Артикул: RX7127
Valve amplifiers for proportional directional valves VT‑VRPA2‑1‑1X, VT‑VRPA2‑2‑1X
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Description
- Component series 1X
- Analog, Euro-card format
- For valves: 4WRE
Features
- Differential inputs for voltage and current
- Four callable command value inputs, input for ramp time
- Digital inputs for enable, ramp, inverting and command value call-up
- Model T5 with 5 ramps and quadrant recognition
- Adjustable ramp times, step level and maximum solenoid current
- Reverse polarity protection for the operating voltage
- Switchable measuring socket with version T5
- "Ready for operation" output
- Power supply unit with DC/DC converter without raised zero point
Product description
By closing the jumper J3, the ramp times specified above can be increased tenfold.
Characteristic curve generator [11]
Using the adjustable characteristic curve generator, step level and maximum values for positive and negative signals can be set separately, adjusted to the hydraulic requirements. The actual development of the characteristic curve through the zero point is not stepped but linear.
Amplitude limiter [12]
The internal command value is limited to approx. ±110 % of the nominal range.
Oscillator [14]
The oscillator creates the control signal for the inductive position transducer.
Demodulator [15]
The demodulator supplies the actual value signal of the valve spool position from the position transducer signal. 100 % ≙ 10 V
Position controller [17]
The position controller is optimized in a valve-specific manner.
Power output stage [16]
The current output stage creates the clocked solenoid current for the proportional valve. The solenoid current is limited to 2.5 A to 2.8 A per output. The output stage outputs are short-circuit-proof. The output stages are de-energized in case of an internal fault signal or if the enable signal is missing.
Fault recognition [17]
The position transducer cable is monitored for cable break and short-circuits on the primary side as well as for over-currents at the output stage.
[ ] = Assignment to the block diagrams
There is no switch-over between current and voltage input. The inputs are permanently available (see block diagram).
Command value call-ups [4]
Four command value signals "w1" to "w4" can be called up. The external command value voltages (command value 1 to 4) are either defined directly by the regulated voltage outputs +10 V and –10 V or by external potentiometers. If these command value inputs are directly connected to the regulated voltages, the command values are set at the potentiometers "w1" to "w4". When using external potentiometers, the internal potentiometers will function as attenuators or limiters.
Only one call-up can be operated at a time. If several call-ups are operated simultaneously, call-up 1 has the lowest priority and call-up 4 has the highest priority.
The respective active call-up is indicated by a yellow LED on the front plate.
Command value inverting [7]
The command value created internally from the input signals, the command value call-ups and the zero point offset signal can be inverted by an external signal or jumper J1. Inverting is indicated by an LED "–1" on the front plate.
Enable function [8]
The enable function enables the current output stages and forwards the internal command value signal to the ramp generator. The enable signal is indicated by an LED on the front plate. If enable is connected, the internal command value is changed (with any kind of command value presetting) by the set ramp time. Thus, a controlled valve does not open abruptly.
Ramp generator [9]
The ramp generator limits the incline of the control output. The downstream step functions and amplitude attenuators do not extend or shorten the ramp time.
Using jumper J2, the ramp time is set to a minimum (<2 ms) (ramp off).
External ramp time setting:
Using an external potentiometer, the internally set ramp time can be extended. The setting can be verified by means of the measuring socket. In case of a cable break, the internal default setting will be valid automatically.
Table for setting and measurement of the ramp time:
Power supply unit [1]
The amplifier card has a power supply unit with making current limiter. This unit supplies all internally required positive and negative supply voltages.
Command value presetting
The internal command value signal is calculated from the total (summation [6]) of the external command value signal available at the differential input [2] and at the current input [3], the called-up signal [4] and the zero point offset [5] (zero point potentiometer "Zw").
The following applies:
| Value at measuring socket | U/V | 5 | 3 | 2 | 1 | 0.5 | 0.3 | 0.2 | 0.1 | 0.05 | 0.03 | 0.02 |
| Current ramp time (±20 %) | t/ms | 20 | 33 | 50 | 100 | 200 | 333 | 500 | 1000 | 2000 | 3333 | 5000 |
| Standard values | Current input | Differential input | Command value socket | Solenoid |
| -100 % | 4 mA | -10 V | -10 V | a |
| 0 % | 12 mA | 0 V | 0 V | |
| +100 % | 20 mA | +10 V | +10 V | b |
| If the current input is not wired-up or if the cable of the current command value is broken, the resulting internal command value signal is 0%. | ||||
Type code
| 01 | Valve amplifier for proportional flow control valves with electrical position feedback, analog, euro-card format | |
| 02 | For valves: 4WRE 6...2X | |
| For valves: 4WRE 10...2X | ||
| 03 | Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions) | |
| 04 | Version: standard | |
| 05 | Option: with one ramp time | |
| Option: with five ramp times | ||
| 06 | Further details in the plain text |
| 01 | 02 | 03 | 04 | 05 | 06 | |||||
Technical data
Position transducer
| Type / version | VT-VRPA2-1-1X...T1, VT-VRPA2-2-1X...T1 | VT-VRPA2-1-1X...T5, VT-VRPA2-2-1X...T5 | |||
| Oscillator voltage | U | V | 5 (I = 10 mA) | ||
| Oscillator frequency | f | kHz | 5.6 | ||
Supplementary information
| Type / version | VT-VRPA2-1-1X...T1, VT-VRPA2-2-1X...T1 | VT-VRPA2-1-1X...T5, VT-VRPA2-2-1X...T5 | |||
| Reference voltage | Potentiometer supply | U | V | ±10 ±2% (Imax = 25 mA, short-circuit-proof) | |
| Anschlussart | 48-pole male multipoint connector, DIN 41612, design F | ||||
| Ambient temperature range | ϑ | °C | 0 … 50 | ||
| Storage temperature range | ϑ | °C | -25 … 85 | ||
| Weight | m | kg | 0.17 | ||
Measuring sockets
| Type / version | VT-VRPA2-1-1X...T1, VT-VRPA2-2-1X...T1 | VT-VRPA2-1-1X...T5, VT-VRPA2-2-1X...T5 | |||
| Command value | "w" | Uw | V | 0 ... ±10 ±2% (Imax = 2 mA) | |
| Ramp time | "t" | Ut | V | 0.02 ... 5 | |
| additional notices | See Function | ||||
| Actual value | "x" | Ux | V | 0 ... 10 ±2% (Imax = 2 mA) | |
| Switchable | "v" | Uv | V | See Operating and display elements | |
Anzeigen
| Type / version | VT-VRPA2-1-1X...T1, VT-VRPA2-2-1X...T1 | VT-VRPA2-1-1X...T5, VT-VRPA2-2-1X...T5 | ||
| LED display | Green 1 | Ready for operation | ||
| Yellow 1 | Enable | |||
| Yellow 2 | Inverter | |||
| Yellow 3 | Ramp on | |||
| Yellow 4 | 4-quadrant operation | |||
Adjustment options
| Type / version | VT-VRPA2-1-1X...T1, VT-VRPA2-2-1X...T1 | VT-VRPA2-1-1X...T5, VT-VRPA2-2-1X...T5 | |||
| Zero point calibration | % | ± 30 | |||
| Command value attenuator | Potentiometer input | % | 0 ... 110 | ||
| Amplitude attenuator 1) | for command value | % | 0 ... 110 | ||
| Ramp time up/down | Ramp 1 | t | s | 0.02 … 5 | |
| Ramp 2 | t | s | 0.2 … 50 | ||
| Step-change height | % | 0 ... 50 | |||
| 1) | Applies to a step level setting of 0% |
Solenoid outputs
| Type / version | VT-VRPA2-1-1X...T1, VT-VRPA2-2-1X...T1 | VT-VRPA2-1-1X...T5, VT-VRPA2-2-1X...T5 | |||
| Solenoid current | max. | Imax | A | 2.5 | |
| Clock frequency | f | Hz | 5 kHz | ||
| Solenoid output | Other properties | Short-circuit-proof, clocked | |||
Analog outputs
| Type / version | VT-VRPA2-1-1X...T1, VT-VRPA2-2-1X...T1 | VT-VRPA2-1-1X...T5, VT-VRPA2-2-1X...T5 | |||
| Internal command value | 0 ... ±10 ±2% (Imax = 2 mA) | ||||
| Actual current value | 0 ... 2.5 ±2% (mV ≙ mA), Imax = 2 mA | ||||
| Measurement signal | 0 ... ±10 ±2% (Imax = 2 mA) | ||||
Analog inputs
| Type / version | VT-VRPA2-1-1X...T1, VT-VRPA2-2-1X...T1 | VT-VRPA2-1-1X...T5, VT-VRPA2-2-1X...T5 | ||||
| Command value | Voltage (differential input) | U | V | 0 ... ±10 | ||
| Voltage (differential input) | Input resistance | R | kΩ | ≥ 50 | ||
| Voltage 1) | Potentiometer input 1-4 | U | V | 0 … ±10 | ||
| Voltage | Input resistance | R | kΩ | > 100 | ||
| Current | I | mA | 4 … 20 | |||
| Current | Input resistance | R | Ω | 100 | ||
| Ramp time | extern 2) | V | 0 … 10 | |||
| extern | Input resistance | R | kΩ | 10 | ||
| 1) | Reference potential is M0 |
| 2) | Internally raised to +15 V, reference is M0 |
Voltage supply
| Type / version | VT-VRPA2-1-1X...T1, VT-VRPA2-2-1X...T1 | VT-VRPA2-1-1X...T5, VT-VRPA2-2-1X...T5 | |||
| Operating voltage | Nominal | U | V | 24 | |
| Lower limit value | UB(t)min | V | 18 | ||
| Upper limit value | UB(t)max | V | 35 | ||
| Power consumption | max. | Smax | VA | 24 | |
| Current consumption | max. | Imax | A | 2 | |
| Fuse | 2 A medium time-lag, exchangeable | ||||
Digital outputs
| Type / version | VT-VRPA2-1-1X...T1, VT-VRPA2-2-1X...T1 | VT-VRPA2-1-1X...T5, VT-VRPA2-2-1X...T5 | |||
| Ready for operation | On (active) 1) | U | V | 16 ... UB | |
| Off (inactive) | U | V | 0 ... 1 | ||
| 1) | Imax = 50 mA, Ri = 10 kΩ |
Digital inputs
| Type / version | VT-VRPA2-1-1X...T1, VT-VRPA2-2-1X...T1 | VT-VRPA2-1-1X...T5, VT-VRPA2-2-1X...T5 | |||
| Command value call-ups | On (active) 1) | U | V | 8.5 ... UB | |
| Off (inactive) | U | V | 0 ... 6.5 | ||
| Enable | On (active) 1) | U | V | 8.5 ... UB | |
| Off (inactive) | U | V | 0 ... 6.5 | ||
| Inverter | On (active) 1) | U | V | 8.5 ... UB | |
| Off (inactive) | U | V | 0 ... 6.5 | ||
| Ramp call-ups | On (active) | U | V | 8.5 ... UB 1) | |
| Off (inactive) | U | V | 0 ... 6.5 | ||
| 4-quadrant operation | On (active) | U | V | 8.5 ... UB 1) | |
| Off (inactive) | U | V | 0 ... 6.5 | ||
| 1) | Re > 100 kΩ |
General
| Type / version | VT-VRPA2-1-1X...T1, VT-VRPA2-2-1X...T1 | VT-VRPA2-1-1X...T5, VT-VRPA2-2-1X...T5 | ||
| Component series | 1X | |||
| Type of electronics | Analog | |||
| Design | Euro-card | |||
(For applications outside these values, please consult us!)
Notice:
For information on the environment simulation testing for the areas EMC (electro-magnetic compatibility), climate and mechanical load, see data sheet 30119-U.
Operating and display elements
For more information, refer to document 30119-B.
| Zw | Zero point setting |
| w1 | Attenuator command value 1 |
| w2 | Attenuator command value 2 |
| w3 | Attenuator command value 3 |
| w4 | Attenuator command value 4 |
| t | Ramp time |
| Gw+ | Amplitude attenuator for positive command values |
| Gw- | Amplitude attenuator for negative command values |
| S+ | Step level for positive direction |
| S- | Step level for negative direction |
| The warranty expires if the sealed potentiometer is adjusted. | |
| Actual value | |
| Command value | |
| Ramp time | |
| Reference potential |
| Ready for operation (green) | |
| Enable (yellow) | |
| -1 | External inverter |
| w1...w4 | Command value call-ups |
Jumper
| Function | Jumper | Factory setting |
| Inverter | ||
| inverting |  | |
| not inverting |  | ● |
| Ramp | ||
| off |  | |
| on |  | ● |
| Ramp time | ||
| 0.2 ... 50 s |  | |
| 0.02 ... 5 s |  | ● |
| Step function | ||
| off |  | ● |
| on |  | |
Measuring socket "v"
| Signal designation | Measuring point selector switch | Measurement signal |
| Internal command value | 0 | ±10 V ≙ ±100 % |
| Command value 1 | 1 | ±10 V ≙ ±100 % |
| Command value 2 | 2 | ±10 V ≙ ±100 % |
| Command value 3 | 3 | ±10 V ≙ ±100 % |
| Command value 4 | 4 | ±10 V ≙ ±100 % |
| Zero point command value | 5 | ±3 V ≙ ±30 % |
| Sum of the command values | 6 | ±10 V ≙ ±100 % |
| Ramp output signal | 7 | ±10 V ≙ ±100 % |
| Zero point actual value | 8 | ±10 V ≙ ±30 % |
| — | 9 | |
| Ramp time 1 | A | 10 mV ... 10 V 1) |
| Ramp time 2 | B | 10 mV ... 10 V 1) |
| Ramp time 3 | C | 10 mV ... 10 V 1) |
| Ramp time 4 | D | 10 mV ... 10 V 1) |
| Ramp time 5 | E | 10 mV ... 10 V 1) |
| Current ramp time (±20 %) | F | 10 mV ... 10 V 1) |
| 1) The assignments between voltage and ramp time specified in the Function section apply. | ||
Potentiometer
| Zero point setting | |
| Attenuator command value 1 | |
| Attenuator command value 2 | |
| Attenuator command value 3 | |
| Attenuator command value 4 | |
| Ramp time 1 | |
| Ramp time 2 | |
| Ramp time 3 | |
| Ramp time 4 | |
| Amplitude attenuator for positive command values | |
| Amplitude attenuator for negative command values | |
| Step level for positive direction | |
| Step level for negative direction | |
| The warranty expires if the sealed potentiometer is adjusted. | |
Measuring sockets
| Actual value | |
| Command value | |
| Switchable measuring points | |
| Reference potential |
LED displays
| Ready for operation (green) | |
| Enable (yellow) | |
| -1 | External inverter |
| 4Q | 4-quadrant operation |
| T | reserved |
| w1...w4 | Command value call-ups |
| t1...t4 | Ramp time call-ups |
Symbols/Circuit diagrams
| Power supply unit | |
| Differential input | |
| Current input | |
| Command value selection logics | |
| Zero point setting | |
| Summing device | |
| Command value inversion | |
| Enable | |
| Ramp generator | |
| Characteristic curve generator | |
| Amplitude limiter | |
| Command value output | |
| Oscillator | |
| Demodulator | |
| Actual value output | |
| Position controller | |
| Power output stage | |
| Fault recognition |
| Power supply unit | |
| Differential input | |
| Current input | |
| Command value selection logics | |
| Zero point setting | |
| Command value summation | |
| Command value inversion | |
| Enable | |
| Ramp generator | |
| Ramp time selection logics | |
| Characteristic curve generator | |
| Amplitude limiter | |
| Command value output | |
| Oscillator | |
| Demodulator | |
| Actual value output | |
| Position controller | |
| Power output stage | |
| Fault recognition | |
| Measuring point switch-over |
Dimensions
Type M-.SMR…
Dimensions in mm
Dimensions in mm
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