Description
The WB-TVM is typically as a voltage monitor for contact line voltage DC traction systems and for data acquisition to ssensitive point of the infrastructure used.
This is necessary, for example, if measurements have to be carried out before connecting the different parts of the S-Bahn or U-Bahn.
An electrical connection of the sections may only be made if all voltage values are within a certain window.
Another area of application is the display of high voltages in safety areas, e.g. a power rail in the subway area.
Function
The WB TVM
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can be used as an independent component or in combination with other WB components,
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enables a reliable evaluation of the driving voltage t,
due to a special evaluation
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requires no supply voltage up to 1000 V,
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offers high flexibility in evaluation,
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can store peak values locally and
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automatically activates the measurement.
The WB-TVM evaluates the measurement voltage when the minimum measurement voltage VDC is applied.
The specific firmware enables the WB-TVM to filter the driving voltage so that an exact evaluation is possible.
Depending on the stored threshold values or optional functions, the measured values are evaluated and the outputs are sounded.
In combination with the components WB-BUS, WB-HS, the WB-TVM can also exchange the circuits, the ACTUAL values and target values with a SCADA system.
Technical Data
Operation without auxiliary voltage
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Min. Measuring Voltage VD
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Rating VDC
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Voltage proof VDC
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10
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110
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1000
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80
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400
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1000
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220
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750
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1800
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220
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1500
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2000
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220
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3000
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6000
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Standard WB VDC
Input channels analog
The nominal voltages are based on der tTypical energy supply of direct current railways.
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Without auxiliary voltage
Measuring range
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40- 300VDC
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200 – 750VDC
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200- 1500VDC
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200 – 3000VDC
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With auxiliary voltage
Measuring range
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0 – 345VDC
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0-860VDC
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0-1725VDC
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0-3450VDC
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max. Rated voltage VDC
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300
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750
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1500
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3000
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Voltage strength VDC
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750 / 10sek
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2000 / 10sec
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3600 / 10sec
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6600 / 10sek
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VDC test voltages
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1.5 kV
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6 kV
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9 kV
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12 kV
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Measurement accuracy
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see measurement channel variants
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We provide two variants of measurement channels
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Product type
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withe line
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silver line
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Measuring channels
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2
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Sampling Rate
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up to 15kHz
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up to 25kHz
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Resolution
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up to 8 bits
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up to 16 bit
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Measurement accuracy
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5% of max. value
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0.5% of max. value
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Output channels Digital
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number
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2
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Technology
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Relay with 2 separate changers (NC/NO)
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switching voltage
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max. 250V
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switching current
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max. 8A
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switching capacity
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max. 2000WAC / 60W
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Dielectric strength coil – contact
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max. 4kVAC
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Switching cycles at Imax
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> 1,000,000
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Disconnect Voltage
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2000 VAAC / 60 VADC
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Show
Possible variants depending on the range of functions or options
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LED
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LED Color
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Caption
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Function
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1
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green
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run
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operability permanently ON
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2
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blue
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Enable
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Approval granted by higher authority
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3
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green
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ON/ OFF
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Sonicated On / OFF
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4
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red
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Error
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Functional malfunction of the system or sensors or equipment
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Operation
Im standardssystem is no control element vintended.
Extensions
Functional extension
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Max. DC voltage threshold
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Display threshold exceeded
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Max. AC voltage threshold
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Display threshold exceeded
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Min. DC voltage threshold
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Displayed below threshold
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times event pending
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Time(s) for how long a threshold must be present in order to be displayed
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Monitored auxiliary voltage for external sensors
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The sensors are connected to the device and supplied via it. The power consumption is monitored and conclusions are drawn about the functionality of the sensor.
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Number and time of voltage overshoot and undershoot
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Example: Only if an impulse of > 0.2 ms has occurred, this is counted and after 4 times a signal is sent
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Any signal delay
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higher-level systems only signal messages when an ACTUAL value is below or exceeded
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Any signal pause / min. signal length
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Ensuring transmission to third-party systems
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Secure blocking of external switching commands
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To ensure unintentional switching, e.g. Canat the firmware level, the bidirectional communication can not only be deactivated but blocked by the compilation,
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Service
The following functions can be offered as an option. These may also require WBex components
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Test button
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This optional button can be used to manually activate messages or applications
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Reset measured value
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Using this option, max. or min. measured values can be saved 1)
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Release contact
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The release signal is required if the WB component works autonomously and is to be activated or deactivated by a simple signal
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LCD display
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ACTUAL value DC
ACTUAL value AC
Max value DC (since last reset)
Max value AC (since last reset)
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Parameterization
For security reasons, there was no on-site configuration option.
The thresholds can be set at the factory.
If you need several udifferent threshold values in your systems, you can use our service case CM1010 / VLD1010 . With the servicekoffer, different parameter sets as well as Softwareupdates are stored and imported by an adapter.
Parameterization via SCADA Systems is possible if the system is connected to a WB-MC or WB-HS .
Input signals
The functionality of the basic components can be extended by an internal extension OR by another WB component or WBex extension become.
Output signals
The functionality of the basic components can be extended by an internal extension OR by another WB component.
Scope of delivery
The following items are included in the scope of delivery:
- Instruction manual
- Installation instructions
- Unit of measurement
- Packaging
- Test report
