Proportional 2-way cartridges high performance rugged digital, with two position transducers, ISO 7368 sizes from 16 to 100

Transcription

1 Table FS/E Proportional 2way cartridges high performance rugged digital, with two position transducers, ISO 7 sizes from to Poppet Sleeve Main stage position transducer Pilot valve Integral electronics USB connector Fieldbus connectors Main connector Pilot valve position transducer ir bleeding ir suction port MODEL CODE LIQZO X L ES SN NP B Y 9 LIQZOLESSNBP22L LIQZOLEB, LIQZPLEB LIQZOLES, LIQZPLES High Performance 2way proportional cartridge valves specifically designed for high speed closed loop controls. They are equipped with two LVDT position transducers for best dynamics in not compensated flow regulations. The cartridge execution for blocks installation grants high flow capabilities and minimized pressure drops. The integral digital electronic driver performs the valve s hydraulic regulation according to the reference signal and assures valvetovalve interchangeability thanks to the factory presetting. High performances valves are available in LEB basic execution with analog reference signals and USB port for software functional parameters setting or in LES full execution which includes also optional fieldbus interfaces for functional parameters setting, reference signals and realtime diagnostics LIQZO: sizes from to, Max flow: to 2 l/min Max pressure: bar LIQZP: sizes from to, Max flow: to. l/min Max pressure: 2 bar / / 2 2 L * ** * Flow control valve LIQZO = size to, Pmax bar LIQZP = size to, Pmax 2 bar Seals material, see sect., : = NBR PE = FKM BT = HNBR L = closedloop two LVDT transducers Integral digital drivers: EB = basic () ES = full lternated P/Q controls see section SN = none Series number Electronic options, see sections 9 I = current reference input and monitor 2 m (omit for standard voltage reference input and monitor ± V) F = fault signal Q = enable signal Z = double power supply, enable, fault and monitor signals (2 pin connector) (2) Spool type regulating characteristics: L = linear Fieldbus interfaces USB port always present: NP = Not present () BP = PROFIBUS DP BC = CNopen EH = EtherCT Valve size, see section LIQZO = 2 2 l/min 2 2 LIQZP = l/min 2 72 Nominal flow (l/min) at Δp bar Configuration: 2 = 2 way LIQZOLEB LIQZOLES (functional symbol) LIQZOLEB LIQZOLES (simplified symbol) () LEB basic execution available only in version SNNP (2) Double power supply only for LES FS

2 2 GENERL NOTES LIQZOLEB, LES and LIQZPLEB, LES proportional cartridges are CE marked according to the applicable Directives (e.g. Immunity/Emission EMC Directive and Low Voltage Directive). Installation, wirings and startup procedures must be performed according to the general prescriptions shown in table F and in the installation notes supplied with relevant components. The electrical signals of the valve (e.g. monitor signals) must not be directly used to activate safety functions, like to switchon/off the machine s safety components, as prescribed by the European standards (Safety requirements of fluid technology systems and componentshydraulics, EN92). WRNING To avoid overheating and possible damage of the electronic driver, the valves must be never energized without hydraulic supply to the pilot stage. In case of prolonged pauses of the valve operation during the machine cycle, it is always advisable to disable the driver (option /Q or /Z) safety fuse 2, installed on 2VDC power supply of each valve is always recommended, see also Power supply note at sections 9 WRNING The loss of the pilot pressure causes the undefined position of the main spool. The sudden interruption of the power supply during the valve operation causes the immediate shutoff of the main spool. This could cause pressure surges in the hydraulic system or high decelerations which may lead to machine damages. FIELDBUS only for LES Fieldbus allows the direct communication of the proportional valve with machine control unit for digital reference signal, diagnostics and settings of functional parameters. nalog reference signal remain available on the main connector for quick commissioning and maintenance. For detailed information about fieldbus features and specification see tech table GS. MIN CHRCTERISTICS based on mineral oil ISO VG at C ssembly position ny position Subplate surface finishing Roughness index, Ra, flatness ratio,/ (ISO ) MTTFd valves according to EN ISO 9 7 years, see technical table P7 mbient temperature range standard execution = 2 C + C /BT option = C + C Storage temperature range Standard execution = 2 C +7 C /BT option = C +7 C Coil resistance R at 2 C, Ω Max. solenoid current 2, Max. power Watt Insulation class H ( ) Due to the occuring surface temperatures of the solenoid coils, the European standards ISO 72 and EN92 must be taken into account Protection degree to DIN EN29 IP/7 Tropicalization Tropical coating on electronics PCB Duty factor Continuous rating (ED=%) EMC, climate and mechanical load See technical table G Communication interface Communication physical layer USB tos SCII coding not insulated USB 2. + USB OTG CNopen EN2 + DS optical insulated CN ISO9 PROFIBUS DP EN72/IEC optical insulated RS EtherCT IEC Fast Ethernet, insulated Base TX Size Max regulated flow Δp PT Max permissible flow at Δp = bar at Δp = bar [l/min] Max pressure [bar] LIQZO LIQZP Nominal flow of pilot valve at Δp = 7 bar [l/min] Leakage of pilot valve at P = bar [l/min] Piloting pressure [bar] Piloting volume [cm ] Piloting flow () [l/min] Response time % step signal (2) [ms] 2,2, 7, ,2 Ports, B = X = Y Ports, B = 2 X = Y min: % of system pressure max recommended 2,2 9, 2, 7, ,7 9, 2 2 2,7 7, , 2 2 9, , 72 Hysteresis Repeatability Thermal drift [% of the max regulation] [% of the max regulation], ±, zero point displacement < % at ΔT = C Note: above performance data refer to valves coupled with tos electronic drivers, see section. () with step reference input % (2) see datailed diagrams in section 7.2

3 SELS ND HYDRULIC FLUID for other fluids not included in below table, consult our technical office NBR seals (standard) = 2 C + C, with HFC hydraulic fluids = 2 C + C Seals, recommended temperature fluid FKM seals (/PE option) = 2 C + C HNBR seals (/BT option) = C + C, with HFC hydraulic fluids = C + C Recommended viscosity 2 mm 2 /s max allowed range mm 2 /s Fluid contamination class ISO class 2// NS class 9, in line filters of μm (β _>7 recommended) Hydraulic fluid Suitable seals type Classification Ref. Standard Mineral oils Flame resistant without water Flame resistant with water NBR, FKM, HNBR FKM NBR, HNBR HL, HLP, HLPD, HVLP, HVLPD HFDU, HFDR HFC DIN 2 ISO 2922 ELECTRONIC DRIVERS Valve model LEB LES Drivers model ERILEBN ERILESN Type Digital Format Integral to valve Data sheet GS2 GS2 Note: for main and communication connector see sections, 2 7 DIGRMS (based on mineral oil ISO VG at C) 7. Regulation diagrams (values measured at Δp bar) Regulated flow [l/min] 2 Regulated flow [l/min] = LIQZOL** 2 = LIQZOL*2* Reference signal [V] = LIQZOL*2* = LIQZOL** Reference signal [V] Regulated flow [l/min] 2 Regulated flow [l/min] Reference signal [V] Reference signal [V] = LIQZPL** 2 = LIQZPL** = LIQZPL** = LIQZPL** FS

4 7.2 Response time The response times in below diagrams are measured at different steps of the reference input signal. They have to be considered as average values. For the valves with digital electronics the dynamics performances can be optimized by setting the internal software parameters. Spool stroke [%] LIQZO 2 Step signal [%] Step signal [%] LIQZO2 7 2 Spool stroke [%] 7 2 Time [ms] Time [ms] LIQZO Step signal [%] Step signal [%] LIQZO Spool stroke [%] 7 2 Spool stroke [%] 7 2 Time [ms] Time [ms] 7. Bode diagrams stated at nominal hydraulic conditions mplitude ratio [db] 2 2 Phase [degrees] mplitude ratio [db] 7 7 Phase [degrees] Frequency [Hz] Frequency [Hz] = LIQZOL**: % 9% 2 = LIQZOL**: % ± % = LIQZOL*2*: % 9% = LIQZOL*2*: % ± % = LIQZOL*2*: % 9% = LIQZOL*2*: % ± % 7 = LIQZOL**: % 9% = LIQZOL**: % ± % mplitude ratio [db] Phase [degrees] mplitude ratio [db] Phase [degrees] Frequency [Hz] = LIQZPL**: % 9% = LIQZPL**: % 9% 2 = LIQZPL**: % ± % = LIQZPL**: % ± % Frequency [Hz] = LIQZPL**: % 9% 7 = LIQZPL**: % 9% = LIQZPL**: % ± % = LIQZPL**: % ± %

5 IR BLEEDING Size to ir suction port plug G/ CH ir bleeding 2 plugs G/ CH Size ir suction port plug G/ CH ir bleeding 2 plugs G/ CH Sizes to ir suction port plug G/2 CH ir bleeding 2 plugs G/ CH To be used only in case port is connected to tank and subjected to negative pressure, consult our technical office. t the machine commissioning it is advisable to bleed the air from piloting chambers, by loosening the 2 plugs shown in the picture. Operate the valve for few seconds at low pressure and then lock the plugs. ir suction 9 ELECTRONIC OPTIONS Standard driver execution provides on the 7 pin main connector: Power supply 2 VDC must be appropriately stabilized or rectified and filtered; a 2, safety fuse is required in series to each driver power supply pply at least a μf/ V capacitance to single phase rectifiers or a 7 μf/ V capacitance to three phase rectifiers Reference input signal analog differential input with ± VDC nominal range (pin D, E), proportional to desired valve spool position Monitor output signal analog output signal proportional to the actual valve s spool position with ±VDC nominal range minimum time of to ms have be considered between the driver energizing with the 2 VDC power supply and when the valve is ready to operate. During this time the current to the valve coils is switched to zero. 9. Option /F It provides a Fault output signal in place of the Monitor output signal, to indicate fault conditions of the driver (cable interruption of spool transducers or reference signal for /I option): Fault presence corresponds to VDC, normal working corresponds to 2 VDC 9.2 Option /I It provides 2 m current reference and monitor signals, instead of the standard ± V. Input signal can be reconfigured via software selecting between voltage and current, within a maximum range of ± V or ±2 m. It is normally used in case of long distance between the machine control unit and the valve or where the reference signal can be affected by electrical noise; the valve functioning is disabled in case of reference signal cable breakage. 9. Option /Q It provides the possibility to enable or disable the valve functioning without cutting the power supply (the valve functioning is disabled but the driver current output stage is still active). To enable the driver supply a 2 VDC on the enable input signal. 9. Option /Z It provides, on the 2 pin main connector, the following additional features: Enable Input Signal To enable the driver, supply 2 VDC on pin referred to pin 2: when the Enable signal is set to zero the valve functioning is disabled (zero current to the solenoid) but the driver current output stage is still active. Fault Output Signal Fault output signal indicates fault conditions of the driver (solenoid short circuits/not connected, reference signal cable broken for 2m input, etc.). Fault presence corresponds to VDC, normal working corresponds to 2 VDC (pin referred to pin 2): Fault status is not affected by the Enable input signal Power supply for driver s logics and communication only for LES Separated power supply for the solenoid (pin, 2) and for the digital electronic circuits (pin 9, ). Cutting solenoid power supply allows to interrupt the valve functioning but keeping energized the digital electronics thus avoiding fault conditions of the machine fieldbus controller. This condition aids to realize safety systems in compliance with European Norms EN9 (ex EN9). 9. Possible combined options /FI, /IQ and /IZ FS

6 ELECTRONIC CONNECTIONS ND LEDS. Main connector signals 7 pin standard, /F and /Q options PIN Standard /Q /F TECHNICL SPECIFICTIONS NOTES B C D E F G V+ V GND Q_INPUT+ ENBLE INPUT Q_MONITOR referred to: GND V ERTH GND FULT Power supply 2 VDC Power supply VDC nalog ground Enable (2 VDC) or disable ( VDC) the valve, referred to V Flow reference input signal: ± VDC / ±2 m maximum range Defaults are ± VDC for standard and 2 m for /I option Negative reference input signal for Q_INPUT+ Flow monitor output signal: ± VDC / ±2 m maximum range Defaults are ± VDC for standard and 2 m for /I option Fault ( VDC) or normal working (2 VDC) Internally connected to the driver housing Input power supply Gnd power supply Gnd analog signal Input on/off signal Input analog signal Software selectable Input analog signal Output analog signal Software selectable Output on/off signal.2 Main connector signal 2 pin /Z option PIN TECHNICL SPECIFICTIONS NOTES LEBSN /Z LESSN /Z PE V+ V ENBLE referred to: V VL Q_INPUT+ INPUT Q_MONITOR referred to: GND VL GND NC R_ENBLE NC NC VL+ NC VL FULT referred to: V VL ERTH Power supply 2 VDC Power supply VDC Enable (2 VDC) or disable ( VDC) the valve Flow reference input signal: ± VDC / ±2 m maximum range Defaults are ± VDC for standard and 2 m for /I option Negative reference input signal for Q_INPUT+ Flow monitor output signal: ± VDC / ±2 m maximum range Defaults are ± VDC for standard and 2 m for /I option nalog ground Do not connect Repeat enable, output repeter signal of enable input, referred to V Do not connect Do not connect Power supply 2 VDC for driver s logic and communication Do not connect Power supply VDC for driver s logic and communication Fault ( VDC) or normal working (2 VDC) Internally connected to the driver housing Input power supply Gnd power supply Input on/off signal Input analog signal Software selectable Input analog signal Input analog signal Software selectable Output analog signal Gnd analog signal Output on/off signal Input power supply Gnd power supply Output on/off signal Note: do not disconnect VL before VL+ when the driver is connected to PC USB port. Communications connectors USB connector M2 pin always present PIN SIGNL TECHNICL SPECIFICTION () +V_USB Supply for external USB Flash Drive 2 ID USB Flash Drive identification GND_USB Signal zero data line D Data line D+ Data line + BC fieldbus execution, connector M2 pin PIN SIGNL TECHNICL SPECIFICTION () CN_SHLD Shield 2 NC do not connect CN_GND Signal zero data line CN_H Bus line (high) CN_L Bus line (low) BP fieldbus execution, connector M2 pin PIN SIGNL TECHNICL SPECIFICTION () +V Termination supply signal 2 LINE Bus line (high) DGND Data line and termination signal zero LINEB Bus line (low) SHIELD Note () shield connection on connector s housing is recommended EH fieldbus execution,connector M2 pin PIN SIGNL TECHNICL SPECIFICTION () TX+ Transmitter 2 RX+ Receiver TX Transmitter RX Receiver Housing SHIELD

7 . Connections layout LEB MIN CONNECTOR USB COMMUNICTION (always present) LES L L2 L L USB COMMUNICTION (always present) INPUT FIELDBUS CONNECTOR OUTPUT FIELDBUS CONNECTOR MIN CONNECTOR DIGNOSTIC LED 2 CNopen (male) PROFIBUS DP (male) EtherCT (female) USB (female) 7 PIN MIN CONNECTOR (male) PE 2 PIN MIN CONNECTOR (male) L LED FUNCTION DESCRIPTION CNopen (female) Note: connectors front view PROFIBUS DP (female) EtherCT (female) NP, BC, BP EH EtherCT L VLVE STTUS LINK/CT L2 NETWORK STTUS NETWORK STTUS L SOLENOID STTUS LINK/CT CONNECTORS ZM7P 7 pin (Metallic) ZH7P 7 pin (Plastic) 2 ZM2P 2 pin (Metallic) ZH2P 2 pin (Plastic) MIN CONNECTORS LEB ECSBUSB/M2 USB CBLE cable lenght m B ZMPF Input ZMPM Output ZMPF/BP Input ZMPM/BP Output ZMPM/EH Input / Output FIELDBUS CONNECTORS LES Note: the use of metallic connectors is strongly recommended to meet EMC performance 2 MODEL CODES OF MIN CONNECTORS ND COMMUNICTION CONNECTORS to be ordered separately VLVE VERSION LEB LES LEB /Z LES /Z CNopen (BC) PROFIBUS DP (BP) EtherCat (EH) CONNECTOR CODE ZM7P (IN) ZH7P (IN) ZM2P (IN) ZH2P (IN) ZMPF ZMPF/BP ZMPM/EH ZMPM ZMPM/BP ZMPM/EH PROTECTION DEGREE DT SHEET IP7 GS2, GS2, K only for LES FS

8 PROGRMMING TOOLS see table GS Valve's functional parameters and configurations, can be easily set and optimized using tos ESW programming software connected via USB communication port to the digital driver. ESW software is available in different versions /S according to the driver s fieldbus interface: NP (not present) ESWPS, BC (CNopen) ESWBC, BP (PROFIBUS DP) ESWBP and EH (EtherCT) ESWEH. For fieldbus versions, ESW software permits valve's parameterization through USB communication port also if the driver is connected to the central machine unit via fieldbus. /S WRNING: drivers USB port is not isolated! Use of ESBUSB/OPT isolator adapter is highly recommended for PC protection. USB connection TEB TES ECSBUSB/M2 cable ESBUSB/OPT isolator FSTENING BOLTS and VLVE MSS LIQZO LIQZP Size 2 2 Fastening bolts class 2.9 N Mx9 N M2x N Mx N M2x7 Tightening torque Nm 2 Nm Nm Nm Mass (Kg),,2,2,,9,2,7 7, Size Fastening bolts class 2.9 N M2x N Mx2 N M2x N Mx2 Tightening torque Nm 2 Nm Nm 2 Nm Mass (Kg) 2,9 2,, 7, 72,2 22, 2, MOUNTING SURFCE ND CVITY see table P for detailed dimensions Mounting surface Sizes Sizes B C D E F G J min K L min M ØN ØP max R S max T V 2 2, 2 2 M 22 2 Size, M2 M 2 7 7, 9, 2, 92, 2, 2 M2 7, 92, 2 M2 2, 2, 2, 2 7, 2 2, M 2 2, 7, 2 2 M2 2 M 2 Cavity Size ød 2 ød2 2 ød max ød max 22, L L2 L L L L L7 U W +, +, 2, 2 2 2,, , 72 +, 7 7 2, 2,,, 2 2, 7 +, +,, 2, 2,,, 7, 7 +, +, 2,,, 9 2, +, 22 +, 7 97,,, , +, 27,,2 7 +,2 2 +,2 2 7,,, ,2 2 +,2 29 2,..2

9 INSTLLTION DIMENSIONS [mm] LIQZOLEB2 LIQZOLES2 LIQZOLEB22 LIQZOLES x x LIQZOLEB22 LIQZOLES22 LIQZOLEB2 LIQZOLES x 2x2 Space to remove the 7 or 2 pin main connector. For main and communication connectors see section, 2 Note: for mounting surface and cavity dimensions, see section and table P FS

10 LIQZPLEB2 LIQZPLES2 LIQZPLEB2 LIQZPLES x x LIQZPLEB2 LIQZPLES2 LIQZPLEB2 LIQZPLES Ø2 Ø297 Space to remove the 7 or 2 pin main connector. For main and communication connectors see section, 2 Note: for mounting surface and cavity dimensions, see section and table P 2/