VALVE AMPLIFIER VT-SSPA1-50-1X/V0/I-24
Manufacturer: Bosch Rexroth
Material #: R901029783
Model : VT-SSPA1-50-1X/V0/I-24
***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-SSPA1-50-1X/V0/I-24 (R901029783) is a valve amplifier designed for proportional valves with solenoids that do not require position feedback. This compact and easily installed unit is engineered to facilitate quick commissioning and features an analog command value input of 4 to 20 mA. The device can be mounted on a valve connection base that adheres to the EN standard, with the capability of being adjusted in 90-degree increments for optimal positioning.
The VT-SSPA1-50-1X/V0/I-24 boasts a command value presetting function, where the solenoid current varies proportionally with the command value within a range of 0 to UB volts. When the command value exceeds a threshold of about 10 volts up to the supply voltage UB, the solenoid current remains nearly constant, making it suitable for switching applications.
Equipped with a ramp generator, this amplifier can control the rate of increase or decrease in control output, allowing separate adjustments for ramp-up and ramp-down times. This feature helps mitigate switch-on and switch-off impulses, contributing to smoother transitions during operation.
Additionally, this model includes a characteristic curve adjustment with potentiometers for zero point correction and maximum value setting. Its power output stage is freely clocking with an adjustable clock frequency via another potentiometer, ensuring that the regulated current signal matches the control output demand.
The VT-SSPA1-50-1X/V0/I-24 also incorporates various components like differential input, zero potentiometer for pilot current adjustment, command value attenuator for maximum current setting, and dither frequency potentiometer. It operates on a supply voltage of 24 VDC and comes in an analog connector design compatible universally with valves requiring up to 2.5 A current. The product's efficient design ensures reliable performance across various proportional valve applications without necessitating complex setup procedures.
$513.00 USD
More are expected on May 19, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as May 19, 2025 when ordered in
|
G |
Command value attenuator / maximum current |
|
Z |
Zero point potentiometer / pilot current |
|
t < |
Ramp time "Ramp up" |
|
t > |
Ramp time "Ramp down" |
|
f |
Clock frequency |
|
(1) |
Internal voltage adjustment |
|
(2) |
Voltage input |
|
(3) |
Zero point potentiometer “Z” / pilot current I (IN = 0 %) |
|
(4) |
Command value attenuator “G” / maximum current I (IN = 100 %) |
|
(5) |
Ramp time potentiometer “t<” and “t>” |
|
(6) |
Frequency range correction “f” |
|
(7) |
Power output stage |
|
Terminal / pin |
Signal designation |
|
+UB / 1
|
Operating voltage |
|
0 V / 3 |
0 V |
|
IN+ / 2 |
Command value |
|
IN- / 4 |
Reference potential |
Terminal connection
Danger of malfunctions
with EMC/ESD interferences affecting the connection cable
Do not install command value
connection lines in the gray area (arrow)!
The connection for protective earthing conductor is accessible after the
electronic circuit board has been removed.
Connection cross-section:
4 x 1.5 mm2 shielded (connect shield in control cabinet)
Cable diameter: 4.5...11 mm
Terminal connection
M12 connector, top view
The connection for protective earthing conductor is not provided
Connection cross-section:
4 x 0.75 mm2 shielded
(connect shield in control cabinet)
2-conductor technology
Switching application with constant current control Ramp function upon switch-onThe “IN+” input is bridged with supply voltage (+UB) in the connector, the IN- input is bridged with supply voltage (0 V) in the connector.
The maximum current must generally be adjusted according to the solenoid information using potentiometer "G". The ramp time "ramp up" (t <) can be set within the range of tmin to 5 s.
2-conductor technology
3-conductor technology
Switching application with constant current control
Switching with low control power
Ramp function can be adjusted separately when switching the control voltage on and off
The “IN+” input is connected to the control voltage
(Us = 24 V), the “IN–” input is bridged with supply voltage (0 V) in the connector.
The maximum current must generally be adjusted according to the solenoid information using potentiometer "G". When switched off ("IN+" = 0 V or "IN+" = open), a pilot current can be set at "Z". It serves to reduce the switch-on delay, particularly with ramp. If required, this value can be adjusted between approx. 0 mA and approx. 15 % of the rated current. The ramp times “ramp up” (t <) and “ramp down” – (t >) can be set within the range of tmin to 5 s.
3-conductor technology
4-conductor technology
The “IN+” input is connected to the control signal (Us = 0...10 V/24 V), the “IN–” input to the reference potential of the control voltage.
Pilot current and maximum current are set using potentiometers "Z" and "G" prior to commissioning. The current can now be proportionally adjusted according to the control voltage between the set pilot current and the set maximum current. The pilot current can be set in the range from approx. 0 to approx. 15 % of the rated current, the maximum current can be set in the range from 0 to Imax .
4-conductor technology
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