Operating Instructions

Table Of Contents
Connecting
5
5.1 Basic safety information
WARNING
Missing PE/ground connection
Risk of electric shock.
Depending on the device version, connect the power supply as follows:
Power plug: Ensure that the used socket has a PE/ground conductor connection. Check
that the PE/ground conductor connection of the socket and power plug match each other.
Connecting terminals: Connect the terminals according to the terminal connection
diagram. First connect the PE/ground conductor.
5.2 Connecting SITRANS LR250
WARNING
Incorrect connection to power source
Risk to personnel, system and environment can result from improper power connection.
The DC input terminals shall be supplied from a source providing electrical isolation
between the input and output, in order to meet the applicable safety requirements of
IEC 61010-1. For example, Class 2 or Limited Energy Source.
All field wiring must have insulation suitable for rated voltages.
WARNING
Loss of protection
Loss of approvals can result from improper connection.
Check the nameplate on your device, to verify the approval rating.
Use appropriate cable entry seals to maintain IP or NEMA rating.
See Wiring setups for hazardous area installations (Page 39).
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG 37