VT-SSBA1-PWM-1X/V002/15

Manufacturer: Bosch Rexroth

Material #: R901354307

Model : VT-SSBA1-PWM-1X/V002/15

***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 VT-SSBA1-PWM-1X/V002/15 (R901354307) is a sophisticated switching amplifier designed to enhance the performance and efficiency of standard directional valves equipped with 24V solenoids. This device is engineered to be mounted directly onto the K connector of the valve, ensuring a seamless integration into hydraulic systems. One of the primary capabilities of this switching amplifier is its ability to significantly reduce the switching time of directional valves. It achieves this by initially overexciting the solenoid with 24V for a brief period, which is then followed by a reduction in voltage. The necessary holding current is maintained through pulse width modulation (PWM), optimizing operational efficiency. In addition to its fast-switching feature, the VT-SSBA1-PWM-1X/V002/15 offers substantial energy savings. After a set power supply time and successful hydraulic valve actuation, it transitions to PWM mode, considerably lowering power consumption compared to continuous current methods. This results in holding power that is less than what would be required for a 24V valve at the same supply voltage, offering cost savings over time. The unit also includes an enable input feature that, when activated with a high signal, causes an LED status display to flash yellow, providing visual feedback on operational status. To assist users in matching their valves with this amplifier, Bosch Rexroth has included detailed technical data sections that outline both switching times and energy-saving potential for various valve configurations. The PWM functionality ensures precise control over on/off ratios at 24V, further enhancing the versatility and applicability of this device in various hydraulic applications.

$183.00 USD

More are expected on March 18, 2025

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Status: This product is temporarily out of stock.

Qty: Delivered as early as March 18, 2025 when ordered in

The switching amplifier VT-SSBA1-PWM is directly mounted at the K4 connector of the valve.

It is supplied with 24 V direct voltage. If at wire 2 (enable "IN"), a high-signal is applied, the voltage profile is applied at the valve according to the functional diagram. If the enable input is switched, the status display LED is flashing "yellow".

Fast switching (V001)

As fast switching amplifier, the VT-SSBA1-PWM considerably reduces the switching time of standard directional valves in connection with 12 V solenoids.

On switching on, the solenoid is overexcited with 24 V by 100 %. Afterwards, the voltage is reduced and the required holding current is set via pulse width modulation.

The switching time table in section Technical data illustrates the assignment of the valves to the switching amplifier.

Energy saving (V002)

If 24 V standard directional valves are used, the switching amplifier considerably reduces the continuous current to save energy.

After a defined power supply time and the connected hydraulic switching of the valve, the system switches to pulse width modulation and the power is considerably reduced. This leads to a holding power under the power of a 24 V valve at 24 V supply voltage.

The table on energy saving in section Technical data illustrates the assignment of the valves to the switching amplifier.

PWM at V002: on/off ratio = 60/40

01	Connector switching amplifier with pulse width modulation (PWM)	VT-SSBA1-PWM

02	Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions)	1X

03	Quick switching of valves with 12 V solenoids	V001
03	Energy saving by power reduction at valves with 24 V solenoids	V002

04	Cable length 5 m	5
	Cable length 10 m	10
	Cable length 15 m	15

05	Further details in the plain text	*

01		02		03		04	05
VT-SSBA1-PWM	‒	1X	/		/		*

General

Type / version	VT-SSBA1-PWM-1X/V001	VT-SSBA1-PWM-1X/V002
Component series	1X
Design	Plug-in connector

Electric

Type / version				VT-SSBA1-PWM-1X/V001	VT-SSBA1-PWM-1X/V002
Operating voltage	nominal	U	V	24
	Lower limit value	UB(t)min	V	21.6
	Upper limit value	UB(t)max	V	26.4
Control voltage	ON	U	V	10…30 (I = 2.5…12 mA)
	OFF	U	V	<3.5
Clock frequency PWM switching amplifier		f		PWM operation 300…500 Hz
Switch-on pulse duration		t	ms	100…115	300…330
PWM duty factor		t	%	40 ±5 on	60 ±5 on
Holding current		Imax	A	2

Sonstige Angaben

Type / version				VT-SSBA1-PWM-1X/V001	VT-SSBA1-PWM-1X/V002
Connection to the solenoid	Standard			EN 175301-803
Connection cross-section		S		4 x 0.75 mm2
Anschlussart				Potted-in cable with open end, jacket: PUR-JZ black, wire insulation: PP black, green/yellow	Potted-in cable with open end
Cable diameter		d	mm	6.5
Protection class according to DIN EN 60529				IP 65/IP 67
Conformity				According to EMC directive 2004/108/EG applied harmonized standards: EN 61000-6-2:2005, EN 61000-6-3:2007
Ambient temperature range		ϑ	°C	-20 … 60
Storage temperature range		ϑ	°C	-20 … 60
Weight		m	g	350

For applications outside these parameters, please consult us!

Switching times (with variant V001)

Comparison of 24 V coil (control standard 24 V signal) with 12 V coil (control viaVT-SSBA1-PWM-1X/V001…)

Additional valves on request.

If the connector switching amplifier is used, the power limit may be improved. The degree of improvement depends on the respective switching symbol of the valve.
Additional information on request.

Notice:

The specified switching times correspond to the time of signaling until a pressure change of 5 %. The switching times are specified for the same power limits as documented in data sheets 23178, 23340 and 23352 and for a horizontal installation position. The use of plug-in amplifiers V001 is not possible in connection with valves with amplified spring.

Switching times for 5-4WE10…5X valves (5 chamber)				Switching times for Z-4WE6…3X valves
Control spool	Coil	Switching time in ms		Control spool	Coil	Switching time in ms
		ON	OFF			ON	OFF
J2	24 V	170	23	E63	24 V	27	14
	12 V at V001	44			12 V at V001	15
X84	24 V	39	67	E68	24 V	27	14
	12 V at V001	20			12 V at V001	15
				X250	24 V	31	20
					12 V at V001	16
				X252	24 V	47	13
					12 V at V001	17

Switching times for 4WE10…5X valves (3 chamber)				Switching times for 4WE6…6X valves
Control spool	Coil	Switching time in ms		Control spool	Coil	Switching time in ms
		ON	OFF			ON	OFF
C	24 V	58	48	C	24 V	27	14
	12 V at V001	26			12 V at V001	17
D	24 V	78	28	D	24 V	42	11
	12 V at V001	29			12 V at V001	25
E	24 V	55	35	E	24 V	32	11
	12 V at V001	22			12 V at V001	22
E67	24 V	84	31	E67	24 V	39	12
	12 V at V001	24			12 V at V001	21
J	24 V	63	51	G	24 V	33	11
	12 V at V001	28			12 V at V001	28
J2	24 V	47	31	J	24 V	37	17
	12 V at V001	24			12 V at V001	17
Y	24 V	57	31	L	24 V	36	15
	12 V at V001	23			12 V at V001	21
Y11	24 V	46	50	M	24 V	47	26
	12 V at V001	28			12 V at V001	33
				X7	24 V	62	13
					12 V at V001	47

Notice:

The use of plug-in amplifiers V002 is not possible in connection with valves with amplified spring. Reduction of the coil temperature by at least 30 K

Energy saving (with variant V002)

Energy saving with valves with 24 V coils using plug-in amplifier VT-SSBA1-PWM-1X/V002…

5-.WE (5-chamber version)			Power consumption for Z-4WE6…3X valves
Control spool	Power in W at 24 V coil	Power in W at 24 V coil with V002	Control spool	Power in W at 24 V coil	Power in W at 24 V coil with V002
J2	30	18	E63	30	18
X84			E68
			X250
			X252

Power consumption for 4WE10…5X valves (3 chamber)			Power consumption for 4WE6…6X valves
Control spool	Power in W at 24 V coil	Power in W at 24 V coil with V002	Control spool	Power in W at 24 V coil	Power in W at 24 V coil with V002
C	40	24	C	30	18
D			D
E			E
E67			E67
J			G
J2			J
Y			L
Y11			M
			X7

Wire 2: enable "IN"

Wire 1: Operating voltage "+UB" (+24 V)

Wire 3: Operating voltage "GND"

Wire GNYE: Protective earth "PE"

4/2-way version

Dimensions in mm

The connector switching amplifier may only operated in accordance with the limits and applications defined in the data sheet. Sufficient distance to radios and mobile phones is required (>> 1 m). In case of overload or short-circuit, the output is de-energized. Before switching it on again, enable signal "IN" has to be switched at "ON" (< 3.5 V). There is no galvanic isolation between the input and output. If used as power reducer, the power in PWM operation is not sufficient for repeated switching of the valve after exceeding the power limit in switched state. In case of an error, the temperature of the valve solenoid may increase. Take external monitoring measures to ensure that the maximum admissible surface temperature of the solenoid is complied with. The VT-SSBA1-PWM is no safety-relevant part of a control system according to EN ISO 13849-1:2006. To comply with safety requirements, the following points must be observed: In case the safety function is required, the voltage supply and the enable input of the VT-SSBA1-PWM is to be switched off by a suitable switching element with appropriate reliability. If persons have to enter the danger zone with activated VT-SSBA1-PWM, additional measures for guaranteeing their safety have to be taken for the reasons specified above.