Description
Spirax Sarco SX80 process controller is a 1/16DIN panel-mounted controller for single- and multiple-setpoint control applications. It is designed for use with Spirax Sarco pneumatic and electric control valves, electronic equipment, and electrical equipment. Each SX80 controller provides VMD (3-point) and analog signal (4 - 20mA) outputs. Its fast-start code enables easy commissioning in the field.
Features
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Universal inputs - RTD, thermocouple, mA, and mV.
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Universal outputs - VMD (valve motor drive), continuous mA and voltage, relays, and logic signals for on/off control.
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Auxiliary power supply - For external transmitters requiring 18VDC.
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Text messages - Can be configured with scrolling text messages to alert users to process conditions.
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Quick code - A 5-digit quick code simplifies controller configuration and commissioning. The controller can be installed and commissioned easily.
Approvals
The controller complies with 93/68/EEC and the essential protection requirements for electrical equipment specified in EN61010 - 1:90.
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EMC emissions standard: EN 61326 - 1: 1997 Class B (including amendments A1, A2, and A3).
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EMC immunity standard: EN61326 - 1: 1997 industrial locations (including amendments A1, A2, and A3).
Technical Specifications
General Technical Specifications
| Mounting | Panel mounting 1/16DIN |
|---|---|
| Power supply | 85 - 265Vac, maximum power 6W |
| Electrical connection | Screw terminals |
| Enclosure rating | IP65 - inserted from the front panel, NEMA 4X |
| Operating temperature and humidity | Temperature 0 - 55°C, humidity 5% - 85% |
| Environment | Not suitable for explosive or corrosive environments |
| Electromagnetic compatibility (EMC) | EN 61326 |
| Electrical safety | BS EN 61010 installation category II |
| Weight | 250g |
| Approvals | CE |
Process Variable Input
| Calibration accuracy | <±0.25%(±1 least significant digit LSD) |
|---|---|
| Resolution | <0.5μV(1.6s filter) |
| Input filter | Off to 59.9s |
| RTD | Three-wire PT100, DIN43760 |
| Indicator current | 0.2mA |
| Universal linear mA | 4 - 20mA, 0 - 20mA, using an external 2.49Ω shunt resistor |
| Linear input range | -10 - 80mV |
| Thermocouple | K,J,N,R,S,B,L,T,C, custom |
| Sample rate | 4Hz(250ms) |
| Cold junction accuracy | <±1°C, at an ambient temperature of 25°C |
| Linear mA accuracy | <0.1% of reading |
| Input impedance | 100MΩ |
| Number of setpoints | 3 |
| User calibration | Two-point gain and offset |
Transmitter Power Supply
| Insulation | 300Vac double insulation |
|---|---|
| Output voltage | 18V±15% |
| Current | 30mA maximum |
| Load regulation | <1V, 25mA |
Control Action
| Proportional band | 1 - 9999 engineering units, 0.01 - 300, 0.1 - 3000 |
|---|---|
| Integral time | Off - 9999 |
| Derivative time | Off - 9999 |
| Error band | One-shot tuning or natural frequency tuning. The controller automatically selects the best method according to process conditions. |
| Auto-tuning | Hysteresis 0.01 - 300.0 or 0.1 - 3000 engineering units |
| On/off control | 1 - 9999 engineering units, 0.01 - 300, 0.1 - 3000. |
| Cutback | Minimizes overshoot in critical processes. |
| Automatic/manual mode | Selected from the keypad |
Relay
| Insulation | 300Vac double insulation |
|---|---|
| Output range | 0 - 20mA, 4 - 20mA |
| Resolution | 13.5bits |
| Contact rating | 2A maximum at 264Vac resistive |
| Note: When relays use common terminals, the maximum current is 2A per terminal. (For AB terminals, the maximum is 2A.) |
Isolated DC Output
| Insulation | 300Vac double insulation |
|---|---|
| Output range | 0 - 20mA, 4 - 20mA |
| Resolution | 13.5bits |
Ordering Information
One SX80 process controller.
Important Notes
The installation and commissioning instructions supplied with the product specify that safe controller operation can be ensured only when installation, commissioning, operation, and maintenance are performed properly by suitably qualified personnel. The company’s safety personnel are responsible for ensuring that the product specifications and safety information in the installation and commissioning instructions are understood and followed.