Description
Spirax Sarco SP500 smart valve positioner is a loop-powered device capable of driving linear and 90° rotary pneumatic valves. The 4-20mA input signal determines the valve set point. Precise control is achieved through valve position feedback, which automatically adjusts the air output pressure to overcome stem friction and fluid forces while maintaining the required valve position. Valve position is shown continuously as a digital travel percentage. Position feedback is obtained through non-contact Hall-effect technology. The pneumatic system is based on piezoelectric valve technology, providing high resolution, high reliability, vibration resistance, and very low steady-state air consumption.
Programmable Functions
SP500 includes many smart functions. Software programming is performed using pushbuttons and an LCD alphanumeric setup menu. Valve commissioning is simple: an automatic commissioning routine displays program status, software travel switch status, the mA input signal, and valve diagnostic data on the LCD. The absence of a mechanical connection between the valve and positioner greatly simplifies installation and reduces installation time. SP500 is supplied with NAMUR-standard mounting hardware for yoke- or pillar-mounted actuators. For 90° rotary valves, a mounting kit compliant with VDI/VDE 3845 is available. SP500 smart positioner supports extended optional features, including the HART® communication protocol, enabling complete system configuration from a personal computer or handheld device.
Technical Data
| Parameter | Details |
|---|---|
| Input signal | 4 - 20mA |
| Minimum input signal | 3.4mA |
| Supply air pressure | 1.4-7.0 bar above spring pressure range 5-10 psi |
| Communication protocol | HART® communication protocol superimposed on the DC current signal |
| Air quality | Dry, oil-free, and contaminant-free; compliant with ISO 8573-1 class 2:3:1 |
| Output pressure | 0-100% of supply pressure |
| Travel range (linear valve/rotary valve) | 10 mm-100 mm/5° - 120° |
| Action | Single-acting/fail exhaust |
| Operating temperature | -10°C - +80°C |
| Maximum air flow | 4.2 standard m³/h @ 1.4 bar g; 8.5 standard m³/h @ 6.0 bar g |
| Steady-state air consumption | Less than 0.016 standard m³/h |
| Air connection | ¼” NPT thread |
| Cable gland | M20 |
| Electrical connection | Spring-clamp terminals for 0.2 -1.5 mm² wire |
| Enclosure rating | IP65 |
| Characteristics | Linear, equal percentage (1:50), and quick opening (50:1) |
| Maximum resolution (maximum) | 0.1% F.S. (full scale) |
| 4 - 20 mA retransmission (optional) | 4 - 20 mA valve position retransmission |
| Software travel switches (optional) | Two software-configured switches, 1 x normally closed and 1 x normally open |
| Shipping weight | 2.2 kg |
Program Functions
| Function | Details |
|---|---|
| Automatic commissioning | Automatic test program |
| Valve configuration | 2-way or 3-way |
| % travel | Selectable 0 - 100% or 100% - 0%, depending on the valve and actuator combination |
| Control action | Direct and reverse action (4-20 or 20-4 mA) |
| Travel limits | Set minimum or maximum travel limits |
| Signal range | 4-20 mA or split range (minimum range 4mA) |
| Deadband | Positioning accuracy (minimum 0.2% to maximum 10% of valve travel) |
| Tight shutoff | Fully vented or vented at a preset input signal |
| Characteristics | Linear, equal percentage, and quick opening; relationship between input signal and valve travel |
| Travel time | Slows valve opening and closing speed |
| Travel switches | Software travel switches (0 - 100%) |
| Reset | Resets all program values |
| Calibration | Establishes center position |
| Input signal | Displays the input mA value |
| Automatic operation/venting | Automatic operation and venting options during program reset |
| Data logging | Diagnostic records of valve travel and total operating hours |
Applications
SP500 can be used with the following actuators: PN1000 and PN2000 series, PNS3000 and PNS4000 series, and PN9000 series.
Additional Options
| Option | Details |
|---|---|
| Pressure gauge block | Complete manifold with 2 pressure gauges for supply pressure and actuator pressure |
| Retransmission and switch board | 4-20mA valve position retransmission and 2 adjustable software switches |
| Power board | 2 wires for the 4-20mA signal input and 2 additional wires for a separate 24V power input, reducing positioner impedance to 50Ω and enabling a 4-wire configuration |
| HART® board | Communication using the HART® protocol |
| Materials (components) | Housing and cover: die-cast aluminum with corrosion-resistant RAL5010 coating; magnet bracket: die-cast aluminum |
Safety Information, Installation, and Maintenance
More information on positioner selection is provided in the installation and maintenance guide supplied with the product (IM-P343-35).
| Positioner series | Details |
|---|---|
| Positioner series | SP500=SP500; SP501=SP500 with HART® communication protocol |
| Action 1 | 0 = linear, rotary, single-acting; single-acting |
| Retransmission + software switches (optional) | 0 = not fitted; R = fitted |
| Housing | 0 = standard |
| Certification | 0 = standard |
| 24V power supply (optional) | 0 = not fitted; P = fitted |
| Remote sensor | 0 = none |
| Extended travel | 0 = none |
| Pressure gauge block | G2 = 2 bar full range; G4 = 4 bar full range; G7 = 7 bar full range |
| Ordering example | SP500 0R0 000 0G4 |
How to Order
Please include all required additional options described on the first page. Example: Spirax Sarco SP500 0R0 000 0G4 electrical smart linear positioner with retransmission and software switch board and a 4barg pressure gauge block. Note: SP500 smart positioner must use high-quality air. Spirax Sarco MPC2 filter regulator or an equivalent product, including a mounting bracket, must be used. For more information about MPC2 product data and ordering, refer to TI-P054-04.