STW 0195, STW 0196

eneral

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
	Control spool 1	A → T	l/min	20
	Control spool 2	P → A	l/min	20
	Control spool 2	A → T	l/min	20
Maximum flow				See performance limits
Hydraulic fluid				see table
Hydraulic fluid temperature range			°C	-20 … +80
Hydraulic fluid temperature range	preferably		°C	+40 … +50
Viscosity range			mm²/s	20 … 380
Viscosity range	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
Zero shift upon change of	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 – containing water: If this hydraulic fluid is used, small amounts of dissolved zinc may get into the hydraulic system.

Size			6	10
Voltage type			Direct voltage
Maximum current consumption	of the amplifier	A	2
Maximum current consumption	of the amplifier (impulse current)	A	3
Maximum current	Output stage	A	1.7
Maximum current	Signal part	A	0.3
Actuated time ¹⁾		%	100
Maximum coil temperature ²⁾		°C	150
Protection class according to DIN EN 60529			IP65 (If a suitable and a correctly mounted mating connector are used.)
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
Enable input range	“F6”	V	9 … 35
Command value input	UQ “A6”	mA	10
Command value input range	UP “A6”	mA	0 … 10
Command value input range	IQ and IP “F6”	mA	4 … 20
Actual value output	UQ “A6”	V	± 10
Actual value output range	UP “A6”	mA	0 … 10
Actual value output range	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.

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

Brands	Rexroth