Connecting the sensors, actuators and power supply
- All wiring work must be performed in the de-energised state.
- Ensure installation is completed correctly.
- Comply with existing legal and/or operational directives.
- Improper handling can cause injuries and/or damage to the instruments!
- Run all data and power cables so that they do not pose a trip hazard and ensure that cables do not have any sharp bends!
- Data and current cables must not exceed a length of 30m!
- The 4-Channel Data Logger must not be operated in the field with the lid open!
- The 4-Channel Data Logger cannot be operated without a power supply unit.
- To ensure the housing is properly sealed, each of the 2 cable screw connections must only hold a single cable.
Connection of the sensors and power supply (view without power supply unit)
| 1 | Mini-B USB (only for debug) | 3 | Main terminal block (split into 2x 2pol., 2x 3pol., 1x 6pol.) |
| 2 | Extension interface | 4 | Cable gland (cable diameter of 5-10 mm) |
| V IN | External supply or charging voltage | |
| GND | Ground (external supply or charging voltage) | |
| NO | Isolated switch contact | |
| CC | ||
| VEXT | Switchable sensor supply (3,3 V ) | |
| GND | Ground | |
| UI 1 | Universal input 1 | |
| UI 2 | Universal input 2 | |
| UI3/A+ | Universal input 3 | |
| UI 4/B- | Universal input 4 | |
| GND | Ground | |
| VOUT | switchable sensor supply (14,7 V bzw. 23,4 V ) | |
| GND | Ground | |
| RTD+ |
|
Clamps for the external temperature sensor (two or three wires) |
| RTD- | ||
| TCOM | ||
The following table contains the conditions to be observed when connecting cables to the terminals of the 4-Channel Data Logger :
| Nominal cross-section | 1,5 mm² |
| Cross-section for solid wire | 0,14...1,5 mm² |
| Cross-section for stranded wire | 0,14...1,5 mm² |
| Length to be stripped | 9 mm |
| Torque | 0,22...0,25 Nm |
- Remove the four screws that secure the housing cover. Now open the 4-Channel
Data Logger .
Important: In the event of adverse weather conditions including rain or in a location where water can penetrate from above, suitable measures must be implemented to protect the device from penetrating moisture when the housing cover is open.
- Remove the power supply unit from the 4-Channel Data Logger . Use the strap provided to remove the power supply unit.
- Then connect your sensors and actuators with the universal inputs and the
outputs. Ensure that no
current is present when establishing the connection. If you would like to use an external
supply or charging voltage, you should connect the corresponding cables with the V IN and
GND terminals in the de-energised state.
Important: Only a single cable must be threaded through the cable screw connections to ensure the seal of the housing is not jeopardised.
- Tighten the cable screw connections to secure the cables.
- Affix blind plugs to all of the cable screw connections that are not required.
Important: All unused cable screw connections on the 4-Channel Data Logger must be sealed watertightly using the blind plugs supplied. Otherwise the degree of protection for the entire device is not guaranteed and the manufacturer's warranty is void.
- Connect the antenna (see Connecting the mobile network antenna). The antenna is not included in the scope of delivery and must be ordered separately.
- Insert the power supply unit.
- Check whether the connection to the myDatanet has worked correctly (see Testing communication with the device).
- Close the housing cover. The best option is to tighten the four screws crosswise
(torque 0,5 Nm; At the first screw 0,7 Nm because the threads have to be shaped into the base part first.) so
that the housing cover is positioned evenly.
Important: Ensure that the seals are clean and intact before closing the housing cover. Remove any impurities and/or dirt. The manufacturer shall not be liable for any damage to the device caused by leaky or faulty seals.
Closing the housing cover
1 4-Channel Data Logger base unit 3 Housing cover 2 Delta PT M3,5x25 Torx 15 - Check that the housing cover is positioned correctly on all sides and that no foreign
materials have been trapped between the housing and housing cover.
Important: The manufacturer is not liable for any damage that is caused by housing covers that are not closed correctly.
- Now switch on the external supply or charging voltage.
Tip: If you are using a power supply unit without an integrated energy store, the external supply or charging voltage must be switched on before the optional step during which the connection to the server is tested.
