Connecting The Device - Siemens SITRANS LH300 Kompaktbetriebsanleitung

WARNING
Improper laying of shielded cables
Risk of explosion through compensating currents between hazardous area and the non-hazardous area.
Shielded cables that cross into hazardous areas should be grounded only at one end.
•
If grounding is required at both ends, use an equipotential bonding conductor.
•
WARNING
Connecting device in energized state
Risk of explosion in hazardous areas.
Connect devices in hazardous areas only in a de-energized state.
•
Exceptions:
Devices having the type of protection "Intrinsic safety Ex i" may also be connected in energized state in hazardous
•
areas.
Exceptions for type of protection "Non-sparking nA" (Zone 2) are regulated in the relevant certificate.
•
Note
Electromagnetic compatibility (EMC)
You can use this device in industrial environments, households and small businesses.
For metal housings there is an increased electromagnetic compatibility compared to high-frequency radiation. This
protection can be increased by grounding the housing, see Connecting (Page 11).
Note
Improvement of interference immunity
Lay signal cables separately to cables with voltages > 60 V.
•
Use cable with twisted wires.
•
Keep the device and the cables at a distance from strong electromagnetic fields.
•
5.2

Connecting the device

Procedure
Connect the pressure transmitter to the cable box as follows:
1. Connect the cable of the pressure transmitter to the terminals 1 (-), 2 (+) and the grounding.
2. Insert the vent pipe into the cable box.
The vent pipe must be open to the atmosphere. The watertight filter present on the cable box housing serves for this
purpose.
①
Brown
②
Black
Figure 5-1 Electrical connection
Example
In the case of applications in non-hazardous areas, you can connect the pressure transmitter as follows:
12
③
Blue
④
Protective conductor connection/equipotential bonding
SITRANS LH300 (7MF1575..) Transmitter for hydrostatic level
A5E37897183-AA, 09/2016