Watlow CLS216 105996005

Technical & Performance Specifications

• Core Control Capacity: 16 independent heat/cool PID control loops
• Sensor Input Types: Thermocouple (all standard types), RTD Pt100/Pt1000, linear DC voltage, linear DC current, pulse frequency
• Input Measurement Accuracy: ±0.001°C for Type K thermocouple; total error ≤0.05% full scale
• Temperature Measurement Range: -268°C ~ 1371°C (thermocouple dependent)
• Noise Rejection Index: 120 dB at 60 Hz industrial frequency
• Temperature Coefficient: 40 ppm/°C
• Digital Output Count: 34 configurable logic outputs for SSR driving, alarm interlock
• Communication Interfaces: EIA/TIA-232, EIA/TIA-485 serial bus
• Built-in Storage: 8 complete process job recipes for one-touch program switching
• Isolation Rating: 4000 VRMS input-output galvanic isolation
• Physical Dimensions: 1/8 DIN standard industrial enclosure
• Operating Ambient Temperature: -20°C ~ +80°C (forced air cooling required at full 16-loop load)
• Protection Rating: IP67 front panel; IP20 rear wiring compartment
• Certifications: UL, cUL, CE, RoHS compliant

Function Features

1. Full auto-tune PID algorithm, eliminates manual parameter calibration
2. Built-in ramp/soak batch temperature sequencing for thermal forming, curing processes
3. Advanced control logic support: cascade control, ratio control, differential temperature regulation, remote analog setpoint tracking
4. Real-time sensor fault detection: open-circuit, short-circuit, reversed polarity sensor diagnostic
5. Independent high/low process deviation alarm for each individual loop
6. Menu-driven full-text LCD display with multi-language operator interface
7. Standalone offline operation and host computer data logging dual operation modes
8. Zero-cross or random phase SSR trigger output configurable per channel

Working Principle

Material & Structural Composition

• Front housing: High-impact flame-retardant ABS plastic with scratch-resistant transparent protective cover
• Internal chassis: Cold-rolled steel anti-electromagnetic shielding frame
• PCB substrate: FR4 high-temperature resistant circuit board with gold-plated signal contacts
• Terminal blocks: Tin-plated copper screw terminals with locking wire retention

Advantage Highlights

1. 16-loop integration reduces cabinet space occupancy by 70% vs single-loop discrete controllers
2. Fewer discrete hardware components lower long-term equipment failure rate
3. Universal multi-sensor input eliminates separate signal transmitters
4. High galvanic isolation eliminates ground loop interference in multi-loop systems
5. Pre-stored job recipes enable rapid production line changeover without reconfiguring PID parameters
6. Wide industrial temperature operating range adapts to unconditioned factory control cabinets

Applicable Industries

Installation Requirements

• Mounting standard: 35 mm EN 60715 DIN rail vertical mounting inside sealed industrial control cabinet
• Minimum cabinet ventilation clearance: 50 mm top and bottom air gap for heat dissipation
• Wiring specification: Max 2.5 mm² solid copper wire for power terminals; max 1.5 mm² shielded twisted pair for sensor wiring
• Grounding: Separate protective earth wire connected to chassis ground terminal, resistance ≤0.1 Ω

Operation & Maintenance Notes

1. Mandatory forced air cabinet cooling when operating all 16 loops at full power output
2. Shielded sensor cable metal shielding grounded at controller side only, single-point grounding to avoid interference
3. Calibration verification cycle: Every 12 months per ISO 9001 process control standards
4. Do not operate unit above +80°C ambient temperature; overheating triggers permanent thermal protection lockout
5. Isolate all sensor wiring from high-current power cabling with minimum 10 cm separation distance