PROPORTIONAL VALVE SERVOTRONIC FOR FLOW CONTROL OR PRESSURE CONTROL ON PNEUMATIC SYSTEM. P 330-GB-R0a

Transcription

1 ROORTIONAL VALVE FOR FLOW CONTROL OR RESSRE CONTROL ON NEMATIC SYSTEM 0-GB-R0a

2 THE ROORTIONAL NEMATIC The flexibility of pneumatics combined with smart electronics for greater utilization versatility of electropneumatic components INTRODCTION The evolution in the automation process is moving towards a need of obtaining greater versatility and increased precision in compressed air driven equipment. This means obtaining proportional operation of the power element as a function of an electric control signal. Combining pneumatic technology and high precision mechanicals is a speedy way of accurately controlling FLOW or RESSRE values of a pneumatic power system according to a signal obtained from the control electronics. G /4 operates in the following scales of values: For flow control : l/min (ANR) with a ± 0V set-point signal. For pressure control : choice of 7 control ranges, 0-0. to 0-6 bar. with a 0-0V, 0-0mA or 4-0mA set-point signal. These modern design products offer high levels of performance. THE ADVANTAGES OF THE RANGE Very short response times Very low hysteresis Excellent flow-rate performance versions proposed: for flow or pressure control Compact monoblock assembly with built-in electronics and sensor Electrical connection by plug-in connector ALICATION AREAS High reliability and long life duration thanks to: - A high precision mechanism combined with simple kinematics - Very light mobile equipment with small displacements - High quality components Various possibilities of input set-points (voltage and current) for the pressure control version The performance and the two-fold capability of the range directly responds to pressure or flow control requirements and, indirectly, to many other physical quantities such as : positions, speeds, accelerations, forces, quantities of material, etc. The industrial applications of these systems address many activity areas : packaging and preservation, handling, processing of wood, paint, agro-food, etc. Application examples : spray guns with controlled air pressure or flow, precise and fast pressure adjustment, pneumatic actuator force control, pneumatic turbine speed control, pneumatic screwdriver speed control, neutral gas flow and proportioning control, EXAMLE - ALICATION DIAGRAM TYES for flow control mechanical entrainment speed regulation, dosing and transport of powders, active load damping (mother roll receiver in the papermaking industry for instance), active load stabilization when affected by spurious movements, pneumatic positioning. for pressure control Direct control with flow-meter Electric regulator Indirect control with upstream/downstream pressure sensors pstream meas. Regulator Downstream meas. ; ; ; ; Direct pressure control F ;; ;; ;; ;; Indirect pressure control F F Set-point Set-point Servotronic C. Regulated flow-rate Flow-meter Servotronic Regulated flow-rate Set-point Servotronic Set-point Servotronic 0-

3 THE ROORTIONAL NEMATIC ON FLOW CONTROL The series 607 flow control version is a port/ position slide servovalve with an electronic control supplying a flow-rate proportional to a given set-point. The product includes : a pneumatic distributor consisting of matching spool-sleeve assembly. a proportional electromagnet directly controlling the movement of the spool. a position sensor supplying a signal proportional to the position of the spool and indicating the flow-rate. ON RESSRE CONTROL The series 607 in the pressure control version is a port/ position pressure control with electronic control supplying a pressure proportional to a given set-point. The product includes : a pneumatic distributor consisting of matching spool-sleeve assembly. a proportional electromagnet directly controlling the movement of the spool. a pressure sensor located near the load port () supplying a signal proportional to the pressure obtained in the load volume. se osition sensor ressure sensor se roportional electromagnet roportional electromagnet ressure Exhaust inlet Return spring ressure inlet Exhaust Return spring The position of the spool can be modified in continuous manner from a ± 0V set-point signal between the end positions. Two versions of the are available depending on the desired state of the current cut-off component ("Failsafe" position) : The position of the spool changes continuously to maintain a constant outlet pressure as function of a 0-0V set-point signal for a given pressure. Two versions of the are available depending on the desired state of the current cut-off component ("Failsafe" position) :. ressure released (open center).. ressure released (open center).. Flow held (closed center).. ressure held (closed center). NOTE - Note that is not a pneumatic isolating system and that its absolute tightness is not a necessary criterion for operation (maximum leakage flow-rate at 6 bar : 50 l/min - ANR). 0-

4 ORT ELECTRONEMATIC ROORTIONAL VALVE for FLOW-RATE control SECIFICATIONS CONTROLLED FLIDS : Air or neutral gas, filtered to 5µm, without condensates, lubricated or not CONNECTION : G/4 MAX ADMITTED RESSRE (MA) : 0 bar FLOW COEFFICIENT (as per ISO658) when fully open: C :.9x0-8 m /s.a (sonic conductance) b : 0.44 (critical pressure ratio) FLOW-RATE (Qv at 6 bar) : 400l/min (ANR), when fully open MAX LEAKAGE (at 6 bar) : 50l/min (ANR) (set-point at 0V) FLID TEMERATRE : +5 C to +40 C AMBIENT TEMERATRE : +5 C to +40 C SET-OINT-ANALOG : + or - 0 Volts (Impedance 00 kω) MECHANICAL RESONSE TIME : 5 ms (at 50% amplitude) BANDWIDTH : 50 Hz (at - db, and at 50% amplitude) CONSTRCTION Direct acting spool valve Housing : treated light alloy Internal parts : treated light alloy INSTALLATION Assembly position: any Comply with required air quality Comply with electrical supply specifications ELECTRICAL CHARACTERISTICS Connection DC Max power Max current Insulation rotection Electrical diameter voltage* (W) (ma) class rating connection G /4 4V = +/-0% 0 50 F I65 7-pin connector DIN465 *Max ripple : 0% Electromagnetic compatibility : electrostatic discharge IEC 80- level fast electrical transience (coupling clip) IEC 80-4 level EQIMENT SELECTION Connection "Failsafe" Load Max flow diameter current function pressure at 6 bar/ bar CODES (bar) (l/min-anr) G /4 ressure released (open center) Flow held (closed center) OTION Floating input () code : 0064 () Common mode voltage accepted : ± 4V to ground ACCESSORIES turn or 0 turn potentiometer ressure sensor } (See page 7) 0-4

5 ORT ELECTRONEMATIC ROORTIONAL VALVE for RESSRE control SECIFICATIONS CONTROLLED FLIDS : Air or neutral gas, filtered to 5µm, without condensates, lubricated or not CONNECTION : G/4 CONTROL RANGE : 0-0. to 0-6 bar (see table below) MAX ADMITTED RESSRE (MA) : (see table below) FLOW COEFFICIENT (as per ISO658) when fully open: C :.9x0-8 m /s.a (sonic conductance) b : 0.44 (critical pressure ratio) FLOW-RATE (Qv at 6 bar) : 400l/min (ANR), when fully open MAX LEAKAGE (at 6 bar) : 50l/min (ANR) (set-point at 0V) FLID TEMERATRE : +5 C to +40 C AMBIENT TEMERATRE : +5 C to +40 C SET-OINT- ANALOG : 0-0 Volts (Impedance 00 kω) - DIGITAL (optional) : 8 bits + memory function 8 bits + pressure reset HYSTERESIS : < 0,5 % of the MR INDEENDENT LINEARITY : < 0, % of the MR CONSTRCTION Direct acting spool valve Housing : treated light alloy Internal parts : treated light alloy INSTALLATION Assembly position: any Comply with required air quality Comply with electrical supply specifications ELECTRICAL CHARACTERISTICS Connection DC Max power Max current Insulation rotection Electrical diameter voltage* (W) (ma) class rating connection G /4 4V = +/-0% 0 50 F I65 7-pin connector DIN465 *Max ripple: 0% Electromagnetic compatibility : electrostatic discharge IEC 80- level fast electrical transience (coupling clip) IEC 80-4 level EQIMENT SELECTION Connection diameter G /4 Failsafe current function ressure released (open center) ressure held (closed center) Max flow at 6 bar/ bar (l/min-anr) MR control range (bar) MA (bar) CODES OTIONS Analog set-point 0-0mA (Input impedance 500Ω) code : Analog set-point 4-0mA (Input impedance 500Ω) code : Floating input of set-point 0-0mA () code : 0089 Floating input of set-point 4-0mA () code : 0080 ressure information output 0-0mA (max load 500Ω) code : ressure information output 4-0mA (max load 500Ω) code : N pressure switch if set-point reached code : NN pressure switch if set-point reached code : N pressure switch if set-point not reached code : 0087 NN pressure switch if set-point not reached code : 0088 Digital set-point (8 bits + memory function) code : Digital set-point (8 bits + pressure reset) code : 0065 Additional spool control loop () code : 0065 () Common mode voltage accepted: ± 4V to ground () Optional loop for pressure release version (open center) The loop is included in the pressure held standard version (closed center) ACCESSORIES : See page 7 0-5

6 series 607 DIMENSIONS AND WEIGHT Weight :.00 kg 68 V x G/4 0 - Lower attachment : ØM5 holes Tapped depth: mm 77 5,5 0 - Electric connection by plug-in connector - External ground terminal 6, ,5 ;;; 48 = = 56 = = 6 = = CONNECTION CONNECTORS Version : analog set-point view along "V" (solder side of female connector) Version : digital set-point view along "V" (solder side of female connector) H I G K R L F M O E N A D B C Flow control - +4V power supply - Ground (power supply) - + set-point input 4 - Ground (set-point) 5 - Not connected 6 - Not connected 7 - Not connected ressure control - +4V power supply - Ground (power supply) - + set-point input 4 - Ground (set-point) 5 - V stabilized voltage output (0 ma max) 6 - ressure signal (pressure sensor output 0-0V for the pressure range in question) 7 - Not connected (standard) On option : pressure switch output connection NN or N (500 ma max) ressure control A - +4V power supply B - Ground (power supply) C - Bit (LSB) G - Bit 5 D - Bit H - Bit 6 E - Bit I - Bit 7 F - Bit 4 K - Bit 8 (MSB) L - Memory function (option 00650) ressure reset function (option 0065) M - Not connected (standard) On option: pressure switch output connection NN or N (500 ma max) N - Not connected O - Not connected - ressure signal (pressure sensor output 0-0V for the pressure range in question) R - Not connected The digital set-point version is not proposed in the flow control mode. 0-6

7 ACCESSORIES FOR CONTROL To meet the complementary requirements of control installations, JOCOMATIC proposes the following accessories: RELATIVE RESSRE SENSORS Associated with the, for FLOW control, these sensors transmit upstream and downstream relative pressure information in order to calculate the real flowrate after taking the atmospheric pressure value into consideration. EQIMENT SELECTION ressure range (bar) Voltage output 0-0V CODES Current output 0-0 ma ELECTRICAL CHARACTERISTICS ower supply voltage : 4V DC= ±0% rotection level : I 65 recision class : 0.5 conductor cable output, length m Brown = +4V White = output Green= ground DIMENSIONS 06 4 G /4" 7 SET-OINT OTENTIOMETER Combined with the unit, for RESSRE control, the potentiometer provides manual control of the set-point. EQIMENT SELECTION Designation turn adjustment Fine 0 turn adjustment CODE Ohmic value: 0 kω (linear) ASCO/JOCOMATIC reserves the right to alter the availability and specifications without notice. DIMENSIONS 5,5 0 9 panel mounting (drilling Ø 0 mm) hoto : model / fine adjustment, 0 turns 0-7

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