Re29361 2013-07
Re29361 2013-07
pilot operated
RE 29361
                                                          ▶▶ Size 10 to 32
                                                          ▶▶ Component series 7X
                                                          ▶▶ Maximum operating pressure 350 bar
                                                          ▶▶ Maximum flow: 700 l/min
Similar figure
Features Contents
Ordering code
      01       02    03      04   05            06           07   08      09   10   11   12   13    14   15
  DBE          M                        ―       7X       /             G24                               *
Size
 04        Size 10                                                                                              10
           Size 25                                                                                              20
           Size 32                                                                                              30
Pressure rating 2)
 07        Up to 50 bar                                                                                         50
           Up to 100 bar                                                                                       100
           Up to 200 bar                                                                                       200
           Up to 315 bar                                                                                       315
           Up to 350 bar                                                                                       350
Supply voltage
 09        24 V DC voltage                                                                                     G24
Ordering code
      01         02       03   04   05         06          07   08      09        10   11   12     13    14    15
     DBE         M                       ―     7X    /                 G24                                     *
Electrical connection
 11        For type DBEM:
           Without mating connector; connector DIN EN 175301-803                                                                         K4 4)
           For type DBEME:
           Without mating connector; connector DIN EN 175201-804                                                                        K31 4)
Electronics interface
 12        Command value 0 to 10 V                                                                                                        A1
           Command value 4 to 20 mA                                                                                                       F1
           With DBEM                                                                                                                   no code
Seal material
 13        NBR seals                                                                                                                      M
           FKM seals                                                                                                                      V
           Attention: Observe compatibility of seals with hydraulic fluid used!
Symbols
Function, section
Valves of type DBEM are pilot operated pressure relief            control lines (6, 7). The connection from port P to T is
valves. They are used to limit the operating pressure in          released. The main spool (3) controls the set operating
hydraulic systems. By means of these valves, the pressure         pressure at port P.
to be limited can be continuously adjusted depending on           As hydraulic protection against inadmissibly high pressures,
the electric command value.                                       a spring-loaded pressure relief valve (2) has been inte-
These valves basically consist of the housing (1) with main       grated. This maximum pressure limitation is pre-set to the
spool insert (3), the sandwich plate valve with maximum           relevant pressure rating (see table page 6). In the operating
pressure limitation (2) and the proportional pilot control        range of the valve, the poppet (15) is held on the valve
valve (11).                                                       seat (17) by the spring (16) and is thus closed. If the pres-
Type DBEM...                                                      sure in the spring chamber of the main spool (3) exceeds
The pressure applied to channel P acts on the main                the maximum admissible set pressure of the valve, the
spool (3). At the same time, the pressure at port P is            poppet (15) is pressed against the compression spring (16)
applied to the spring loaded side of the main spool (3) via       and the connection into the spring chamber is opened. Via
the control lines (6, 7) provided with nozzles (4, 5). Via the    port Y (14), the pilot oil flows into the tank. Due to the
connection bore (9), the pressure is simultaneously applied       control lines (6, 7), a pressure drop occurs at the main
to the poppet (10) of the proportional pilot control              spool (3). The connection from port P to T is released. The
valve (11). The hydraulic force at the pilot poppet (10) acts     main spool (3) controls the set maximum operating pres-
against the command value-dependent force of the propor-          sure in port P. Via the adjustment element (19), the pre-set
tional solenoid (12).                                             pressure can be reduced, if necessary. Port Y (14) must be
If the hydraulic force exceeds the solenoid force, the pilot      externally piped to the tank. The connection to the tank
poppet is opened (10). The pilot oil can now flow via the         should be pressureless. Via port X (18), the valve may be
control line (13) into port Y (14) and to the tank; thus,         unloaded or the maximum pressure may be limited.
a pressure drop results at the main spool (3) over the
                                                                               
    
    
    
     
     
                                                                                                                          
    
                                                                                
                                                                                                                        
                                                                                
       
                                                                               
       
                                                                                
       
    
                                                                 Type DBEM10-7X/..XYG24K4..
                                                
Function, section
Type DBEME – with integrated electronics (OBE)
In terms of function and design, these valves correspond to
type DBEM. On the proportional solenoid, there is more-
over a housing (19) with the control electronics.
Supply and command value voltage are applied to the
connector (20).
In the factory, the command value pressure characteristic
curve is adjusted with little manufacturing tolerance.
Type DBEME...-7X/...YG24K31
Technical data
(For applications outside these parameters, please consult us!)
Technical data
(For applications outside these parameters, please consult us!)
      Important information on hydraulic fluids!                           ▶▶ Flame-resistant – containing water: Maximum pressure differen-
▶▶ For more information and data on the use of other hydraulic fluids         tial per control edge 210 bar, otherwise, increased cavitation
   refer to data sheet 90220 or contact us!                                   erosion. Life cycle as compared to HLP 30 to 100 %
▶▶ There may be limitations regarding the technical valve data (tem-          Fluid temperature maximum 60 °C
   perature, pressure range, life cycle, maintenance intervals, etc.)!     ▶▶ Bio-degradable: When using bio-degradable hydraulic fluids that
▶▶ The flash point of the hydraulic fluid used must be 40 K higher            are simultaneously zinc-solving, zinc may accumulate in the fluid
   than the maximum solenoid surface temperature.                             (per pole tube 700 mg zinc).
 Caution!
 At an ambient temperature of 70 °C and a duty cycle of 100 % with max. current, the coil reaches temperatures of
 up to 170 °C. Contact with the coil may lead to burns.
         Notice!
 Information on the environment simulation testing for the areas EMC (electromagnetic compatibility), see declaration
 on environmental compatibility data sheet 29162-U.
Electrical connection
(dimensions in mm)
Type DBEM
                   Connection at the connector                                    Connection at mating connector
to the amplifier
                                                                                                 Sealing
                                                                                                 material NBR
Type DBEME
Device connector allocation        Contact       Allocation interface "A1"                        Allocation interface "F1"
                                      A                           24 VDC (u(t) = 21 V to 35 V); Imax ≤ 1.5 A
Supply voltage
                                      B                                              0V
Reference potential actual value      C          Reference contact F; 0 V                         Reference contact F; 0 V
                                     D            0 to 10 V; RE = 100 kΩ                           4 to 20 mA; RE = 100 Ω
Differential amplifier input
                                      E                             Reference potential command value
Measuring output (actual value)       F                            0 to 1.6 V actual value (1 mV ≙ 1 mA)
                                                                          load resistance > 10 kΩ
Protective earth                     PE                           Connected to solenoid and valve housing
Mating connectors according to DIN EN 175201-804, solder contacts for line cross-section 0.5 to 1.5 mm2
Plastic version,                                                                                                           
                                                                                                                  
                                      
Metal version,                                                                                                            
                                                                                                                  
                                     
Electrical connection
Length in mm →
Function
The electronics are supplied with voltage via ports A and B.      The power stage of the electronics for controlling the pro-
The command value is applied to the differential amplifier        portional solenoid is a chopper amplifier with a cycle fre-
ports D and E.                                                    quency of approx. 180 Hz to 400 Hz. The output signal is
Via the characteristic curve generator, the command value         pulse-width modulated (PWM).
solenoid current characteristic curve is adjusted to the          For checking the solenoid current, a voltage can be mea-
valve so that non-linearities in the hydraulic system are         sured at the connector between pin F(+) and pin C(–) that
compensated for and a linear command value pressure               is proportional to the solenoid current. 1 mV corresponds
characteristic curve is created.                                  to 1 mA solenoid current
The current controller controls the solenoid current inde-
pendent of the solenoid coil resistance.
Block diagram
                           
                 24 VDC
                                                    
                 Supply
                                                        
                    GND
    Reference potential    
                                                                                                                     Chopper
            actual value            Differential    Characteristic curve                             Current
                                                                                                                     amplifier
                                    amplifier            generator                                  controller
        Command value
                                                                                                                                    Solenoid
    Reference potential                    
        command value
                                      
            Actual value
                                            
                           
                                                                                                             
                                                                                                       Oscillator
      Characteristic curves
      (measured with HLP46, ϑoil = 40 ±5 °C)
                                                                                                         Pressure in port P in % →
  Pressure in port P in % →
                                                                                                                                                                                  
                                               Command value in % →                                                                                                Command value in % →
      1)	              With valve type DBEM, the manufacturing tolerance at the
      external amplifier (type and data sheet see page 16) can
      be changed using the command value attenuator potenti-
      ometer "Gw". The digital amplifier is set using the param-
      eter "Limit".
      In this connection, the control current according to the
      technical data must not be exceeded.
      In order to be able to adjust several valves to the same
      characteristic curve, don't set the pressure higher than the
      maximum set pressure of the pressure rating with com-
      mand value 100 %.
      Set pressure depending on the flow                                                                                                                      Min. set pressure with command value 0
                              
                                                                                                                                                      
                                                                                                                       Min. set pressure in bar →
                                                                                                                                                      
                                                                                                                                                      
                                                                                                                                                                                                Size 32
                                                                                                                                                         
                                                                                                                                                                Size 10               Size 25
                                                                                                                                                         
                              
                                                                                                                                                       
                                                                                                                                                         
                                                                                
                                                                                                                                                         
                                                    Flow in l/min →
Min. set pressure in bar →
                                      Size 10                                                                                                            
                              
                                                                                                                                                                                         
                              
                                                                                                                                                                             Flow in l/min →
                                                          Version G
                                                          (Characteristic curves for size 25                                      The characteristic curves apply to output pressure in
                                                          and size 30 identical to version                                        T or Y = 0 bar in the total flow range.
                                                           „subplate mounting“)                                                    Notice: S
                                                                                                                                              o that the minimum set pressure is achieved,
                                                                                                                                                              the pilot current must not exceed 100 mA.
                                             
                                     Flow in l/min →
   Characteristic curves
   (measured with HLP46, ϑoil = 40 ±5 °C)
Command value pressure characteristic curves (measured with a flow of 24 l/min and with amplifier VT-MSPA1-1)
                                                                                       
                                                                                        
                                                                    Pressure in bar →
Pressure in bar →
                                                                                        
                                                                                        
                                                                                        
                                                                                        
                                                                                        
                                                                                        
                                                                                        
                                                                                         
                                                                                                                   
                             Command value in % →                                                    Command value in % →
                                                                                      
                                                                                         
                    
                                                                    Pressure in bar →
Pressure in bar →
                                                                                      
                    
                                                                                      
                                                                                      
                     
                                                                                       
                                                                                        
                     
                                                                                                                   
                             Command value in % →                                                    Command value in % →
Pressure rating 350 bar Pressure rating 100 bar (with amplifier VT-VSPA1-1)
                                                                                         
                    
                                                                                          
                                                                     Pressure in bar →
Pressure in bar →
                                                                                       
                                                                                       
                                                                                          
                                                                                       
                                                                                       
                                                                                          
                                                                                       
                                                                                        
                                                                                                                             
                                              
                                                                                                     Command value in % →
                             Command value in % →
   Characteristic curves
   (measured with HLP46, ϑoil = 40 ±5 °C)
                    Comparison series 5X and 7X using the pressure rating 315 bar as example
                    (with amplifier VT-SSPA1-1-1X with 800 mA coil)
                    
                                                                                               = Series 7X
                                                                                            = Series 5X
Pressure in bar →
                                                                                
                                           Command value in % →
                                                                                                                        
	
                                                                                                                                    
                                            
                                                                   
                                                                                                                            
          
                                                                                                
                                             
                  
                                                    
                                                            
                                            
                                                       
                                                                                        Coil and electronics
                                                      
                                                                                        freely rotatable!
                                                            
                                                                                           O-ring and plastic nut for coil fixation. The nut can
                                                                                           be loosened by rotating it counterclockwise
                                                                                           (1 turn). Afterwards, the solenoid coil can be
       
       
                                    
                                                             
        
                                                                                                            
                                                                                                                       
	
                                                                                                                                
                                               
                                                                                                                        
                                                                            
           
                                                                                        
                                               
                   
                                                          
                                                                    
                                               
                                                                                 
         
               
                                                                                                         
                               
       
                                                                                                            
                                             
                                               
                                                                                        Required surface quality of the
                                                                                                 valve contact surface
 5 Locating pin
 6 Maximum pressure limitation
 7 External pilot oil return,
    separately and to the tank at zero pressure
 8 Mating connector for type DBEM
 9 Integrated electronics (OBE)
                                                                                 Valve mounting screws and subplates see page 19.
10 Mating connector for type DBEME
11 Cable fastening
                                                                                                                  
                                                                                                                     
                                                                                                                                 
	
                                                                                                                                          
                                                   
                                                                         
                                                                                                                                  
       
                                                                                                        
                                                   
               
                            
                              
                                                                  
                                                       
                                                                                       
               
 5 Locating pin
 6 Maximum pressure limitation
 7 External pilot oil return,
   separately and to the tank at zero pressure
 8 Mating connector for type DBEM
 9 Integrated electronics (OBE)
                                                                                        Valve mounting screws and subplates see page 19.
10 Mating connector for type DBEME
11 Cable fastening
                  4       2         1              5                                     6       7           1        8
                                                                                                                 15
max. 200
                                             15
                                                  5,5
                                                                                                                                 192,5
                          G 1/4,
                  77,2
12 tief
                                                                                                                             155,6
                                                                              3
                                                                                                     101,5
        X                                     Y
        G 1/4,
        12 tief
                                                                                  58
                         58
                  12
                                                                   T
                                                                       G1/2
                                                                       Ø34
                                                                               47
            14
56
                                             P                         1
                                                                                             Coil and electronics
                  1
                                           G1/2               14
                                           Ø34                                               freely rotatable!
                                                              Ø11
                                            72                                               O-ring and plastic nut for coil fixation. The nut can
                                    45,5            62                                       be loosened by rotating it counterclockwise
                                    49,5                                                     (1 turn). Afterwards, the solenoid coil can be
                                                                                             rotated in any desired position. Subsequent fixation
                                                                                             applying 5±1 Nm.
                                                        179
                                                                                        45
                  80
                       29
max. 200
15 5,5
                                                                                                                                    192,5
                         G 1/4,
                 77,2
12 tief
                                                                                                                                155,6
                                                                              3
                                                                                                       101,5
       X
       G 1/4,                                  Y
       12 tief
                        58
                                                                                  58
                 12
                                                                    T
                                                                        Ø47
                                                                        G1
                                                                               47
                                                                              56
          18
                                          G1                   18                              freely rotatable!
                                          Ø47
                                                                Ø11                            O-ring and plastic nut for coil fixation. The nut can
                                          72                                                   be loosened by rotating it counterclockwise
                                   45,5              62                                        (1 turn). Afterwards, the solenoid coil can be
                                   49,5                                                        rotated in any desired position. Subsequent fixation
                                                                                               applying 5±1 Nm.
                                                         179
                                                                                          45
             80
                    29
               4         2         1                  5                                         6        7           1        8
                                                                                                                         15
                                                                                                                                  max. 200
                                             15
                                                     5,5
                                                                                                                                         192,5
                         G 1/4,
                 77,2
12 tief
                                                                                                                                     155,6
                                                                                   3
                                                                                                             101,5
          X                                      Y
          G 1/4,
                        58
                                                                                       58
          12 tief
                 12
                                                                      T
                                                                          G1 1/2
                                                                           Ø65
                                                                                    47
                                                                                   56
            22
                                          G1 1/2                 22
                                           Ø65                                                      O-ring and plastic nut for coil fixation. The nut can
                                                                  Ø11                               be loosened by rotating it counterclockwise
                                            72                                                      (1 turn). Afterwards, the solenoid coil can be
                                   45,5                62                                           rotated in any desired position. Subsequent fixation
                                   49,5
                                                                                                    applying 5±1 Nm.
                                                           179
                                                                                              45
              80
                    29
Dimensions
Accessories
(not included in the delivery)
External control for type DBEM                                         Data sheet                          Material number
(only standard version G24)
VT-MSPA1-1-1X/V0/... in modular design (analog)                        30223
VT-VSPD-1-2X/V0/.-0-1 in Euro-card format (digital)                    30523
VT-VSPA1-2-1X/V0/...in Euro-card format (analog)                       30115
VT-SSPA1-1-1X/V0/0-24 as plug-in amplifier                             30116
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