1/10 RE 29161/07.05 Proportional pressure relief valve Type DBETX Nominal size 6 Unit series 1X Maximum working pressure P 315 bar, T 250 bar Nominal flow rate Q 1 l/min nom List of contents Features Contents Page – Directly operated valves (pilot valves) for limiting system pressure Features 1 – Adjustable by means of the solenoid current, see Charac- Ordering data 2 teristic curve, Technical data and selected valve electronics Preferred types, symbol 2 – Solenoid versions I = 0.8 A or I = 2.5 A max max Function, sectional diagram 3 – Pressure limitation to a safe level even with faulty electronics Technical data 4 (solenoid current I > I ) max External trigger electronics 5 to 7 – For subplate attachment, mounting hole configuration to Characteristic curve 8 ISO 4401-03-02-0-94 Unit dimensions 9 Subplates as per catalog sheet RE 45053 (order separately) – Plug-in connector to DIN 43650-AM2 included in scope of delivery – External trigger electronics with ramps and valve calibration in the following versions/designs (order separately) • Plug, setpoint 0...+10 V or 4...20 mA, RE 30264 • Module, setpoint 0...+10 V, RE 30222 • Europe card, setpoint 0...+10 V, RE 30109 2/10 Bosch Rexroth AG Hydraulics DBETX RE 29161/07.05 Ordering data DBETX1X G24 NZ4M* Proportional pressure relief valve Further information in plain text Mounting hole configuration to = X ISO 4401-03-02-0-94 M = NBR seals, suitable for mineral oils Unit series 10 to 19 = 1X (HL, HLP) to DIN 51524 (10 to 19: installation and connection dimensions unchanged) Z4 = Electrical connection Unit plug to DIN 43650-AM2 Max. pressure stage Plug-in connector included in scope of delivery up to 50 bar = 500 up to 80 bar = 800 N = Manual auxiliary override up to 180 bar = 180 Solenoid type (current) up to 250 bar = 250 8 = Solenoid current 0.8 A max. up to 315 bar = 315 25 = Solenoid current 2.5 A max. Voltage supply of trigger electronics = G24 24 V DC Preferred types Solenoid 0.8 A Solenoid 2.5 A Type Material Number Type Material Number DBETX–1X/50G24–8NZ4M 0 811 402 036 DBETX–1X/50G24–25NZ4M 0 811 402 034 DBETX–1X/80G24–8NZ4M 0 811 402 018 DBETX–1X/80G24–25NZ4M 0 811 402 030 DBETX–1X/180G24–8NZ4M 0 811 402 017 DBETX–1X/180G24–25NZ4M 0 811 402 031 DBETX–1X/250G24–8NZ4M 0 811 402 019 DBETX–1X/250G24–25NZ4M 0 811 402 035 DBETX–1X/315G24–8NZ4M 0 811 402 016 DBETX–1X/315G24–25Z4M 0 811 402 032 Symbol For external trigger electronics P T RE 29161/07.05 DBETX Hydraulics Bosch Rexroth AG 3/10 Function, sectional diagram General Basic principle Type DBETX proportional pressure relief valves are remote- To adjust the system pressure, a setpoint is set in the trigger controlled (pilot) valves in conical seat design. They are used to electronics. Based on this setpoint, the electronics control the limit system pressure. solenoid coil with regulated PWM (pulse-width-modulated) The valves are actuated by means of a proportional solenoid. current. The proportional solenoid converts the current to a me- The interior of the solenoid is connected to port T and is filled chanical force, which acts on a main spring by means of the with pressure fluid. armature plunger. An “additional” spring between the cone and With these valves, the system pressure that needs to be limited the seat contributes to stability and a minimal residual can be infinitely adjusted by the valve amplifier electronics pressure. The spring force acting on the cone and the pressure in relation to the solenoid current, at an oil flow � 1 l that is as in the valve seat balance one another at a constant oil flow close as possible to constant. (0.7...1 l/min). The “p ” pressure stage is determined by the max cone and seating bore configuration. Pressure limitation for maximum safety If a fault occurs in the electronics, so that the solenoid current (I ) would exceed its specified level in an uncontrolled max manner, the pressure cannot rise above the level determined by the maximum spring force. Plug-in connector Solenoid Valve body Accessories Type Material Number Cheese-head bolts 2 910 151 166 (4 x) f ISO 4762-M5x30-10.9 Plug VT-SSPA1-525-20/V0 (2.5 A) RE 30264 0 811 405 143 VT-SSPA1-508-20/V0 (0.8 A) 0 811 405 144 VT-SSPA1-525-20/V0/I (2.5 A) 0 811 405 145 VT-SSPA1-508-20/V0/I (0.8 A) 0 811 405 162 Module VT-MSPA1-525-10/V0 (2.5 A) RE 30222 0 811 405 127 VT-MSPA1-508-10/V0 (0.8 A) 0 811 405 126 Europe card VT-VSPA1-525-10/V0/RTP (2.5 A) RE 30109 0 811 405 079 VT-VSPA1-508-10/V0/RTP (0.8 A) 0 811 405 081 Plug-in connector Plug-in connector 2P+PE (M16x1.5) included in scope of delivery, see also RE 08008. 2P+PE Testing and service equipment Test box type VT-PE-TB1, see RE 30063 Current measuring adapter type VT-PA-5, see RE 30073 4/10 Bosch Rexroth AG Hydraulics DBETX RE 29161/07.05 Technical data General Construction Spool valve Actuation Proportional solenoid without position control, external amplifier Connection type Subplate, mounting hole configuration NG6 (ISO 4401-03-02-0-94) Mounting position Optional Ambient temperature range °C –20...+50 Weight kg1.9 Vibration resistance, test condition Max. 25 g, shaken in 3 dimensions (24 h) Hydraulic (measured with HLP 46, = 40 °C ±5 °C) oil Pressure fluid Hydraulic oil to DIN 51524...535, other fluids after prior consultation 2 Viscosity range recommended mm /s 20...100 2 max. permitted mm /s 10...800 Pressure fluid temperature range °C –20...+80 1) Maximum permitted degree of Class 18/16/13 contamination of pressure fluid Purity class to ISO 4406 (c) Direction of flow See symbol Max. set pressure (at Q = 1 l/min) bar 50 80 180 250 315 Minimum pressure (at Q = 1 l/min) bar23458 Note: At Q = 1.5 l/min the pressure levels stated here increase max Max. mechanical pressure limitation bar < 55 < 85 < 186 < 258 < 325 level, e.g. when solenoid current I � I max 2) Max. working press. (at Q = 1 l/min) bar Port P: 315 Max. pressure bar Port T: 250 Electrical Cyclic duration factor % 100 Degree of protection IP 65 to DIN 40050 and IEC 14434/5 Solenoid connection Unit plug DIN 43650/ISO 4400, M16x1.5 (2P+PE) Valve with solenoid type 0.8 A 2.5 A Max. solenoid current I 0.8 A 2.5 A max Coil resistance R � 22 3 20 Max. power consumption at 100 % VA 25 30 load and operating temperature 3) Static/Dynamic Hysteresis % � 4 Range of inversion % � 3 Manufacturing tolerance % � 10 Response time 100% signal change ms On � 60 / Off � 70 1) The purity classes stated for the components must be complied with in hydraulic systems. Effective filtration prevents problems and also extends the service life of components. For a selection of filters, see catalog sheets RE 50070, RE 50076 and RE 50081. 2) The maximum pressure in P is 315 bar in the standard version. 350 bar is available on request. 3) All characteristic values ascertained using amplifier 0 811 405 079 for the 2.5 A solenoid and 0 811 405 081 for the 0.8 A solenoid. RE 29161/07.05 DBETX Hydraulics Bosch Rexroth AG 5/10 Valve with external trigger electronics (plug, RE 30264) Circuit diagram/pin assignment 1) Version with 0...+10 V signal 2) Version with 4...20 mA signal Connection/calibration P1 – Ramp time P2 – Sensitivity P3 – Zero P4 – Dither frequency St1 – T erminal LED – U display B 6/10 Bosch Rexroth AG Hydraulics DBETX RE 29161/07.05 Valve with external trigger electronics (module, RE 30222) Circuit diagram/pin assignment Front view/calibration RE 29161/07.05 DBETX Hydraulics Bosch Rexroth AG 7/10 Valve with external trigger electronics (europe card, RE 30109) Circuit diagram/pin assignment 8/10 Bosch Rexroth AG Hydraulics DBETX RE 29161/07.05 Characteristic curve (measured with HLP 46, = 40 °C ±5 °C) oil Pressure in port P as a function of the setpoint Nominal flow rate = 1 l/min 3 U ) E [V] 4 4 I ) E 4,4 7,5 10,6 13,8 16,9 20 [mA] Valve amplifier 1) Zero adjustment 2) Sensitivity adjustment 3) Version: U = 0...+10 V E 4) Version: I = 4...20 mA E RE 29161/07.05 DBETX Hydraulics Bosch Rexroth AG 9/10 Unit dimensions (nominal dimensions in mm) Required surface quality of mating component Mounting hole configuration: NG6 (ISO 4401-03-02-0-94) For subplates, see catalog sheet RE 45053 1) Deviates from standard 2) Thread depth: Ferrous metal 1.5 x Ø Non-ferrous 2 x Ø PA T B F F F F 1 2 3 4 X 21.5 12.5 21.5 30.2 0 40.5 40.5 0 Y 25.9 15.5 5.1 15.5 0 –0.75 31.75 31 1) 1) 1) 1) 2) 2) 2) 2) 8 8 8 8 M5 M5 M5 M5 10/10 Bosch Rexroth AG Hydraulics DBETX RE 29161/07.05 Notes Bosch Rexroth AG © This document, as well as the data, specifications and other information Hydraulics set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be Zum Eisengießer 1 reproduced or given to third parties without its consent. 97816 Lohr am Main, Germany The data specified above only serve to describe the product. No state- Telefon +49 (0) 93 52 / 18-0 ments concerning a certain condition or suitability for a certain application Telefax +49 (0) 93 52 / 18-23 58 can be derived from our information. The information given does not release documentation@boschrexroth.de the user from the obligation of own judgement and verification. It must be www.boschrexroth.de remembered that our products are subject to a natural process of wear and aging. RE 29161/07.05 DBETX Hydraulics Bosch Rexroth AG Notes Bosch Rexroth AG © This document, as well as the data, specifications and other information Hydraulics set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be Zum Eisengießer 1 reproduced or given to third parties without its consent. 97816 Lohr am Main, Germany The data specified above only serve to describe the product. No state- Telefon +49 (0) 93 52 / 18-0 ments concerning a certain condition or suitability for a certain application Telefax +49 (0) 93 52 / 18-23 58 can be derived from our information. The information given does not release documentation@boschrexroth.de the user from the obligation of own judgement and verification. It must be www.boschrexroth.de remembered that our products are subject to a natural process of wear and aging. Bosch Rexroth AG Hydraulics DBETX RE 29161/07.05 Notes Bosch Rexroth AG © This document, as well as the data, specifications and other information Hydraulics set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be Zum Eisengießer 1 reproduced or given to third parties without its consent. 97816 Lohr am Main, Germany The data specified above only serve to describe the product. No state- Telefon +49 (0) 93 52 / 18-0 ments concerning a certain condition or suitability for a certain application Telefax +49 (0) 93 52 / 18-23 58 can be derived from our information. The information given does not release documentation@boschrexroth.de the user from the obligation of own judgement and verification. It must be www.boschrexroth.de remembered that our products are subject to a natural process of wear and aging.