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2. "Power" - for connection of external power supply 12V. Internal input "+".
3. "TR" - is the the nearest switch to CAN inputs. This switch should be turned "ON" on the last sensor in the CAN chain. The last sensor in long-chain with a length of more then than 10 meters, terminator should be in "OFF" position.
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Do not use DIP switch "FR" labled labeled "1", it should always be OFF. If this switched is turned ON, the module will turn off. This switch is only needed for programming purposes |
4. "CAN1 CAN2" - two equivalent digital connectors RJ12 for the connection to the master module, CAN sensors, or CAN extensions on a CAN bus, with auto-sensing.
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Up to date parameters can be found on our official website at: VT408 / Sensor extension unit
| 1 | Product dimensions | Size W 109 x H 40 x D 68 mm |
| 2 | Packaging weight | 0.5 kg |
| 3 | Power input | 12V DC, 05A |
| 4 | Operating temperature | Temperature: Min. -10° C - Max.+80° C |
| 5 | Mounting possibilities | VT123 / Wall mount brackets (ordered separately)VT124 / Din rail holder (ordered separately)VT125 / 19” Mounting kit for x3 units (ordered separately) |
| 6 | Max. distance from the unit | Max. bus length: 225m,Max. length of analog sensor cables: 50-150m (depends on sensor type) |
| 7 | Manufactured in (country) | Manufactured in Slovak Republic, E.U. |
| 8 | HS Code | 8471 50 000 |
| 9 | Package includes | Cable BH2-16M to BH2-16M Screws 2pcs M3x5 |
| 10 | Brackets (accessories) | VT123 / Wall mount brackets (ordered separately)VT124 / Din rail holder (ordered separately)VT125 / 19” Mounting kit for x3 units (ordered separately) |
| 11 | Inputs terminals | Analog sensor ports: x8 ports RJ-12 ports: x2 |
| 12 | Extension protocols | CAN |
| 13 | Network Interface | CAN open |
| 14 | Status Indicators | LED indication for CAN bus connection LED indication for Power / Network connectivity Red / Green Led |
Inventory
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VT408 module is developed to expand the number of analog sensors connected to the monitoring system. Picture The picture below illustrates the expansion example:
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Connect CAN input of the unit by RJ11/RJ12 cable supplied to the CAN input of previous CAN unit or monitoring system. The red LED lights up. Match the TR bus terminators on the attached CAN units. CAN bus terminators TR (position 2 in VT450) should be in the ON state only at the end CAN units port and in Off states (1,2) for all intermediate units. One CAN bus can have not more than 8 CAN units, sensors, and/or another CAN devicesdevice.
Normally 12V 0.5A external power supply is connected to the jack labeled PWR (point 2 in the general scheme). But if the only VT408 unit is connected and the length of the cable from the monitoring unit to the VT408 does not exceed 10m allowed the extension unit operation without any external power supply. In all other cases, the use of an external power supply is desirable.
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Click "Configure" and wait. The system starts the CAN bus line survey, display displays the list of connected CAN units and sensors. On the CAN devices, the green LEDs lights light up.
If you will go now to the "System tree", there you will see there new CAN devices and/or new CAN sensors. Wait for a little or renew the tree.
If the survey is reset after click "Configure", it means that the line is not connected (bad cable and/or bad connectors) or not matched terminators on the bus. It is necessary to check and change the status of the line or the TR terminations.
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