legacy industrial control component with proven stability for continuous thermal-critical manufacturing processes.
Technical Specifications
- Part Number: CLS216
- Manufacturer: Watlow (Anafaze)
- Series: CLS200 / CAS200
- Control Loops: 16 independent heat/cool control loops
- Analog Inputs: 16 single-ended universal analog inputs
- Supported Sensors: Thermocouple (J,K,T,R,S,B,E,N), Pt100 RTD, 0-5V, 4-20mA
- A/D Resolution: 14-bit
- Accuracy: ±0.1% of full span
- Digital Inputs: Up to 8 (recipe select, remote run/stop)
- Digital Outputs: Up to 34 open-collector outputs for SSR/relay drive
- Communication: RS232, RS485; Modbus RTU / Anafaze proprietary protocol
- Power Supply: 15–24 VDC, max 1A
- Sampling Speed: 1.5 samples per second per channel
- Operating Temperature: 0°C ~ +50°C
- Approvals: CE, UL, CSA
- Status: Discontinued legacy spare part

CLS216
Key Features
- 16 independent PID control loops in one compact module, saving panel space
- Universal analog input interface compatible with RTD and multiple thermocouple types
- Built-in auto-tuning PID algorithm, supports heat/cool dual action control
- Programmable ramp-and-soak temperature profiles with recipe storage
- Comprehensive sensor fault detection: open circuit, short circuit, process deviation alarm
- RS485 Modbus RTU for seamless integration with PLC, DCS and SCADA
- Multiple digital outputs to drive solid-state relays or mechanical relays
- Watchdog circuit and hardware fault indication for enhanced process safety
Application Scenarios
- Industrial multi-zone thermal ovens and furnaces
- Plastic extrusion barrel segmented temperature control
- Composite curing and autoclave thermal processes
- Semiconductor thermal processing equipment
- Packaging and heat sealing machinery
- Food & beverage thermal treatment lines
- Pharmaceutical drying and batch thermal reactors
- Aerospace composite heat treatment systems

CLS216
Matching / Auxiliary Components
- CLS series rack chassis and backplane
- Terminal block assembly for sensor and output wiring
- 24VDC industrial power supply
- Solid state relays (SSR) for heater control
- RTD / thermocouple temperature sensors
- RS485 shielded communication cable
- Modbus gateway for connection to DCS / SCADA
- Configuration software for recipe and loop parameter setup
Related Watlow Anafaze CLS200 Series Models (9 pcs)
- CLS204 4-Loop Temperature Controller
- CLS208 8-Loop Temperature Controller
- CLS216 16-Loop Temperature Controller
- CLS200-CPU Main Processor Board
- CLS200-AN Analog Expansion Board
- CLS200-DIO Digital I/O Module
- CLS200-COMM Serial Communication Board
- CAS200-RM Rack Mount Housing
- CLS200-PWR Power Supply Module

