RE 50056, edition: 2016-09, Bosch Rexroth AG
Hydro-electric pressure switch
Features
▶ 4 pressure ratings
▶ Electrical connection
• with large cubic connector
▶ Micro switch with NC/NO contact function
▶ Potential-free switching of currents from 1mA to 2A
▶ UL approval
▶ CCC approval (except for MT version)
▶ Component series 3X
▶ Maximum operating pressure 400 bar
RE 50056
Edition: 2016-09
Replaces: 09.15
TB0229
Type HED 5
Contents
Features 1
Ordering data 2
Function, section, symbol 3
Technical data 4
Characteristic curves: Switching pressure differential 6
Dimensions 7
Electrical connection 8
Mating connectors 8
Further information 8
Inhalt
Features 1
Ordering data 2
Function, section 3
Technical data
(For applications outside these parameters, please consult
us!) 4
Technical data
(For applications outside these parameters, please consult
us!) 5
Characteristic curves: Switching pressure differential
(measured with HLP46, ϑ
Oil
= 40 ± 5 °C) 6
Dimensions: Type HED 5 …K14
(dimensions in mm) 7
Electrical connection according to DIN EN 175301-803 8
Mating connectors according to DIN EN 175301-803 8
Further information 8
2/8 HED 5 | Pressure Switch
Bosch Rexroth AG, RE 50056, edition: 2016-09
Ordering data
01 Piston type pressure switch HED5
02 Flange connection OH
03 Component series 30 … 39 (30 … 39: unchanged installation and connection dimensions) 3X
04 Max. pressure rating 50 bar 50
Max. pressure rating 100 bar 100
Max. pressure rating 200 bar 200
Max. pressure rating 350 bar 350
Electrical connection
05 Individual connection
Without mating connector; connector DIN EN 175301-803 K14
1)
Seal material
07 NBR seals no code
FKM seals V
Low-temperature seal (max. 315 bar) MT
Observe compatibility of seals with hydraulic fluid used! (Other seals upon request)
08 Further details in the plain text
01 02 03 04 05 06 07
HED5 OH – 3X / K14 *
1)
Mating connectors, separate order, see accessories
Accessories
▶ Mating connectors for the electrical connection see
Page 8.
Pressure Switch | HED 5 3/8
RE 50056, edition: 2016-09, Bosch Rexroth AG
Hydro-electric pressure switches of type HED 5 are piston
type pressure switches.
They basically consist of housing (1), installation kit with
piston (2), compression spring (3), adjustment element
(4) and micro switch (5).
The pressure to be monitored acts on the piston (2). The
latter is supported by the spring plate (6) and acts against
the continuously adjustable force of the compression
spring (3). The spring plate (6) transmits the movement of
the piston (2) onto the micro switch (5). This switches the
electric circuit on or off, depending on the circuit set-up.
Notes:
In order to increase the life cycle, the pressure switch
should be mounted with low vibrations and protected
from hydraulic pressure surges.
Function, section
Symbol
4/8 HED 5 | Pressure Switch
Bosch Rexroth AG, RE 50056, edition: 2016-09
Technical data
(For applications outside these parameters, please consult us!)
Hydraulic
Pressure rating bar 50 100 200 350
Max. operating
pressure
▶ NBR/FKM seals bar 350 350 350 400
▶ MT version bar 315 315 315 315
Pressure adjustment range (decreasing) bar 5...50 10...100 15...200 25...350
Pressure differential per rotation
1)
bar ≈10 ≈17 ≈38 ≈60
Hydraulic fluid
1)
see table below
Hydraulic fluid temperature range
(at the valve operating ports)
°C –30 … +80 (NBR seals)
–20 … +80 (FKM seals)
–40 … +80 (low-temperature seals)
Viscosity range mm
2
/s 10 … 800
Maximum permissible degree of contamination of the hydraulic fluid,
cleanliness class according to ISO 4406 (c)
Class 20/18/15
2)
Load cycles ≥ 4 million
General
Mass kg 0,2
Installation position any
Ambient temperature range °C –30 to +50 (NBR seals)
–20 to +50 (NBR seals)
–40 to +50 (low-temperature seals)
Sine test according to DIN EN 60068-2-6:1996-05 10...2000 Hz, max. 10 g, 10 double cycles
Transport shock according to DIN EN 60068-2-27:1995 03 Half-sine 15 g / 11 ms,
3 x in positive direction, 3 x negative direction
(a total of 6 single shocks per axis)
Noise test according to DIN EN 60068-2-64:1995-08 20...2000 Hz, 14 g
RMS
, 24 h
Conformity ▶ CE DIN EN 61058-1: 2002 / A2: 2008
DIN EN 60947-1: 2007 / A1: 2011
DIN EN 60947-5-1: 2004 / A1: 2009
DIN EN 60529: 1991 / A2: 2013
▶ UL UL 508 17th edition File No E223220 (up to 350bar)
▶ CCC GB 14048.5-2008
Hydraulic fluid Classification Suitable
sealing materials
Standards Data sheet
Bio-degradable HL, HLP, HLPD, HVLP, HVLPD NBR, FKM, low-temperature
seals
DIN 51524 90220
Bio-degradable ▶ Insoluble in water HETG NBR, FKM ISO15380 90221
HEES FKM
▶ Soluble in water HEPG FKM ISO15380
Schwerentflammbar ▶ Water-free HFDU, HFDR FKM ISO 12922 90222
▶ Containing water HFC (Fuchs Hydrotherm 46M,
Petrofer Ultra Safe 620)
NBR ISO 12922 90223
Important information on hydraulic fluids:
▶ For more information and data about the use of other hydraulic
fluids, refer to data sheets above or contact us!
▶ There may be limitations regarding the technical valve data (tempe
-
rature, pressure range, life cycle, maintenance intervals, etc.).
▶ The flash point of the hydraulic fluid used must be 40 K higher
than the maximum solenoid surface temperature.
▶ Flame-resistant – contains water:
– Maximum pressure differential per control edge 50bar
– Pressure pre-loading at the tank port > 20% of the pressure
differential, otherwise increased cavitation
– Life cycle as compared to operation with mineral oil HL,
HLP 50 to 100%
▶ Bio-degradable and flame-resistant: When using these hydraulic
fluids that are simultaneously zinc-solving, zinc may accumulate
(700mg zinc per pole tube).
Pressure Switch | HED 5 5/8
RE 50056, edition: 2016-09, Bosch Rexroth AG
Technical data
(For applications outside these parameters, please consult us!)
Electrical
Electrical connection EN 175301-803, 3-pole + PE
Maximum connection cross-section (mating connector) mm
2
1,5
Line entry (mating connector) M16 x 1,5
Protection class according to DIN EN 60529 IP 65 with mating connector fitted and screwed in place
Maximum switching frequency 1/h 4800
Switching accuracy (repetition accuracy) < ± 1% of the set pressure
Switches according to VDE 0630-1/DIN EN 61058-1
Transition resistance mΩ < 50
Insulation coordination Overvoltage category 3
Contamination Degree of contamination 3
Bounce time ▶ ON ms < 5
▶ OFF ms < 5
Utility model according to
IEC60947
Minimum current mA 1,0 with 24 V DC DC-12
Maximum current A 0,5 at 50 V DC, inductive DC-22
0,2 at 125 V DC, inductive DC-22
0,1 at 250 V DC, inductive DC-22
2,0 at 250 V AC AC-12
Switching power
Switching cycles Voltage U in V Ohmic load max. in A Inductive load, max. in A
2 million 250, AC 2 A for 2 million circuits (AC-12) 0,5 A, cos. ϕ = 0,6 for 2 million circuits (DC-12)
2 million 24, DC 2 A for 2 million circuits (DC-12) 0,5 A for 2 million circuits
3)
5 million
24, DC 5,0 mA for 5 million circuits (DC-12) –
1)
Direction of rotation:
– clockwise → set pressure increase
– anti-clockwise → set pressure decrease
2)
The cleanliness classes specified for the components must be
adhered to in hydraulic systems. Effective filtration prevents faults
and at the same time increases the life cycle of the components.
For the selection of the filters see www.boschrexroth.com/filter.
3)
Value does not comply with any utility category according to
IEC 60947
Notes:
All variants can be unloaded to p
min
= 0 bar.
(Observe the switching pressure differential!)
6/8 HED 5 | Pressure Switch
Bosch Rexroth AG, RE 50056, edition: 2016-09
Characteristic curves: Switching pressure differential
(measured with HLP46, ϑ
Oil
= 40 ± 5 °C)
Notes:
The switching pressure differential may increase within
the course of the life cycle due to the deterioration of
the oil quality and the number of load cycles.
0
2
3
1
4
10 20 30 40 50
6
7
5
35 15 25 35 45
8
Pressure rating 100
Pressure rating 350
Pressure rating 50
Pressure rating 200
Lower switching pressure in bar →
Lower switching pressure in bar →
Lower switching pressure in bar →
Lower switching pressure in bar →
Switching pressure differential in bar →Switching pressure differential in bar →
Switching pressure differential in bar →Switching pressure differential in bar →
Pressure Switch | HED 5 7/8
RE 50056, edition: 2016-09, Bosch Rexroth AG
Dimensions: Type HED 5 …K14
(dimensions in mm)
Required surface quality of
the device contact surface
Valve mounting screws (separate order)
4 hexagon socket head cap screws
ISO4762-M4X45-10.9-flZn-240h-L
(friction coefficient µ
total
= 0.09 to 0.14)
Tightening torque M
A
= 2 Nm ± 10 %
Material no. R913000370
1 Adjustment element
2 Plug-in connection according to EN 175301-803
(connection „K14“)
3 Mating connector without circuitry
(separate order, see page 8)
4 Mating connector with circuitry
(separate order, see page 8)
5 Space required to remove the mating connector
6 Seal ring (connection bore of the counterpart: max. Ø6)
Bosch Rexroth AG, RE 50056, edition: 2016-09
8/8 HED 5 | Pressure Switch
Bosch Rexroth AG
Hydraulics
Zum Eisengiesser 1
97816 Lohr am Main, Germany
Telefon +49 (0) 93 52 / 18-0
documentation@boschrexroth.de
www.boschrexroth.de
© This document, as well as the data, specifications and other information set
forth in it, are the exclusive property of Bosch Rexroth AG. It may not be
reproduced or given to third parties without the consent of Bosch Rexroth AG.
The data specified above only serve to describe the product. No statements
concerning a certain condition or suitability for a certain application can be
derived from our information. This information also does not release the user
from exercising his/her own judgment and conducting his/her own testing.
Our products are subject to a natural process of wear and aging.
“K14” without indicator light “K14” with indicator light
Mating connectors
1
3
2
PE
0 (MP)
ge
gn
p
Switching function
Terminals 1-2: Contact opens in case of pressure increase
Terminals 1-3: Contact closes in case of pressure increase
For connection “K14”
For details and more
mating connectors
see data sheet 08006
Color
Material number
Without circuitry With circuitry (indicator light) AC/DC, –20....+60 °C
240 V, –40...+125 °C 6 … 14 V 16 … 30 V 36 … 60 V 90 … 130 V 180 … 240 V
black R901017012 R901017030 R901017048 R901017032 R901017035 R901017037
Electrical connection according to DIN EN 175301-803
Mating connectors according to DIN EN 175301-803
Further information
Notes:
For general notes on safety, assembly or commissioning,
see operating instructions:
07600-B Hydraulic valves for industrial applications
