Proportional pressure reducing valve Type FTDRE 4 K

Transcription

1 RE 58 38/4.99 Proportional pressure reducing valve Type FTDRE 4 K Nominal size 4 Series 1X Maximum control pressure 18 / 3 bar Maximum operating pressure 2 bar Flow 5 L/min at p = 7 bar F9513 Type FTDRE 4 K1X/3 C4V Overview of contents Symbol Description Page Ordering details 1 Symbol 1 Function, section 2 Technical data 2 and 3 Characteristic curves 4 Unit dimensions 5 P T Ordering details FTDRE 4 K 1X/ V * Proportional pressure reducing valve, non standardised design, electrical actuation Nominal size 4 = 4 Cartridge valve = K Series to 19 = 1X ( to 19: unchanged installation and connection dimensions) Max. settable pressure at port 18 bar = 18 3 bar = 3 Solenoid wet (switches in the pressure fluid) Nominal voltage 12 V Nominal voltage 24 V = = G12 = G24 C2 = C4 = 1) V = Further details in clear text (special versions on request) FKM seals (for compatible pressure fluids see technical data on page 2) Electrical connections Terminal with plug type SS 2P (ITT-Cannon), with hand override Plug, 2-pin, type Junior Timer (MP) 1) The hand override can only be actuated after the plug has been removed. FTDRE 4 K 1/6

2 Function The proportional pressure reducing valve type FTDRE 4 K reduces the pressure in port in proportion to the solenoid current. It operates virtually independently from the pressure in port P. The valve is suitable for the control of directional valves and hydraulic cylinders, particularly those in the mobile and automotive technology sectors. The hydraulic pressure in port acts on the spool (1) against the solenoid force. With the proportional solenoid (2) de-energised port P is closed and port is connected to tank T. The valve can be supplied with the nominal voltages of 12 V and 24 V. Operation is only permissible with a suitable amplifier (see technical data).! Note! For mains operation an isolating transformer with separated windings is required. For optimum operation the solenoid must be filled with the pressure fluid (also see technical data "Installation"). T 2 1 P Technical data (for applications outside these parameters please consult us!) General Weight kg approx..19 Installation optional, preferably with the electrical connection hanging downwards, (when the valve is horizontally mounted or if the electrical connection is pointing upwards then a minimum back pressure p T has to be created to ensure that the valve stays full of oil) mbient temperature range C 3 to + 12 Solenoid surface protection coating to DIN Fe/Zn C Salt spray test to DIN 5 21 h 144 Rexroth Hydraulics 2/6 FTDRE 4 K

3 Technical data (for applications outside these parameters please consult us!) Hydraulic Control pressure (p ) at port see tolerance band on page 4 Input pressure (p P ) bar 2 Back pressure (pressure p T at port T) bar zero pressure (valve pressure tight up to 3 bar) attention: back pressure p T increases the set pressure p, even with current I = Flow details valid for BP Dexron II and + 8 C Flow ( p = 7 bar) L/min 5 Max. leakage flow at port T at p P = 2 bar and control current I = cm 3 /min 15 Max. control flow at p P = 2 bar, q V = and control current I = I max cm 3 /min 4 Stepped response with control current alteration t on max. 4 ms (for test set-up see page 3) t off max. 2 ms Pressure in bar p 18 % 95% % 5% t on t off t Control current in % Pressure fluid mineral oils to DIN , TF Dexron II, Fiat Tutela Multi F Pressure fluid temperature range C 3 to + 8 Degree of contamination maximum permissible degree of contamination of the pressure fluid is to NS 1638 class 9. We, therefore, recommend a filter with a minimum retention rate of ß 75. Electrical Voltage type DC mplifier nominal voltage V Max. control current Coil resistance (2 C) Ω Duty (with amplifier) % Electrical connection see ordering details Protection to DIN 4 5, part 9 Solenoid IP 6K5 Electrical connection IP 6K5 Chopper frequency (recommended) 1) Hz 2 Possible control electronics in plug-in amplifier housing 2) FTE 11 (see RE 58 11); FTE 12 (see RE 58 12); (separate order) FTE 15 (see RE 58 15); FTE 16 (see RE 58 16); FTE 18 (see RE 58 18); FTE 19 (see RE 58 19) Possible control electronics as carrier rail module 2) VT 18, VT 19, VT 117 and VT 118 (see RE ) (separate order) Power supply modules: VT 15 (12 V, see RE ) VT 16 (24 V, see RE ) 1) The chopper frequency must be suited to the application. Please take the application temperature into account. 2) The above mentioned control electronics type FTE can be optionally operated with 12 V and 24 V. Thus the 12 V valve type may always be used independent from the supply voltage. When using the above mentioned control electronics types VT the voltage must be considered. Note: For technical details (e.g. frequency response) on request. FTDRE 4 K 3/6 Rexroth Hydraulics

4 Characteristic curves with tolerance band Pressure stage 18 bar 22,5 2 2,2 bar Set pressure p at port in bar 17, ,5 7,5 5 6, bar 18,2 bar 2,5 4, bar (12 V),,2,4,6,8 1, 1,2 1,4 1,6 1,8, (24 V),36,8 Pressure stage 3 bar 32,5 3 27,5 Control current in 32 bar 3 bar 2, Set pressure p at port in bar 25 22,5 2 17, ,5 7,5 8,5 bar 5 5,3 bar 2,5 (12 V),,2,4,6,8 1, 1,2 1,4 1,6 1,8 (24 V),,36,8 Control current in 2, mplifier: FTE 11 Chopper frequency: f C = 2 Hz Installation position during testing: horizontal Inlet pressure: p P = 5 bar Test medium: BP Dexron II Test temperature: ϑ = 5 C Dead volumn at port : V = 135 ml Hysteresis: max. 5 % Rexroth Hydraulics 4/6 FTDRE 4 K

5 Unit dimensions (Dimensions in mm) Ø 14 17, ± 6 Ø 26,5 ±, ,2 ±,3 47,5 ±,5 3 47,5 ±, Ø 15 f7 9,5 22,75 ±,3 37 ±,3 max. 4 7 Ø 16 f7 M22 x 1,5 Ø 25 3 Ø 4 3 Ø 28,6 2,2 SW 27 1 Version C4 2-pin plug, type Junior Timer (MP) 2 Version C2 Terminal (WG 18) with 2-pin plug, type SS 2P (ITT-Cannon) 3 Hand override With version C4 the hand override can only be actuated after the plug has been removed. 4 O-ring 12 x 1.5 (FKM) 5 O-ring x 1.78 (FKM) 6 O-ring 19.4 x 2.1 (FKM) 7 Back-up ring 16 x 13.4 x 1 8 Back-up ring 15 x 12.8 x 1 9 Minimum depth of fit Spanner flat 27/F, M =12Nm+5Nm 9 45 ±5 15 ±1 R,1 +,1 35,5 max 29,3 min Ø 4 min 22,6 17,5 +,2 max 14,8 min Ø 4 min 9,7 2,4 +,1 T,5 min. Ø 26 Ø 23,8 +,1 M22 x 1,5 Ø 16 H8 Ø 15 H8, max, ,5,5 3 +,2 min 4,2 P Required surface finish in the areas of fit and chamfer R max 8,1 +,4 min Ø 4 9 FTDRE 4 K 5/6 Rexroth Hydraulics

6 Notes Mannesmann Rexroth G Rexroth Hydraulics D Lohr am Main Jahnstraße 3-5 D Lohr am Main Telefon / 18- Telefax / Telex Mannesmann Rexroth Limited Cromwell Road, St Neots, Cambs, PE19 2ES Tel: 14 8/ Fax: 14 8/ info@rexroth.co.uk The specified data is for product description purposes only and may not be deemed to be guaranteed unless expressly confirmed in the contract. ll rights reserved Subject to revision 6/6 FTDRE 4 K