Rexroth VT-VRRA 1-527-20/V0/2STV | 0811405063 | Valve amplifier for high-response valves -Bộ khuếch đại van điện từ

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Bộ khuếch đại van điện từ Rexroth VT-VRRA 1-527-20/V0/2STV | 0811405063 | Valve amplifier for high-response valves

Bộ khuếch đại VT-VRRA1 điều khiển van điện từ servo tiêu chuẩn với phản hồi DC-LVDT cho hoạt động trực tiếp 4WRPH..L-2X và 2 giai đoạn 4WRL ..- 3X. Đây là những bộ khuếch đại cơ bản. Vì các thành phần này thường được sử dụng trong các ứng dụng vòng kín, các tính năng khác như độ dốc, thời gian và bù ống (bước nhảy) là không cần thiết./ The amplifier VT-VRRA1 controls standard servo solenoid valves with DC-LVDT feedback for direct operated 4WRPH..L-2X and 2-stage 4WRL..-3X. These are basic amplifiers. Since these components are normally used in closed loop applications, other features like ramp, time, and spool compenstion (jump) are not needed.
 

Features

- Bộ khuếch đại tương tự ở định dạng Eurocard/ Analog amplifiers in Eurocard format
- Giai đoạn đầu ra được kiểm soát/ Controlled output stage
- Kích hoạt đầu vào/ Enable input
- Đầu ra chống ngắn mạch/ Short-circuit-proof outputs
- Tùy chọn điều chỉnh: Điểm không van/ Adjustment options: Valve zero point
- Phát hiện đứt cáp cho cáp có giá trị thực tế/ Cable break detection for actual value cable
- Điều khiển vị trí vòng kín với các đặc tính PID/ Closed-loop position control with PID characteristics
- Controlled output stage
- Enable input
- Short-circuit proof outputs
- Adjustment possibilities – zero point of valve
- Cable break detection for actual value cable
- Position control with PID behavior

- Component series 2X
- Analog, euro-card format
- Suitable for controlling pilot operated directional control valves, progressive with linear fi ne control

4WRL 10...35 V/V1...M-3X..,
4WRL 10...35 E/W...S-3X...,
4WRL 10...25 V/V1...M-3X...-750,
3WRCB 25...50...M-1X...
 

Preferred types

Amplifier type	Material number	For directional control valves, pilot operated, with electrical position feedback
VT-VRRA1-527-20/V0/2STV	0811405063	4WRL 10…35 V/V1…M-3X…
		4WRL 10…35 E/W…S-3X…
		4WRL 10…25 V/V1…M-3X…-750
		3RCB 25…50…M-1X…

Suitable card holder:
- Open card holder T 3002-1-2X/32F

 

Block diagram with pin assignment, option 2STV

 

Block diagram with pin assignment, option PO-IS

 

Technical data (For applications outside these parameters, please consult us)

Supply voltage
UB at z2 – b2
Nominal 24 V = battery voltage 21...40 V, rectified alternating voltage Ueff = 21...28 V (one-phase, full-wave rectifier)

Smoothing capacitor, separately
at z2 – b2
Recommendation: capacitor module VT 11110 (see data sheet 30750)
(only necessary if the ripple of UB > 10 %)

Valve solenoid, max.
A/VA
2.7/40 (pilot control valve, size 6)

Current consumption, max.
A
1.7
Current consumption may increase with min. UB and extreme cable lengths to the control solenoid

Power consumption (typical)
W
37

Input signal (command value)
b20: 0...±10 V
z20: 0...±10 V ｝Differential amplifier
(Ri = 100 kΩ)  ｝Differential amplifier

Signal source
Potentiometer 10 kΩ
Supply with ±10 V from b32, z32 (10 mA) or external signal source

Enable output stage
At z16, U = 8.5...40 V, Ri = 100 kΩ, LED (green) on front panel

Position transducer Supply
b30: –15 V
z30: +15 V

Pilot control valve
          Actual value signal b22: 0...±10 V
          Actual value reference b24

Main stage
          Actual value signal b26: 0...±10 V
          Actual value reference b28

Solenoid output
b6 – b8 Imax
Clocked current controller
2.7 A

Cable lengths between amplifier and valve
Solenoid cable: Up to 20 m 1.5 mm2
                          20 to 60 m 2.5 mm2
Position transducer: 4 x 0.5 mm2 (shielded)

Special features
Cable break protection for actual value cable, Position control with PID behavior, Pulsed output stage, Fast energization and fast deletion for short actuating times, Short-circuit-proof outputs

Adjustment
Zero point via trimming potentiometer ±5 %

LED indicators
Green: Enable
Yellow: Cable break actual value
Red: Undervoltage(UB too low)

Error message
– Cable break actual value
– UB too low
– ±15 V stabilization
z22: Open collector output to +UB
Max. 100 mA; no error: +UB

Circuit board format
mm
(100 x 160 x approx. 35) / (W x L x H)
Europe format with front panel 7 TE

Plug-in connection
Connector DIN 41612 – F32

Ambient temperature
°C
0...+70

Storage temperature range
°C
–20...+70

Weight
m
0.36 kg

Notice:
Power zero b2 and control zero b12 or b14 or z28 must be separately led to the central ground (neutral point).
 

Display/ adjustment elements

 

Dimensions (dimensions in mm)

 

Project planning information / maintenance instructions / additional information

- The amplifi er card may only be unplugged and plugged when de-energized.
- The distance to aerial lines, radios and radar systems must be suffi cient (> 1 m).
- Do not lay solenoid and signal lines near power cables.
- For signal lines and solenoid conductors, we recommend using shielded cables.
  The cable shield must be connected to the control cabinet extensively and must be as short as possible.
- The valve solenoid must not be connected to free-wheeling diodes or other protection circuits.
- The cable lengths and cross-sections specifi ed on page 5 must be complied with.
 

- Xem chi tiết Tài liệu kỹ thuật/ Datasheet Bộ khuếch đại van điện từ Rexroth VT-VRRA 1-527-20/V0/2STV | 0811405063