Functional Symbols and Application Notes

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2 Functional Symbols and pplication Notes Model Types KHDG5V Shown Simplified symbol Model Types KHDG5V Shown K()FDG5V symbols identical, but omit pilot-stage LVDTs Simplified symbol T T Detailed symbol Detailed symbol 7-pin plug s s T T T T n n X T Y X T Y Spool Types Type 2 Type 33 Type 5 n See pplication Note, and in Model Code on next page. pplication Notes. Main-Spool Options Spools shown are meter-in/meter-out types. Center-condition options are types 2 and 33.. Internally iloted Models Differ from detailed symbols above by omission of plug n and the blocking of port X by the mating surface. 2

3 Model Code K () * DG5V - * - ** - C - ******* - (E) X - VM - ** - *** - H1 - ** Series type designator = Integral amplifier Omit for non-integral amplifier 2 F H Feedback arrangement = From main stage only = From pilot and main stages 3 Mounting size code (ISO 441) 5 = 5 7 = 7 8 = 8 4 Spool type, flow rating and metering See Functional Symbols on previous page p = 5 bar (72 psi) per metering flow path, e.g. to T Symmetric spools For K*DG5V-5 valves: 2C1N = 1 L/min (26 US gpm) 33C8N = 8 L/min (21 US gpm) 5C85N = 85 L/min (22 US gpm) For K*DG5V-7 valves: 2C2N = 2 L/min (52 US gpm) 33C1N = 1 L/min (42 US gpm) 5C2N = 2 L/min (52 US gpm) For K*DG5V-8 valves: 2C3N = 3 L/min (79 US gpm) 33C27N = 27 L/min (71 US gpm) 5C3N = 3 L/min (79 US gpm) symmetric spools First figure (***N) is flow rating -, or -T ( port flow); last figure (N***) is flow rating -, or -T ( port flow) For K*DG5V-5 valves: 2C7N45 = 7 L/min (18.5 US gpm), port flow 45 L/min (11.9 US gpm), port flow 33C65N4 = 65 L/min (17.2 US gpm), port flow 4 L/min (1.6 US gpm), port flow For K*DG5V-7 valves: 2C15N85 = 15 L/min (4 US gpm), port flow 85 L/min (22.4 US gpm), port flow 33C13N65 = 13 L/min (33.3 US gpm), port flow 65 L/min (17.2 US gpm), port flow For K*DG5V-8 valves: 2C28N2 = 28 L/min (74 US gpm), port flow 2 L/min (52 US gpm), port flow 33C25N17= 25 L/min (66 US gpm), port flow 17 L/min (45 US gpm), port flow 5 ilot supply EX = External through integral reducer X = Internal through integral reducer 6 Solenoid electrical connector U1 = ISO 44/DIN 4365, non-integral amplifier type only F = Flying lead, integral amplifier type only 7 Electrical connection (KF valves only) D7 = 7-pin connector with plastic plug. See Warning note below. 8 Design number 1 series for K()FDG5V-7/8 models 2 series for K()H models 3 series for K()FDG5V-5 models Subject to change. Installation dimensions unaltered for design numbers * to *9 inclusive. Solenoid and LVDT lugs Supplied with valve. Warning To conform to the EC Electromagnetic Compatibility directive (EMC) this K valve must be fitted with a metal 7-pin plug. The screen of the cable must be securely connected to the shell of the metal connector. suitable I67 rated connector is available from Vickers, part no lternatively a non I67 rated connector is available from ITT-Cannon, part no.c 2 COM-E 14S 7. dditionally the cable must be fitted with a ferrite EMC suppression core not more than 4cm from the connector referred to above. Suitable types include Farnell or Farnell which snap fit over the cable. The plastic plug, part number , is only suitable for use in a sealed electromagnetic environment or outside of the European Community. 3

4 Operating Data erformance data is typical with fluid at 36 cst (168 SUS) and 5 C (122 F) while using the basic Vickers power amplifier. KF/HDG5V and KF/HDG5V Valves Relative duty factor Continuous rating (ED = 1%) Hysteresis, with flow through ---T, p = 5 bar (72 psi) per metering path (- or -T): KFDG5V KHDG5V Step input response, with flow through ---T, p = 5 bar (72 psi) per metering path, e.g. - Required flow step: K()FDG5V-5 to 1% 1% to +9 to 9% K()FDG5V-7 to 1% 1% to +9 to 9% K()FDG5V-8 to 1% 1% to +9 to 9% K()HDG5V-5 to 1% 1% to +9 to 9% K()HDG5V-7 to 1% 1% to +9 to 9% K()HDG5V-8 to 1% 1% to +9 to 9% Mass KFDG5V-5 KFDG5V-5 KFDG5V-7 KFDG5V-7 KFDG5V-8 KFDG5V-8 KHDG5V-5 KHDG5V-5 KHDG5V-7 KHDG5V-7 KHDG5V-8 KHDG5V-8 Installation and start-up <2% <1% Time to reach 9% of required step: 3 ms (.3s) 24 ms (.24s) 34 ms (.34s) 5 ms (.5s) 54 ms (.54s) 61 ms (.61s) 67 ms (.67s) 56 ms (.56s) 75 ms (.75s) 24 ms (.24s) 23 ms (.23s) 35 ms (.35s) 24 ms (.24s) 23 ms (.23s) 36 ms (.36s) 37 ms (.37s) 36 ms (.36s) 57 ms (.57s) 9,5 kg (2.9 lb) approx. 9,9 kg (21.8 lb)approx. 1,75 kg (23.7 lb) approx. 11,15 kg (24.6 lb) approx. 18, kg (39.7 lb) approx. 18,4 kg (4.6 lb) approx. 9,75 kg (21.5 lb) approx. 1,15 kg (22.4 lb) approx. 11, kg (24.2 lb) approx. 11,4 kg (25.1 lb) approx. 18,25 kg (4.2 lb) approx. 18,65 kg (41.1 lb) approx. See Further Information 4

5 KF/HDG5V Valves Max. current, at 5 C (122 F) ambient 2,7 Standing current, pilot valve at null: KFDG5V KHDG5V Coil resistance, at 2 C (68 F): KFDG5V KHDG5V Electrical plugs, supplied with valve KF/HDG5V Valves ower supply Command signal Input impedance 7-pin plug connector in connections: C D E F G Electro-magnetic compatibility (EMC): Emission Immunity See Important note regarding EMC, five pages on 1,4 1,6 2,8Ω 1,7Ω See Installation Dimensions 24V DC (21V to 36V including 1% peak-to-peak max. ripple) max. current 3 to +1V DC, or to 1V DC, or 1V to +1V DC 47 kω ower supply +ve ower V Signal V +ve voltage command signal ve voltage command signal Monitor output rotective ground EN EN Gain adjustment 25 to 125% Zero adjustment Factory-set adjustments Monitor point signal: Output impedance ower stage WM frequency Repeatability, valve-to-valve (at factory settings): Flow gain at 1% command signal rotection: Electrical Relative humidity Supporting products: uxiliary electronic modules (DIN-rail mounting): EH-CON-21--1* signal converter EH-DSG-21--1* command signal generator EH-RM-21--1* ramp generator EH-ID-21--1* ID controller Subplates, size 5, 7 and 8 Mounting bolts Note: If not using Vickers recommended bolt kits, bolts must be to ISO 898 grade 12.9 or stronger 18% Deadband, gain, dither and offset 1V for full stroke output stage spool 1 kω 2 khz nominal Optimised by adjustment of deadband compensation, gain and ramp potentiometers on associated Vickers amplifier Reverse polarity protected 85 to 95% at 2 to 7 C (68 to 158 F) See catalog 241 See catalog 241 See catalog 241 See catalog 241 See catalogs 2336, 2337 and 2338 See catalog

6 Maximum ressures, bar (psi) Model ilot ressure Source orts, and T X Y K()FDG5V-7/8 Internal or external 35 (5) s 35 (5) 35 (5) s 4 (58) K()*DG5V-5 External 315 (45) 21 (3) 21 (3) n 4 (58) Internal 315 (45) n 1 (145) 315 (45) n 4 (58) K()HDG5V-7/8 Internal or external 35 (5) n 35 (5) 35 (5) n 4 (58) s 25 (363) min. pressure at X for externally piloted models or at and X for internally piloted models. n 45 (653) min. pressure at X for externally piloted models or at and X for internally piloted models. Minimum Recommended Flow Rates For spool types 2C and 33C p = 1 bar (145 psi) for looped flow ---T (or ---T) Valve Size/Spool Code K()FDG5V-5-2C1N K()FDG5V-5-33C8N K()FDG5V-7-2C2N K()FDG5V-7-33C1N K()FDG5V-8-2C3N K()FDG5V-8-33C27N K()HDG5V-5-2C1N K()HDG5V-5-33C8N K()HDG5V-7-2C2N K()HDG5V-7-33C1N K()HDG5V-8-2C3N K()HDG5V-8-33C27N Min. Flow Rate L/min 1, 1, 2, 2, 3, 3,,5,5 1, 1, 1,5 1,5 in 3 /min

7 ower Capacity Envelopes Flow through ---T or ---T KF models psi bar 5 35 Valve pressure drop K()FDG5V-5 K()FDG5V-7 K()FDG5V L/min US gpm Flow rate KH models psi bar 5 35 Valve pressure drop K()HDG5V-5 K()HDG5V-7 K()HDG5V L/min US gpm Flow rate 7

8 Flow Gain KFDG5V and KHDG5V Models t p = 5 bar (72 psi) per metering path (e.g. -) n, with flow through ---T or ---T. ercentage command signals applicable for positive and negative values of command signal. See footnote (s) relative to point at which flow starts. US gpm L/min US gpm L/min Flow rate 4 15 Flow rate s Command signal (% of max.) Command signal (% of max.) US gpm 8 7 L/min Flow rate s Command signal (% of max.) s These points will vary from valve to valve, but can be adjusted using the deadband compensation feature of the drive amplifier. n t other p values, flow rates approximate to: where Q D = Datum flow rate p D = ressure drop at datum flow rate p X Q p X = Required p X Q D pd 8

9 Frequency Response, Typical For an amplitude of 25% of max. stroke (center-to-offset) about the 5% position + 3 mplitude ratio (d) mplitudes 135 hase lags Frequency (Hz) 9 hase lag (degrees) + 3 mplitude ratio (d) mplitudes 135 hase lags Frequency (Hz) 9 hase lag (degrees) ressure Gain K()F/HDG5V*-5C***N p between ports & 1 or &, as % of port pressure % % Spool stroke from null, % of max. 9

10 Electrical lock Diagram Command Signals and Outputs 7-pin plug Flow in D in E direction ositive V to V Negative U D - U E = ositive Negative V to V ositive U D - U E = Negative KF/HDG5V-* Wiring Connections must be made via the 7-pin plug mounted on the amplifier. Recommended cable sizes are: ower cables: For 24V supply,75 mm 2 (18 WG) up to 2m (65 ft) 1, mm 2 (17 WG) up to 4m (13 ft) Signal cables:,5 mm 2 (2 WG) Screen: suitable cable would have 7 cores, a separate screen for signal wires and an overall screen. See wiring connection diagrams on page NO TG 7-pin plug connections +24V ower V Signal V C Monitor output F Command ositive D signal voltage, Negative E see table trotective ground G + 15V V 15V Gain LVDT Compensation network Deadband Dither Solenoid drive 2 Modulator Valve envelope Solenoid drive 1 Warning ll power must be switched off before connecting or disconnecting any plugs. 1

11 Wiring Connection Wiring Connections for Valves with integral mplifier User panel Outer Screen K valve ower Supply +24V V Demand Signal Spool position Monitor V +/ 1V V Input Inner screen Drain wire C D or E E or D G F Valve must be connected to ground via subplate Enclosure V must be connected to ground Connector shell Spool position monitor voltage (pin F) will be referenced to the K valve local ground. local ground (pin C) is provided for optional use by differential input customer supplied electronics. Warning Do not ground pin C. If the local ground (pin C) is not used for differential monitor electronics, do not use. Read monitor pin F with respect to ground. Note: In applications where the valve must conform to European RFI/EMC regulations, the outer screen (shield) must be connected to the outer shell of the 7-pin connector and the valve body must be fastened to the earth ground. roper earth grounding practices must be observed in this case, as any differences in command source and valve ground potentials will result in a screen (shield) ground loop. Warning Electromagnetic Compatibility (EMC) It is necessary to ensure that the valve is wired-up as above. For effective protection, the user electrical cabinet, the valve subplate or manifold, and the cable screens should be connected to efficient ground points. The metal 7-point connector, part no , should be used for the integral amplifier. In all cases, both valve and cable should be kept as far as possible from any sources of electromagnetic radiation such as cables carrying heavy current, relays and certain kinds of portable radio transmitters, etc. Difficult environments could mean that extra screening may be necessary to avoid the interference. It is important to connect the V lines as shown above. The multi-core cable should have at least two screens to separate the demand signal and monitor output from the power lines. 11

12 Installation Dimensions in mm (inches) KF and KH Models ll KF and KH models have amplifier housing, connector plug and wiring adaptor, mounted on top of pilot stage. 3rd angle projection For overall valve dimensions, refer to individual valve drawings. Metal plug Cable outside diameter 8, to 1,5 (.31 to.41) Must be used for full EMC protection. See also warning note on page 3 4, (1.6) 25, (1.) ÄÄ ÄÄ ÄÄ ÄÄ LED LVDT failure, red 227, (8.9) LED ower on, green Remove plug for access to Gain (or Zero adjust ) potentiometer 62,1 (2.5) lastic plug G11. Cable maximum outside diameter 11, (.43) LVDT connection(s) 3, (1.2) 23,3 (.9) KFDG5V-5 48 (1.89) 23 (.91) 13 (.51) Solenoid plug (ISO 44/DIN 4365); black, marked 178 (7.1) 54 (2.13) G 1 / 8 ( 1 / 8 SF) gage port plug Note: gage port plug on reducer module has S threads 29 (8.23) Ø 7,2 (.2) 4 holes, c bored Ø 11 (.43), for mounting 4, (1.57) 45 34,63 (1.36) LVDT plug, gray 3 (1.18) 87 (3.43) Mounting boltcl = = 72,7 (2.86) 35,3 (1.39) 22 (.87) 139 (5.47) 27 (1.6) ort 98 (3.86) 261 (1.28) Mounting surface, seals supplied. For mating surface dimensions and subplate options, see catalog 2425 (size 5 with additional X and Y ports). For mounting bolt options, see catalog

13 KFDG5V-7 48, (1.89) 23 (.91) 13 (.51) Solenoid plug (ISO 44/DIN 4365); black, marked 178 (7.1) 54 (2.13) G 1 / 8 ( 1 / 8 SF) gage port plug (1.3) 217 (8.55) LVDT plug, gray Ø 11 (.43) x 4 holes and Ø 6,4 (.25) x 2 holes, for mounting. C bored Ø 17,5 (.68) and Ø 11 (.43) respectively to depth shown 33 (1.3) 95 (3.74) Mounting bolt CL KFDG5V-8 = = 46,4 (1.83) 95,2 (3.75) 48 (1.89) 23 (.91) 13 (.51) 1,6 (.42) (4.88) (1.97) ort 129 (5.8) 27 (1.63) Mounting surface, seals supplied. For mating surface dimensions and subplate options, see catalog For mounting bolt options, see catalog 2314 Solenoid plug (ISO 44/DIN 4365); black, marked 178 (7.1) G 1 / 8 ( 1 / 8 SF) gage port plug (2.24) Mounting bolt CL = = 57,5 (2.64) 117,5 (4.63) 249 (9.8) LVDT plug, gray 18,3 (.72) 126,4 (4.98) 77 (3.3) 188 (7.4) 336,1 (13.24) ort Ø 13,5 (.53) x 6 holes for mounting 59 (2.32) 127 (5.) Mounting surface, seals supplied. For mating surface dimensions and subplate options, see catalog For mounting bolt options, see catalog

14 KHDG5V-5 48 (1.89) 23 (.91) 13 (.51) 8 (.32) LVDT plug, black 227 (8.94) Solenoid plug (ISO 44/DIN 4365); black, marked 55 (2.17) G 1 / 8 ( 1 / 8 SF) gage port plug 45 34,63 (1.36) 213 (8.39) 194 (7.64) LVDT plug, gray Ø 7,2 (.2) x 4 holes, c bored Ø 11 (.43), for mounting 3 (1.18) 87 (3.43) Mounting bolt CL = = 72,7 (2.86) 35,3 (1.39) 22 (.87) (5.47) (1.6) 98 (3.86) 261 (1.28) ort Mounting surface, seals supplied. For mating surface dimensions and subplate options, see catalog 2425 (size 5 with additional X and Y ports). For mounting bolt options, see catalog 2314 KHDG5V-7 48 (1.89) 23 (.91) 13 (.51) 8 (.32) LVDT plug, black Solenoid plug (ISO 44/DIN 4365); black, marked 227 (8.94) 55 (2.17) G 1 / 8 ( 1 / 8 SF) gage port plug (1.3) 221 (8.7) 22 (7.95) LVDT plug, gray 33 (1.3) 95 (3.74) Mounting bolt CL = = 95,2 (3.75) 46,4 (1.83) 1,6 (.42) 124 (4.88) 5 (1.97) 129 (5.8) 27 (1.63) Mounting surface, seals supplied. For mating surface dimensions and subplate options, see catalog For mounting bolt options, see catalog

15 KHDG5V-8 48 (1.89) 23 (.91) 13 (.51) 8 (.32) LVDT plug, black 227 (8.94) Solenoid plug (ISO 44/DIN 4365); black, marked 55 (2.17) G 1 / 8 ( 1 / 8 SF) gage port plug 253 (9.96) LVDT plug, gray Ø13,5 (.53) x 6 holes for mounting 234 (9.21) (5.) 57 (2.24) 59 (2.32) Mounting bolt CL = = 57,5 (2.64) 117,5 (4.63) 18,3 (.72) 126,4 (4.98) 77 ort (3.3) 188 (7.4) 336,1 (13.24) Mounting surface, seals supplied. For mating surface dimensions and subplate options, see catalog For mounting bolt options, see catalog 2314 ilot-supply lug For K()*DG5V-5 and -8, as below For K()*DG5V-7, see cross-section on page 1. K()*DG5V-5 Valves Viewed from port end of main stage K()*DG5V-8 Valves Section through port of main stage M5 2,5 mm plug # Remove for internally piloted models 1 / 16 plug #113 Remove for internally piloted models 15

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