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Description
- The requested product is no longer in our current series product portfolio. Possible product alternative is the VT-HMC (RE30239)
For further information, please contact us.
Features
- Input for digital position measurement systems (2 x SSI or 1 x incremental)
- 6 analog inputs, voltage (±10 V, 0…10 V) and current (4…20 mA) switchable via software, input resistance of AI1 > 10 MΩ
- 3 analog outputs, 1x switchable voltage (±10 V, 0…10 V) or current (0…20 mA, 4…20 mA), 2x voltage (±10 V)
- Various possible signal linking and switch-over options
- Enable input and OK output
- 8 digital inputs
- 7 digital outputs, configurable
- Parameterizable ramp function
- 32 blocks with command values, velocities and controller parameters
- Adjustment to hydraulic drive by means of area adjustment, characteristic curve correction, overlap compensation, residual velocity logic and zero point correction.
- +10 V reference voltage output
- Serial interface RS232
- Up to 32 electronics can be interconnected for parameterization and diagnosis via the local bus
Product description
The VT-HACD-3-2X control electronics are a module for top hat rail mounting.
A microcontroller controls the entire process, makes adjustments, establishes connections and realizes the closed control loops. Data for configuration, command values and parameters are stored in a FLASH in a non-volatile form.
The BODAC PC program is used for the entire configuration and also for the parameterization and diagnosis. Besides the switches for address setting, the module is not equipped with any additional hardware switches. For the configuration, the HACD has to be connected to a PC via a serial interface (RS 232, 1:1 cable).
The configuration and thus the creation of applications are very simple - simply connect the pre-defined functional components. For this purpose, no programming knowledge is necessary.
A mode is available:
- Structural editor
Own motion sequences can be established. For this purpose, 32 blocks are available.
Each block contains: Command value, ramp times, (velocity ±, acceleration ±) and controller parameters.
Blocks are activated by setting trigger conditions: Setting digital inputs, comparing signals with freely definable thresholds or expiry of waiting times.
Signal linking [6] [8] [17]
The HACD has various signal linking options both for the input and the output side, whereas 2 signals each can be linked. These are functions such as addition, subtraction, multiplication, division as well as minimum/maximum value generator, area ration and limiter:
+ = Addition: Z = X + Y
– = Subtraction: Z = X – Y
* = Multiplication: Z = X * Y / 100
/ = Division: Z = X / Y * 100
MIN = Minimum value generator: Z = MIN (X, Y)
MAX = Maximum value generator: Z = MAX (X, Y)
RATIO = Ratio input:
for RATIO >1: Z = X * RATIO – Y
for RATIO <1: Z = X – Y / RATIO
(e.g. area ratio for pressure differential measurement)
LIMIT = Signal limiter: Z = MIN (|X|, |Y|) * sign (X)
JUMP = Jump generator: Z = MAX (|X|, |Y|) * sign (X)
with Z … result
X … 1st signal
Y … 2nd signal
T1 Lag = Low pass filter
Analog I/O [1] [15]
The 6 analog inputs are switchable between ±10 V, 0…10 V, 0…20 mA by means of the software.
The analog output AO1 is switchable between ±10 V, 0…10 V, 0…20 mA and 4…20 mA by means of the software.
AO2 and AO3 are fixedly set to ±10 V.
The output is switched so that the whole range of the analog-digital converter is used.
Both working range and error detection can be defined for all analog inputs.
The analog outputs can be adjusted by means of amplification and offset.
Digital I/O [3] [16]
The HACD has 9 digital inputs and 8 digital outputs.
An input has the fix functionality Enable, a digital output the fixed functionality OK.
Further digital inputs are used for the triggering of blocks (see blocks and triggering).
The function of each digital output can be determined by the selection from a predefined list:
- Command value = actual value
- Actual value higher or lower than the adjustable threshold
- Waiting time completed
- Ramp active
- internal flag set
- Error flag set
- Table completed
- Error status
- Block timeout
- Controller active
- Absolute value (actual value) < window
- Absolute value (command value) < window
- Incremental home position
Digital position measurement system
If VT-HACD-3-2X is used as control electronics, digital position measurement systems of type SSI or incremental can be used for actual value recording.
Limitations of use for the incremental encoder
The maximum frequency of the HACD incremental encoder input (fG) is 250 kHz. The maximum travel velocity of the drive, the resolution (res) of the encoder system used and the possible signal evaluation by EXE (interpolation and digitalizing electronics) determine the frequency.
Determination formulas
Encoder resolution at given maximum velocity:
Velocity at specified encoder resolution:
Controller
If the HACD is used as control electronics, select "Controller" for signal linking [8].
The LCx signals indicate the command value branch, the LFBx signals indicate the actual value branch. [8]
Both SSI encoder or incremental encoder [2] (digital measurement system) and one or more analog sensors can be used as actual value signal.
The controller structure is designed as PIDT1 controller, whereas each share can be activated or deactivated individually. Thus, also a P or PT1 controller can be implemented for example. The I share can additionally be controlled via a window (upper and lower limit).
Control parameters can be set in blocks or independently of blocks.
A state feedback can be used for controller output damping.
Controller structure:
Adjustment to hydraulic system
For the optimum adjustment to the particularities of hydraulic drives, the following functions are implemented upstream the analog output:
- Direction-dependent amplification [10]
For positive and negative values, the amplification can be set separately. In this way, adjustment to the area ratio of a differential cylinder is possible.
- Characteristic curve correction [11]
In this way, the progressive flow characteristics of proportional directional valves are compensated or an inflected characteristic curve is realized.
- Overlap jump/residual velocity [12]
When using valves with positive overlap, a fine positioning can be used in case of a PDT1 controller in order to increase the static accuracy. This fine positioning can be selected according to the residual voltage principle and as overlap jump.
- Zero point correction (offset) [13]
Serves the correction of the zero point of the connected proportional servo valve.
Error detection and treatment
The HACD supports numerous error monitoring possibilities:
- Monitoring of analog inputs for lower deviation or exceeding of the range
- Monitoring the sensor technology for cable break
- Control error monitoring when configuring the HACD as controller
- Monitoring of the supply voltage, any internal
voltage as well as the ±10 V reference voltage
- Monitoring the microcontroller (watchdog) as well as the memory (checksum). The error monitoring as well as its reaction can be configured as well.
[ ] = Assignment to the block diagram
Type code
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | ||||||
| VT-HACD | – | 3 | – | 2X | / | 0 | / | I | – | 00 | – | 000 |
| 01 | Digital control electronics | VT-HACD |
| 02 | Standard | 3 |
| 03 | Component series 20 ... 29 (20 ... 29: unchanged technical data and pin assignment) | 2X |
| 04 | Bus system | |
| without bus | 0 | |
| PROFIBUS DP | P | |
| Ethernet-based: | ||
| PROFINET RT | N | |
| EtherNet/IP | E | |
| Position transducer | ||
| 05 | Incremental/SSI | I |
| 06 | Hardware marking | 00 |
| 07 | Options | 000 |
Technical data
General
| Component series | 2X |
Voltage supply
| Operating voltage 1) | UB | 18 to 30 VDC | |
| Current consumption at 24 VDC | 200 mA (observe additional power for connected sensors/actuators) |
| 1) | If a 24 V encoder supply is implemented directly via the VT-HACD-3-2X (supply voltage is looped in), the encoder specification has to be observed. |
Analog inputs
| Number | 6 | |||
| Voltage inputs | Channel number | max. 6 (selectable via software) | ||
| Input voltage | UE | max. +15 V to -15 V (+10 V to -10 V can be evaluated) | ||
| Input resistance | Re | > 10 MΩ (AI1), 200 kΩ ± 5 % (AI2 to AI6) | ||
| Resolution | 5 mV | |||
| Non-linearity | % | ± 0.25 | ||
| Calibration tolerance | max. 40 mV (with factory settings) | |||
| Current inputs | Channel number | max. 6 (selectable via software) | ||
| Input current | Ie | 0...20 mA | ||
| Leakage current | Iv | 0.1 to 0.4 % | ||
| Resolution | 5 μA | |||
Digital inputs
| Number | 9 | |
| Logic level | log 0 (low) ≤ 5 V; log 1 (high) ≥ 10 V to UB, Ie = 7 mA at UB = 24 V | |
| Connection | flexible conductor up to 1.5 mm2 | |
| Reference potential for all signals | GND |
Analog outputs
| Number | 3 | |||
| AO1 voltage output | Output voltage | U | 0 to 10 V or ±10 V (configurable) | |
| Current, max. | Imax | mA | 10 | |
| Load, min. | RLmin | kΩ | 1 | |
| Resolution | 1.25 mV (14 bit) | |||
| Residual ripple | ±15 mV (without noise) | |||
| AO1 current output | Current | I | 0...20 mA or 4...20 mA (configurable) | |
| Load, max. | Rmax | Ω | 500 | |
| Resolution | 1.25 μ | |||
| Residual ripple | ±15 µA (without noise) | |||
| AO2/AO3 voltage output | Output voltage | U | ±10 V | |
| Current, max. | Imax | mA | 10 | |
| Load, min. | RLmin | kΩ | 1 | |
| Resolution | 1.25 mV (14bit) | |||
| Residual ripple | ±25 mV (without noise) | |||
Digital outputs
| Number | 8 | ||
| Logic level | log 0 (low) ≤ 2 V; log 1 (high) ≤ UB; Imax = 20 mA, maximum load capacity C = 0.047 μF | ||
| Connection | flexible conductor up to 1.5 mm2 | ||
| Reference potential for all signals | GND |
Digital position transducer (encoder)
| Incremental transducer with TTL output | Input voltage | log 0 | 0 to 1 V | ||
| log 1 | 2.8 to 5.5 V | ||||
| Input current | log 0 | -0.8 mA (with 0 V) | |||
| log 1 | 0.8 mA (with 5 V) | ||||
| Frequency, max. related to Ua1 | fmax | kHz | 250 | ||
| SSI transducer 1) | Coding | Gray code / binary code | |||
| Data width | adjustable up to max. 28 bit | ||||
| Line receiver/driver | RS485 | ||||
| Reference potential for all signals | GND | ||||
| 1) | Due to the higher control quality, an SSI transducer with clock synchronization should be used. |
Other characteristics
| Processor | 32 bit power PC | |||
| Reference voltage per axis electronics | Uref | +10 V ±25 mV (20 mA) | ||
| X3C, interface for BODAC | RS 232 | |||
| X7P, interface for bus | PROFIBUS DP (max. 12 MBaud acc. to IEC 61158) | |||
| X7E1(2), interface for Ethernet | PROFINET RT, EtherNet/IP | |||
| Installation | Top hat rail TH 35-7.5 or TH 35-15 according to EN 60715 | |||
| Operating temperature range | ϑ | °C | 0 … +50 | |
| Storage temperature range | ϑ | °C | -20 … +70 | |
| Protection class according to EN 60529:1991 | IP 20 | |||
| Weight | without Ethernet | m | g | 930 |
| with Ethernet | m | g | 1162 | |
| Conformity | see features | |||
(For applications outside these values, please consult us!)
Operating and display elements
Overview of the controller functions
Position controller:
- PDT1 controller
- Linear amplification characteristic curve
- Direction-dependent gain adjustment
- Gain modification via the program possible
- Valve characteristic curve adaptation
- Fine positioning
- Residual voltage principle
- Compensation of zero point errors
- State feedback via
- Pressure,
- Pressure differential
- Position
- Command value feedforward
Pressure / force controller:
- PIDT1 controller
- I share switchable via window
- Pressure differential evaluation
- Command value feedforward
Velocity controller:
- PI controller
- I share switchable via window
Monitoring functions:
- Dynamic following error monitoring
- Cable break monitoring for incremental and SSI encoder
- Cable break monitoring for sensors
- Cable break monitoring for analog signals
Electrical connection
Block diagram: Structural editor
| 1 | Analog voltage or current inputs |
| 1a | High-impedance input AI1 |
| 2 | SSI or incremental |
| 3 | Enable input and digital inputs |
| 4 | Analog input adjustment |
| 5 | Switching matrix |
| 6 | Math. connection of inputs |
| 7 | 32 blocks for command value generation, controller parameter switching |
| 8 | Math. connection and/or controller |
| 9 | Substitutional control |
| 10 | Direction-dependent amplification |
| 11 | Characteristic curve adjustment |
| 12 | Residual velocity and overlap jump |
| 13 | Offset |
| 14 | Limitation |
| 15 | Analog voltage or current outputs |
| 16 | OK output and digital outputs |
| 17 | Math. connection of outputs |
Example: VT-HACD-3-2X/… with one hydraulic cylinder axis
| 1 | Differential cylinder |
| 2 | integrated position measurement system |
| 3 | Proportional servo valve with integrated control electronics |
| 4 | VT-HACD-3-2X |
| 5 | Connection cable |
| 6 | Pressure transducer |
| 7 | Sandwich plate shut-off valve (with connector switching amplifier) |
Pin assignment
Pin assignment
| X3C | RS232 |
| Pin | |
| 1 | LCAN_H |
| 2 | TxD |
| 3 | RxD |
| 4 | reserved |
| 5 | GND |
| 6 | reserved |
| 7 | reserved |
| 8 | reserved |
| 9 | LCAN_L |
| X1S | Power |
| Pin | |
| 1 | GND |
| 2 | GND |
| 3 | 18 – 30 V |
| X7P | PROFIBUS DP |
| Pin | |
| 1 | reserved |
| 2 | reserved |
| 3 | RxD/TxD-P |
| 4 | CNTR-P |
| 5 | DGND |
| 6 | VP |
| 7 | reserved |
| 8 | RxD/TxD-N |
| 9 | reserved |
| X7E1, X7E2 | |
| Ethernet ports | |
| X2M1 | Encoder/DIO (Digital) |
| 1clk+ | 2clk+ |
| 1clk- | 2clk- |
| 1D/A+ | 2D/B+ |
| 1D/A- | 2D/B- |
| Z+ | Z- |
| 24V | 24V |
| GND | GND |
| DI1 | DO1 |
| DI2 | DO2 |
| DI3 | DO3 |
| DI4 | DO4 |
| DI5 | DO5 |
| DI6 | DO6 |
| DI7 | DO7 |
| DI8 | ok |
| X2A1 | AIO (Analog) |
| ref | enable |
| AI1+ | AI1- |
| AI2+ | AI2- |
| AI3+ | AI3- |
| AI4+ | AI4- |
| AI5+ | AI5- |
| AI6+ | AI6- |
| AO1 | AO2 |
| AO3 | AGND |
Notes:
The pins marked with "reserved" are reserved and must not be connected!
PROFIBUS DP (port X7P/D) is not available with the Ethernet version.
Fields of application
Areas of application
- Machine tools
- Plastics processing machines
- Special machinery
- Presses
- Transfer systems
Technology functions
- Sequence parameterization
- Positioning
- Pressure control
- Force control
- Tables
Hydraulic axes
- Measurement system:
- incremental or absolute (SSI, gray, binary)
- analog 0 to ±10 V and 0(4) to 20 mA
- Actuating variable output voltage or current
- Freely configurable controller variants
- Position/pressure/force/velocity controller
- alternating control (position/pressure)
Programming
- User programming with PC
Operation
- comfortable management of the machine and measured data on the PC
Process connection
- Digital inputs and outputs,
- Analog inputs and outputs,
- PROFIBUS DP for the communication with a superior control system
- EtherNet/IP
- PROFINET RT
Installation
- Top hat rail 35 mm
CE conformity
- EMC Directive 2004/108/EC
- Applied harmonized standards:
- EN 61000-6-2:2005
- EN 61000-6-3:2007
Further information
www.boschrexroth.com/hacd
Dimensions
VT-HACD-3-2X/ (without Ethernet)
Dimensions in mm
| 1 | Installation on top hat rail TH 35-7.5 or TH 35-15 according to EN 60715 |
VT-HACD-3-2X/ (with Ethernet)
Dimensions in mm
| 1 | Installation on top hat rail TH 35-7.5 or TH 35-15 according to EN 60715 |
Project planning information
Software project planning
Project planning
The creation of a parameter file forms the basis for the function of the HACD. The parameter file contains the block structure of the HACD in which the links of the variables will be created. The parameter files are created in BODAC. The parameter file can be created offline and transferred to the HACD by means of a PC.
Proceed as follows for this software project planning:
1. Selection of the HACD.
2. Application is defined by means of the block structure.
3. Setting of the parameter values (sensor technology, controllers...).
4. The data is sent to the HACD.
5. Storage of the data in the flash.
6. The setting and the machine sequence are optimized at the machine.
PC program BODAC
To implement the project planning tasks, the BODAC PC program is available to the user. It can be used for the programming, setting and diagnosis of the HACD.
Scope of services:
- Convenient dialog functions for the online or offline setting of the machine data
- Dialog window for the online setting of the parameter values
- Comprehensive options for displaying process variables, digital inputs, outputs, and flags
- Recording and graphical representation of up to eight process variables with great selection of trigger options
PC system requirements:
- Windows XP, Windows Vista, Windows 7, Windows 10
- RAM (recommendation: 256 MB)
- 250 MB of available hard disk capacity
Notice:
The BODAC PC program is not included in the scope of delivery.
It is available for free download!
Download on the Internet: www.boschrexroth.com/hacd
Enquiries: support.hacd@boschrexroth.de
Project planning / maintenance instructions / additional information
Product documentation for VT-HACD-3-2X
- Data sheet 30543
- Operating instructions 30543-B
- Environmental compatibility statement 30543-U
- BODAC software description 30543-01-B
- Commissioning instructions PROFIBUS interface 30543-01-Z
- Commissioning instructions EtherNET/IP interface 30543-04-Z
- Commissioning instructions PROFINET RT interface 30543-05-Z
- General information on the maintenance and commissioning of hydraulic components 07800/07900
Commissioning software and documentation on the Internet: www.boschrexroth.com/HACD
Maintenance instructions:
- The devices have been tested in the plant and are supplied with default settings.
- Only complete devices can be repaired. Repaired devices are returned with default settings. User-specific settings are not accepted. The machine end-user must transfer all appropriate user parameters and programs again.
Notes:
- Electrical signals provided via control electronics (e.g. "No error" signal) must not be used for switching safety-relevant machine functions! (See also the European standard "Safety requirements for fluid power systems and their components - Hydraulics", EN 982.)
- If electro-magnetic interference is to be anticipated, suitable measures must be taken to ensure the function (depending on the application, e.g. shielding, filtration)!
- For additional information, see BODAC software description 30543-01-B and operating instructions 30543-B
- The upper and lower ventilation slots must not be concealed by adjacent devices in order to provide for sufficient cooling.
Ordering codes
Included in the scope of delivery:
Mating connector for
- Port X1S (Phoenix Mini Combicon, 3-pole)
- Port X2A1 (Weidmüller B2L 3.5/18 LH SN SW)
- Port X2M1 (Weidmüller B2L 3.5/30 LH SN SW)
- Description A-Z
- Description Z-A
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