ZDBEE-1X proportional relief valve is a pilot-operated relief valve, which is driven by a proportional solenoid to achieve stepless setting and precise control of system pressure. This proportional valve can completely replace the same model from Rexroth. Huade hydraulic valves adopt the same standards as Rexroth, but the price is lower.
| General | ||
| Installation | optional | |
| Storage temperatue range (℃) | -20 to +80 | |
| Ambient temperature range | DBE and ZDBE(℃) | -20 to+70 |
| DBEE and ZDBEE(℃) | -20 to +50 | |
| Weight | DBE and ZDBE (Kg) | 2.4 |
| DBEE and ZDBEE (Kg) | 2.5 | |
| Hydraulic(measured at ʋ = 46 mm2/s and t= 40°C ±5℃ | ||
| Max. operating pressure | Ports P:P1-P2: A1-A2:B1-B2 MPa | 31.5 |
| Port T MPa | 5 | |
| Max. settable pressure | Pressure stage 5 MPa | 5 |
| Pressure stage 10 MPa | 10 | |
| Pressure stage 20 MPa | 20 | |
| Pressure stage 31.5 MPa | 31.5 | |
| Min. settable pressure at signal value 0 MPa | see characteristic curves | |
| Return pressure port A; with external pilot oil drain (Y) | separate and at zero pressure to tank | |
| Pilot oil flow L/min | 0.6to1.2 | |
| Max. flow L/min | 30 | |
| Pressure fluid | mineral oil(HL, HLP)to DIN 51 524 | |
| Pressure fluid temperature range | -20to+80 | |
| Viscosity range mm2/s | 15 to 380 | |
| Electrical | 24V DC | |
| Min.control current (mA) | 100 | |
| Max.control current mA | 1600 | |
| Solenoid coil resistance | Cold value at 20° C (Ω) | 0.54 |
| Max.warm value (Ω) | 7.8 | |
| Duty | 100 | |
| Electrical connections | DBE and ZDBE | With component plug to DIN EN 175 301~803 |
| Plug-in connector to DIN EN 175 301-803 | ||
| DBEE and ZDBEE | With component plug toE DlN 43 563-AM6-3 | |
| Plug-in connector toE DIN 43 563-BF6-3 | ||
| Valve protection to DIN 40 050 | IP 65 | |
| Control electronics For DBEE and ZDBEE | Integrated into the valve | |
| For DBE and ZDBE | ||
| Amplifier in Eurocard format analogue | HD-VT-VSPA1-1-1X/ | |
Features:
▶Valve for limiting a system pressure
▶Actuation via proportional solenoids
▶For subplate mounting or sandwich plate design
▶Valve and control electronics from a single source
▶Types HD-ZDBEE with integrated control electronics
①Low example spread of the command value pressure characteristic curve
②Independently adjustable up and down ramps
Application:
ZDBEE-1X proportional relief valve is suitable for hydraulic systems that require precise pressure control, such as engineering machinery, injection molding machines, metallurgical equipment and other fields.
Proportional pressure relief valves, types HD-DBE are actuated by means of a proportional solenoid. These valves are used to limit a system pressure. With these valves it is possible to steplessly adjust the system pressure, which is to be limited, in relation to the electrical command value.
These valves basically consist of a proportional solenoid (1), the housing (2), the valve cartridge (3), the spool (4) and the pilot poppet (8). The proportional solenoid converts the electrical current proportionally into a mechanical force. An increase in current causes a corresponding rise in the solenoid force. The solenoid armature chamber is filled with hydraulic fluid and is pressure-balanced. The setting of the system pressure is carried out via the proportional solenoids(1) in relation to the command value. Pressure arising from the system in port P acts on the right hand side of the spool(4). At the same time the system pressure acts via the control line (6) which is fitted with an orifice (5) on the spring loaded side of the spool (4). Via a further rifice (7) the system pressure acts on the pilot poppet (8) against the force of the proportional solenoid (1). Once the system pressure has reached the pre-set value the pilot poppet (8) lifts from its seat. Depending on the model, pilot oil can now flow away externally via port A (Y) or internally into the tank, this has the effect of limiting the pressure on the spring loaded side of the spool (4). If the system pressure continues to rise slightly then the higher pressure on the right hand side of the spool pushes the spool to the left into control position P to T. At a minimum control current -corresponding to a command value of zero -the minimum settable pressure will be set.
Structure of Proportional Pressure Relief Valve ZDBE-1X
Structure of Proportional Pressure Relief Valve ZDBEE-1X
In terms of functional design, proportional valve ZDBEE-1X basically corresponds to the ZDBE proportional relief valves. The only difference is that the proportional solenoid is equipped with a housing ⑩, within which the electronic controller is built. Power supply and set point voltage are received via a plug-in connector (11).
The set point-pressure characteristic curve is preset by the manufacturer based on the principle of minimum manufacturing tolerances. The ramp times for pressure increase and decrease can be independently adjusted using respective potentiometers.
Symbol of Proportional Pressure Relief Valve ZDBEE-1X
Address
No. 27, Yangsha Road, Huilong Town, Qidong City, Jiangsu Province, China
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