STW0196-1X/1V8-24CA6

Manufacturer: Bosch Rexroth

Material #: R901118994

Model : STW0196-1X/1V8-24CA6

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth STW0196-1X/1V8-24CA6 (R901118994) is a sophisticated piece of hydraulic engineering designed for precise control in fluid power applications. This proportional directional valve integrates digital control electronics IACP, offering users a completely adjusted unit that includes a position-controlled valve, pressure sensor, and field bus connection. It operates via proportional solenoids with a central thread and detachable coil, ensuring smooth and responsive control. Equipped with an integrated pressure sensor plate (optional), the STW0196-1X/1V8-24CA6 allows for accurate monitoring and regulation of system pressures. Its porting pattern adheres to ISO standards, ensuring compatibility and ease of integration into various hydraulic systems. The analog interface for command and actual value signals provides flexibility in system design, while the CAN bus interface supports CANopen protocol DS or Profibus-DP for robust communications. Quick commissioning is made possible through the use of PC-based commissioning software WINPED, which facilitates parameterization, diagnosis, and data management in a user-friendly manner. The valve's size conforms to component series X standards, highlighting its versatility across different applications. Functionally, when solenoids are not operated, this valve maintains spool position A-T (with version X additionally B-T), offering flow control Q, pressure control p, and substitutional control pQ capabilities. Command value presetting can be specified via either an analog interface or the field bus interface. Furthermore, the integrated digital control electronics enable error detection diagnosis for issues such as cable breaks or communication errors. It's important to note that internal leakage is inherent to these valves due to their design principle; thus precautions must be taken to ensure that the tank line does not run empty. Additionally, users are cautioned against opening the PG fitting or mechanically adjusting the adjustment nut as it can damage the valve.

$8,655.00 USD

More are expected on May 15, 2025

Add to Cart

Status: This product is temporarily out of stock.

Qty: Delivered as early as May 15, 2025 when ordered in

This product is eligible for factory repair.

Repairs from $1,169.00

3-way proportional directional valves with integrated digital control electronics IAC-P Completely adjusted unit consisting of position-controlled valve, pressure sensor and field bus connection Operation by means of proportional solenoids with central thread and detachable coil Valve control spool, position-controlled Integrated pressure sensor plate (optional) Porting pattern according to ISO 4401 Analog interface for command and actual value Design for CAN bus with CANopen protocol DS 408 or Profibus-DP Quick commissioning via PC and commissioning software WIN-PED

Set-up

The IAC-P valve basically consists of:

Housing (1) with connection surface Control spool (2) with compression spring (3) Solenoid and pole tube (4) with central thread Position transducer (5) Pressure sensor (6) Integrated digital control electronics IAC-P (7) with bus connection (X2) and central connector (X1).

Functional description

If solenoids (4) are not operated, spool position A → T (with version "0196-1X/1" additionally B → T) Functions: Flow control (Q) Pressure control (p) Substitutional control p/Q The command value presetting can alternatively be specified via an analog interface (X1) or via the field bus interface (X2, X3). The actual value signals are provided via an analog interface (X1) and can additionally be read out via the field bus (X2, X3). The controller parameters are set via the field bus (X2, X3). Separate supply voltage for bus/controller and power part (output stage) for safety reasons

The digital integrated control electronics enables the following error detection (diagnosis):

Cable break of pressure sensor supply line (6) Undervoltage Cable break position transducer (5) Communication error Watchdog Cable break of command value inputs

The following additional functions are available:

Pressure ramp Internal command value profile Enable function analog / digital Error output 24 V

WINPED PC program

To implement the project planning task and to parameterize the IAC-P valves, the user may use the WINPED commissioning software (see accessories):

Parameterization Diagnosis Comfortable data management on a PC PC operating systems: Windows 2000 or Windows XP

Qsoll	Q-Steuerung	p-Regelung
< 12 mA	A → T	inactive
> 12 mA	Substitutional closed-loop control: (A → T or P → A) Q control (Qcommand) with pressure limitation (pcommand) The following applies with active pressure limitation: Qactual ≤ Qcommand

Notice!

Due to the design principle, internal leakage is inherent to the valves, which may increase over the life cycle. The tank line must not be allowed to run empty. With corresponding installation conditions, a preload valve must be installed.

Important notice:

The PG fitting (11) must not be opened. Mechanical adjustment of the adjustment nut located below is prohibited and damages the valve!

01	02		03		04	05	06		07	08	09		10
STW		‒		/		V		‒	24			‒	*

01	3-way proportional directional valves with integrated digital control electronics IAC-P	STW
02	Size 6	0195
02	Size 10	0196
03	STW0196 Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions) - Size 10	1X
03	STW0195 Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions) - Size 6	2X
Rated flow NG6 (version "0195")
04	P → A: 10 l/min; A → T: 20 l/min	1
04	P → A: 20 l/min; A → T: 20 l/min	2
Rated flow NG10 (version "0196")
04	P → A: 65 l/min; A → T: 60 l/min; B → T: 60 l/min	1
Seal material
05	FKM seals	V
Pressure rating of the integrated pressure sensor
06	50 bar	3
	160 bar	5
	250 bar	8
07	Supply voltage 24 V	24
Bus interface
08	CANBus DS - 408	C
08	Profibus DP V0/V1	P
Electrical interface
09	Command value ±10 V	A6
09	Command value 4 to 20 mA	F6
10	Further details in the plain text	*

For applications outside these parameters, please consult us!

general

Type		STW 0195	STW 0196
Size		6	10
Installation position		any, preferably horizontal
Ambient temperature range	°C	-20 … +50
Storage temperature range	°C	-20 … +80
Weight	kg	2.4	6.5

hydraulic

Size				6	10
Maximum operating pressure	Port P (sensor 50 bar)		bar	50
	Port P (sensor 160 bar)		bar	160
	Port P (sensor 250 bar)		bar	250
	Port T (sensor 50 bar)		bar	50
	Port T (sensor 160 bar)		bar	160
	Port T (sensor 250 bar)		bar	210
	Port A (sensor 50 bar)		bar	50
	Port A (sensor 160 bar)		bar	160
	Port A (sensor 250 bar)		bar	250
	Port B (sensor 50 bar)		bar	50
	Port B (sensor 160 bar)		bar	160
	Port B (sensor 250 bar)		bar	250
Nominal flow		P → A	l/min		65
		A → T, B → T	l/min		60
	Control spool 1	P → A	l/min	10
		A → T	l/min	20
	Control spool 2	P → A	l/min	20
		A → T	l/min	20
Maximum flow				See performance limits
Hydraulic fluid				see table
Hydraulic fluid temperature range			°C	-20 … +80
	preferably		°C	+40 … +50
Viscosity range			mm²/s	20 … 380
	preferably		mm²/s	30 … 46
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1)				Class 20/18/15 according to ISO 4406 (c)
Hysteresis			%	≤ 0.1
Range of inversion			%	≤ 0.05
Response sensitivity			%	≤ 0.05
Zero shift upon change of	Hydraulic fluid temperature		%/10 K	≤ 0.15
	Operating pressure		%/100 bar	≤ 0.1

1)	The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.

Hydraulic fluid		Classification	Suitable sealing materials	Standards
Mineral oil		HL, HLP, HLPD, HHVLP, HVLPD	NBR / FKM	DIN 51524
Bio-degradable	Insoluble in water	HETG	NBR / FKM	ISO 15380
Bio-degradable	Insoluble in water	HEES	FKM	ISO 15380
	Soluble in water	HEPG	FKM	ISO15380
Containing water	Water-free	HFDU, HFDR	FKM	ISO 12922
Containing water	Containing water	HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620)	NBR	ISO 12922
Important information on hydraulic fluids:
For more information and data on the use of other hydraulic fluids please contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). The flash point of the process and operating medium used must be 40 K over the maximum solenoid surface temperature. Flame-resistant - containing water: Maximum pressure differential per control edge 50 bar 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: If this hydraulic fluid is used, small amounts of dissolved zinc may get into the hydraulic system.

electrical

Size			6	10
Voltage type			Direct voltage
Maximum current consumption	of the amplifier	A	2
	of the amplifier (impulse current)	A	3
Maximum current	Output stage	A	1.7
	Signal part	A	0.3
Actuated time 1)		%	100
Maximum coil temperature 2)		°C	150
Protection class according to DIN EN 60529			IP65 (with mating connector mounted and locked)
Power supply		V	24
Supply voltage range		V	19.4 … 35
Admissible residual ripple		Vpp	2
Earthing (GND)		V	0
Enable input range	"A6"	V	9 … 35
	"F6"	V	9 … 35
Command value input	UQ "A6"	mA	10
Command value input range	UP "A6"	mA	0 … 10
	IQ and IP "F6"	mA	4 … 20
Actual value output	UQ "A6"	V	± 10
Actual value output range	UP "A6"	mA	0 … 10
	IQ and IP "F6"	mA	4 … 20
Control voltage			Level as for pin 1
0 V reference potential			For pins 3, 6, 8 and 11 (connected to pin 2 in valve)
Error output			24 V (19.4 V to 35 V), 200 mA maximum load

1)	Connect the valve to the supply voltage only when this is required for the functional sequence of the machine.
2)	Due to the surface temperatures occurring at solenoid coils, the European standards ISO 13732-1 and ISO 4413 need to be adhered to.

Sensor technology

Overload protection	Sensor 50 bar	bar	110
	Sensor 160 bar	bar	320
	Sensor 250 bar	bar	500
Bursting pressure	Sensor 50 bar	bar	200
	Sensor 160 bar	bar	640
	Sensor 250 bar	bar	1000
Characteristic curve deviation		%	< 0.2
Hysteresis		%	< 0.1
Repetition accuracy		%	< 0.05
Setting time (10 ... 90 %)		ms	< 1
Long-term drift (1 year) under reference conditions		%	< 0.1
Conformity			CE according to EMC directive EN 61000-6-2 / EN 61326-2-3 and EN 61000-6-3 / EN 61326-2-3

(measured with HLP46, ϑÖl = 40 ±5 °C)

Transition function with stepped electric input signals; A → T

STW0195

Transition function with stepped electric input signals; P → A

STW0195

Frequency response

STW0195

Flow characteristic curve STW0195

(A → T, Δp = 5 bar)

Flow characteristic curve STW0195

(P → A, Δp = 5 bar)

Performance limits STW0195

Position-controlled
P → A 10 l/min, A → T: 20 l/min - A → T)
P → A: 20 l/min, A → T: 20 l/min - A → T)

Performance limits STW0195

Position-controlled
P → A 10 l/min, A → T: 20 l/min - P → A)

Performance limits STW0195

Position-controlled
P → A 20 l/min, A → T: 20 l/min - P → A)

Transition function with stepped electric input signals; A → T, B → T

STW0196

Transition function with stepped electric input signals; P → A

STW0196

Frequency response

STW0196

Flow characteristic curve STW0196

(A/B → T, Δp = 5 bar)

Flow characteristic curve STW0196

(P → A, Δp = 5 bar)

Performance limits STW0196

Position-controlled (A → T)

Performance limits STW0196

Position-controlled (P → A)

Performance limits STW0196

Position-controlled (B → T)

STW0195

STW0196

Connector pin assignment X1, 11-pole + PE according to EN 175201-804

Pin	Assignment of interface A6	Assignment of interface F6
1	24 VDC (u(t) = 19.4 V ... 35 V), Imax = 1.7 A (for output stage)
2	0 V ≙ load zero, reference for pins 1 and 9
3	enable input 9 ... 35 V ≙ enable on
4	± 10 V command value Q; Re > 50 kΩ	4 ... 20 mA command value Q; Re = 100 Ω
5	Reference for command values Q and p
6	± 10 V actual value Q (limit load 5 mA)	4 ... 20 mA actual value Q, (maximum load resistance 300 Ω)
7	0 ... 10 V command value p; Re > 50 kΩ	4 ... 20 mA command value p; Re = 100 Ω
8	0 ... 10 V actual value p (limit load 5 mA)	4 ... 20 mA actual value p, (maximum load resistance 300 Ω)
9	Control voltage, level as pin 1, Imax = 0.3 A (for signal part and bus)
10	0V reference potential for pins 3, 6, 8 and 11 (connected with pin 2 in valve)
11	Error output 24 V (19.4 V ... 35 V), 200 mA maximum load
PE	connected to cooling element and valve housing

Connector pin assignment for CAN bus X2/X3 (coding A), M12, 5-pole, pins/socket

Contact	Pin assignment
1	n.c.
2	n.c.
3	CAN_GND
4	CAN_H
5	CAN_L

Transmission rate kbit/s	20 ... 1000
Bus address	1 ... 127
CAN-specific settings: Baud rate and identifier can be set via the bus system and/or the DIL switches.

Connector pin assignment for Profibus DP, X2/X3 (coding B), M12, 5-pole, socket/pins

Contact	Pin assignment
1	+ 5 V
2	RxD/TxD-N (A line)
3	D_GND
4	RxD/TxD-P (B line)
5	Shield

Transmission rate up to 12 MBaud
Bus address	1 ... 126
Setting via DIL switch. The + 5 V voltage of the IFB-P serves to supply an external bus connection (as required)

Notice:

We recommend connecting the shields on both sides via the metal housings of the plug-in connectors. Using connector pins will affect the effectiveness of the shielding effect!

Internal screens are not required.

Block diagram / pin assignment

Command value: Command value 12 ... 20 mA at pin 4 and reference potential at pin 5 result in flow from P → A.

Command value 4 ... 12 mA at pin 4 and reference potential at pin 5 result in flow from A → T.

Actual value: Actual value 12 ... 20 mA at pin 6 and reference potential at pin 10 result in flow from P → A.

Actual value 4 ... 12 mA at pin 6 and reference potential at pin 10 result in flow from A → T.

Connection cable: Recommendation:– up to 25 m cable length for pins 1; 2 and PE: 0.75 mm²; otherwise 0.25 mm²

– up to 50 m cable length for pins 1; 2 and PE: 1.00 mm²

STW0195

Dimensions in mm

1	Valve housing
2	Proportional solenoid "b" with inductive position transducer
3	Integrated digital control electronics
4	Name plate
5	Space required to remove the mating connector
6	Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) Deviating from the standard: - without locating hole "G" - ports P, A, B and T with Ø8 mm

Recommended valve mounting screws (separate order):

4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9-flZn-240h-L

Tightening torque MA = 7 Nm ± 10 %

Material no. R913000064 or

4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9

Tightening torque MA = 8.9 Nm ± 10 %

STW0196

Dimensions in mm

1	Valve housing
2	Proportional solenoid "b" with inductive position transducer
3	Integrated digital control electronics
4	Name plate
5	Space required to remove the mating connector
6	Machined valve contact surface; Porting pattern according to ISO 4401-05-04-0-05 Deviating from the standard: Port T1 with Ø11.2 mm

Recommended valve mounting screws (separate order):

4 hexagon socket head cap screws ISO 4762 - M6 x 40 - 10.9-flZn-240h-L

Tightening torque MA = 12.5 Nm ± 10 %, material no. R913000058 or

4 hexagon socket head cap screws ISO 4762 - M6 x 40 - 10.9

Tightening torque MA = 15.5 Nm ± 10 %

Notice:

The dimensions are nominal dimensions which are subject to tolerances.

Project planning and maintenance instructions

Connect the valve to the supply voltage only when this is required for the functional sequence of the machine. Do not use electrical signals provided via control electronics (e. g. "No error" signal) for switching safety-relevant machine functions (see also EN ISO 13849 "Safety of machinery – safety-related parts of control systems"). If electro-magnetic interference is to be expected, take appropriate measures ensuring the function (depending on the application, e. g. shielding, filtration). The devices have been tested in the plant and are supplied with default settings. Only complete devices can be repaired. Repaired devices are returned with default settings. User-specific settings will not be applied. The machine end-user will have to re-transfer the corresponding user parameters.

The following is required for the parameterization via PC:			CANopen	PROFIBUS DP
1	Interface converter	(USB)	VT‑ZKO‑USB/CA‑1‑1X/V0/0 Material-No.: R901071963	VT‑ZKO‑USB/P‑1‑1X/V0/0 Material-No.: R901071962
2	Commissioning software		WinPed see download area
3	Connection cable	3 m	D-Sub / M12, coding A Material no.: R900751271	D-Sub / M12, coding B Material no.: R901078053

Port X1

Mating connector for X1	Dimensions	Material number
Mating connector according to DIN EN 175201-804 11-pole + PE, plastic version	Without cable (assembly kit)	R900884671
	With cable set 2 x 5 m 12-pole	R900032356
	With cable set 2 x 20 m 12-pole	R900860399
two cable ducts Ø 6 ... 8 mm

CAN bus (A coding)

Plug-in connector for X2	Dimensions	Material number
Round connector, processable, 5-pole, M12 x 1 Straight mating connector, metal design	(Line diameter 6 ... 8 mm)	R901076910

Profibus (B coding)

Plug-in connector for X2 and X3	Dimensions	Material number
X2 Round connector, processable, 5-pole, M12 x 1 Straight mating connector, metal design	(Line diameter 6 ... 8 mm)	R901075545
X3 Round connector, processable, 5-pole, M12 x 1 Straight mating connector, metal design	(Line diameter 6 ... 8 mm)	R901075550

Protective caps

Protective cap M12	Version	Material number
M12 protective cap (only for mating connector)		R901075563
M12 protective cap (only for line connector)		R901075564

STW0196-1X/1V8-24CA6

Manufacturer: Bosch Rexroth

Material #: R901118994

Model : STW0196-1X/1V8-24CA6

More are expected on May 15, 2025

This product is eligible for factory repair.

Set-up

Functional description

Notice!

Important notice:

general

hydraulic

electrical

Sensor technology

(measured with HLP46, ϑÖl = 40 ±5 °C)

Transition function with stepped electric input signals; A → T

Transition function with stepped electric input signals; P → A

Frequency response

Flow characteristic curve STW0195

Flow characteristic curve STW0195

Performance limits STW0195

Performance limits STW0195

Performance limits STW0195

Transition function with stepped electric input signals; A → T, B → T

Transition function with stepped electric input signals; P → A

Frequency response

Flow characteristic curve STW0196

Flow characteristic curve STW0196

Performance limits STW0196

Performance limits STW0196

Performance limits STW0196

STW0195

STW0196

Connector pin assignment X1, 11-pole + PE according to EN 175201-804

Connector pin assignment for CAN bus X2/X3 (coding A), M12, 5-pole, pins/socket

Connector pin assignment for Profibus DP, X2/X3 (coding B), M12, 5-pole, socket/pins

Notice:

Block diagram / pin assignment

STW0195

Recommended valve mounting screws (separate order):

STW0196

Recommended valve mounting screws (separate order):

Notice:

Project planning and maintenance instructions

Port X1

CAN bus (A coding)

Profibus (B coding)

Protective caps

Related Products

Information

Account