VP23. 3-way proportional pressure control valve Directly-controlled seat valve with μp-driven pressure control G 1/4 to G 3/4 Nominal diameter 8/16

Transcription

1 VP ll-digital control electronics Variable pressure control, external pressure control upon request Optional: serial interfacing with VP-Tool program Optional actuation via fieldbus (separate data sheet on request) Valve conforms to CE Free of lacquer affecting substances -way proportional pressure control valve Directly-controlled seat valve with μp-driven pressure control G / to G / Nominal diameter / Technical data Medium: Filtered ( μm), unlubricated or lubricated condensatefree compressed air or neutral gases Due to the lubricants and their additives, use of lubricated compressed air can affect the dynamics and service life Fluid temperature: - to + C (no condensation permitted) mbient: Valve series is designed for indoor use at normal industrial ambient mbient temperature: - to + C (consult our technical service for use below + C) Degree of protection: IP (M-variant with connected plug) Operation: Proportional solenoid Pressure range: Operating pressure P max.: bar, bar, bar Operating pressure P: (,) to bar/ (,) to bar/ (,) to bar Flowrate: See flow characteristics Flow direction: >, > Service life: > Million operations, max. stroke Tolerance: Linearity: < ±, (% p max.) Control accuracy: < ±, (% p max.) Response accuracy: < ±, (% p max.) Hysteresis: < ±, (% p max.) Repeat accuracy: < ±, (% p max.) values related to C and V d.c. power supply Materials: Valve housing: luminium Electronic housing: P Seals: NBR, HNBR on request Internal parts : PBT Springs : Steel Electrical parameters See page Ordering information See page W X P = μp /9 Our policy is one of continued research and development. We therefore reserve the right to amend, N/en...

2 VP Function The electronic pressure controller is used in conjunction with an electric set-point (control signal) to quickly and precisely set a pressure at the pressure connection (). Here, the pressure is held constant (see flow rate characteristic) also for use of the medium (compressed air or neutral gases). Proportional valves are used in many different applications across all sectors of industry. They are used anywhere where precise and fast direct or indirect control of pressure, force, rotational speed etc. is required. pplication example: Contact pressure control of welding electrodes in automotive manufacture ssembly The electronic pressure controller consists of: - proportional solenoid - an integrated pressure sensor - mp-driven control electronics - serial interface - a pneumatic control plunger - optional: - Fieldbus interface - programming software VP-Tool (please order separately) - LED display for the size of the output medium Operating principle The valve has a closed feedback loop, meaning that the output pressure is constantly being measured by the pressure sensor and compared to the specified set-point. If the output pressure is lower than the set pressure or if a higher pressure is desired, the pneumatic control plunger is actuated by the electric proportional solenoid. connection is then established between connection (input pressure) and (output pressure) until the pressure is the same as the specified setpoint. If the output pressure is higher than the set pressure or if a lower pressure is desired, the pneumatic control plunger is actuated by the electric proportional solenoid. connection is then established between connection (input pressure) and (ventilation connection) until the pressure is the same as the specified set-point. In addition, after the supply voltage is switched off, the output pressure set last is vented down to bar. Electrical parameters Electromagnetic compatibility (EMV) EU conform to guideline 9//EWG CE- sign Endurance limit in relation to oscillations to DIN EN --: g at -Hz in switchedoff-status Durability under shock effect to DIN EN --: g/ shocks Valves should not be used in safety systems that require blocking or exhaust valves Without power the pneumatic connection -> is open Supply Supply voltage UB (V d.c.) to Residual ripple max. [%] Current consumption at bar NG, max. [] ca., at V d.c. Current consumption at bar NG, static at C (corrected) [] ca., at V d.c. Current consumption at bar NG, max. [] ca., at V d.c. Current consumption at bar NG, static at C (corrected) [] ca., at V d.c. Current consumption at bar NG, max. [] ca., at V d.c. Current consumption at bar NG, static at C (corrected) [] ca., at V d.c. Inputs (signal) Set point W (+/-U d) analogue differential Voltage signal UE (V) to Input resistance RI (kδ) Set point W(I) analogue: Current signal UE (m) to Burden (Δ) Max. input voltage - to Outputs (signal) Output pressure actual value X(U) Voltage signal of pneumatic output pressure U (V) to V = to max. p Output current max. I (m) Output pressure actual value X(I) Current signal of pneumatic output pressure I (m) Load resistance RL (W) Output»pressure reached«x (comp) Switching range (% max. p) +/-% Digital output signal SPS-Level Control pressure outside of Low switching range (X W) Pressure reached (X = W) (V) High Outout current max. (m) () to m = to max. p recommended N/en... Our policy is one of continued research and development. We therefore reserve the right to amend, /9

3 VP Pneumatic parameters Recommended application area by nominal value: NG: Volume (closed) from to cm NG: Volume (closed) from to cm Residual ripple max. [%] Input pressure p max. [bar] / / Output pressure p max. [bar] - / - / - Flow quantity NG [l/min] see diagram Flow quantity NG [l/min] see diagram Switching times (%-9%) nominal size at volume cm Typical values for P= bar Pressure build-up (tr) bar... 9 bar [ms] Pressure build-up (tf) bar... bar [ms] Pressure drop (tr) 9 bar... bar Pressure drop (tf) bar... bar [ms] [ms] Switching times (%-9%), nominal size at volume cm Typical values for P= bar Pressure build-up (tr) bar... 9 bar [ms] Pressure build-up (tf) bar... bar [ms] Pressure drop (tr) 9 bar... bar [ms] Pressure drop (tf) bar... bar [ms] Dynamic value stated relates to V d.c. power supply Test assembly flow CETOP RP P.: flow characteristic of pneumatic devices Step-response diagram tr tf t [ms] /9 Our policy is one of continued research and development. We therefore reserve the right to amend, N/en...

4 VP Pneumatic characteristic curves Flow rate characteristic as a function of the set-point (voltage/current) and input pressure bar, bar, bar for nominal value and Static characteristics p [bar] p = f(w) p [bar] "Z" 9,,,,,,,,,, Z 9 U E[V],,,, p = f(w) 9 W [%],,,,,,,, I E [m] Flow rate characteristics NG /P= bar, bar, bar Flow rate characteristics NG /connection plate / (NG); P= bar, bar, bar Flow rate characteristics NG /connection plate / (NG); P= bar, bar, bar N/en... Our policy is one of continued research and development. We therefore reserve the right to amend, /9

5 VP Functional descriptions, status LED and amplification degree setting General Status LED indicator Status Device off Device running Valve fault* Status-LED off single-colour green red* * Potential error sources: - Current supply or internal references outside the permitted range - Valve not adjustable (X W Time out) - Program cycle interrupted Setting controller gain via PC with VP-Tool The gain of the integrated controller is set in the factory to a value which allows universal use of the valve. If necessary, the controller gain can be varied to suit a specific pneumatic application of the valve. When the screw plug is opened the interface connector can connected and via VP-Tool the controller gain can be adjusted. djustment by VP-Tool via serial interface Function Option LED indicator Pressure range Display values to bar, to, to bar, to, to bar, to, Status coloured LED-display LED indicator green pressure devation from setpoint < +/- % LED indicator red pressure devation from setpoint > +/- % after energizing power supply of the valve the LED display will be initialised. Therefore the LED shows seconds red light and after that seconds green light /9 Our policy is one of continued research and development. We therefore reserve the right to amend, N/en...

6 VP Connection diagrams. Standard connection (Mx; -pin) W (I), white X (komp), brown W (-Ud), green W (+Ud), yellow X (I), grey Ub pink GND blue X (U), red ssignment Supply: Pin Description Colour of connection cable Ub power supply to V d.c. pink GND power ground/pgnd blue Inputs Set point: Pin Description Colour of connection cable -W nalogue GND/set point input voltage to V green +W Signal/set point input voltage to V yellow W(I) Set point input current to m white Depending on the order number, both outputs (U/I) but only the ordered input will be active. Voltage input to V between pins and Current input between pins and Outputs Set point: Pin Description Colour of connection cable X(I) ctual value current to m grey X(U) ctual value voltage to V red Voltage output refers to Gnd Pin. Due to the voltage drop on the ground wire you should consider an accuracy loss of the voltage output. Both outputs are active as standard. Comparator output/pressure switch* Pressure reached: Pin Description Colour of connection cable X (comp) Digital output signal PLC level (I max) =, m brown High : pressure reached devation Iw-xI < ± % Low: pressure not reached devation Iw-xI > ± % The output relates to Gnd Pin * selectable via VP-Tool. Serial interface connection Connection of serial interface Remove fitting, plug in the interface cable, establish communication with VP-Tool. Note: There is no IP-protection with remote fitting! N/en... Our policy is one of continued research and development. We therefore reserve the right to amend, /9

7 VP Option selector VP B Pressure range to bar to bar to bar Nominal size mm D mm E Set point to m to V/Diff. Profibus DP (on request) P Ordering example way proportional pressure control valve Operating pressure to bar, Nominal diameter mm Set point to m, ctual value to V+ to m Quote: VPBDMB Option Serial interface Serial interface + LED-display* B B Connector M/ pin M Fieldbus spec. (on request) N ctual value to V/ to m Profibus DP (on request) P * LED-display for bus version not available, external pressure control upon request ( separate sensor input including software adjustment) ccessories Connectors Description Specification Model Connecting plug Mx; -pin; m, x, mm, straight Connecting plug Mx; -pin; m, x, mm, 9 Connecting plug Mx; -pin; screw terminals, 9 Connector (Bus only) Mx, -pin, m, 9, -Coded, open (power) Connector (Bus only) Mx, -pin, m, straight, -Coded, open (power) Connector (Bus only) Mx, -pin, m, 9, -Coded, open (power) Connector (Bus only) Mx, -pin, m, 9, B-Coded, open (Bus in) Connector (Bus only) Mx, -pin, m, 9, B-Coded, open (Bus out) Connector (Bus only) Mx, -pin, convertible, 9, B-Coded (Bus in) 9 Connector (Bus only) Mx, -pin, convertible, 9, B-Coded (Bus out) 9 Connector with cable (Bus only) Plug Mx, -pin, m, 9, B-Coded, (Bus in/out) 9 Note: Cable material PUR shielded Connection plates Serial interface Description Specification Model daptor complete Cable + CD VP-Tool 999 Description Ports Model Connection plate NG G/ Connection plate NG G/ Connection plate NG G/ Connection plate NG G/ /9 Our policy is one of continued research and development. We therefore reserve the right to amend, N/en...

8 VP Standard ND, M,,,, Ø, M x ø ø,, 9 ~ ~ ~,,,,,,,, ~ Ø, Connection plate ND with serial interface, LED indicator Status N/en... Our policy is one of continued research and development. We therefore reserve the right to amend, /9

9 VP Dimensions ND M,,, ø ø, M x ~ ~ ~, Ø, Ø 9 9, ~,, Connection plate Dimensions optional serial interface, LED indicator ND, Status /9 Our policy is one of continued research and development. We therefore reserve the right to amend, N/en...9

10 VP Connection plate, G/ ports preferable for VPxxBDxxxxxxx valve,,,,,,,, M Ø 9 Ø, G / -,,,,, 9,,, G/ ports optional for VPxxBDxxxxxxx valve,,,,.,,,,, 9, Ø G /, Ø, M -,, N/en... Our policy is one of continued research and development. We therefore reserve the right to amend, /9

11 VP Connection plate, G/ ports preferable for VPxxBExxxxxxx valve B 9,, M,, B,,, 9,,, 9 9,, B,,, 9 -,,,,, G / M 9,, B 9,,,, G/ ports optional for VPxxBExxxxxxx valve M,,, B, G/, M, 9,, Warning These products are intended for use in industrial compressed air systems only. Do not use these products where pressures and temperatures can exceed those listed under Technical Data. Before using these products with fluids other than those specified, for non-industrial applications, life-support systems, or other applications not within published specifications, consult NORGREN. Through misuse, age, or malfunction, components used in fluid power systems can fail in various modes. The system designer is warned to consider the failure modes of all component parts used in fluid power systems and to provide adequate safeguards to prevent personal injury or damage to equipment in the event of such failure. System designers must provide a warning to end users in the system instructional manual if protection against a failure mode cannot be adequately provided. System designers and end users are cautioned to review specific warnings found in instruction sheets packed and shipped with these products. /9 Our policy is one of continued research and development. We therefore reserve the right to amend, N/en...