Endress+Hauser Proline Promag W 400 - Ensuring the Degree of Protection

Proline Promag W 400 Electrical connection
Endress+Hauser 39
OFF
ON
1 2 3
4
Bus polar.
Bus term.
Bus polar.
Not used
390 Ω
DIP 1
5V
26
27
220 Ω
DIP 2
0V
390 Ω
DIP 3
A0023063
 12 Termination using DIP switches on the I/O electronics module (for baud rates < 1.5 MBaud)
Modbus RS485
To avoid incorrect communication transmission caused by impedance mismatch, terminate
the Modbus RS485 cable correctly at the start and end of the bus segment.
OFF
ON
1 2 3
4
Bus polar.
Bus term.
Bus polar.
Not used
390 Ω
DIP 1
5V
26
27
220 Ω
DIP 2
0V
390 Ω
DIP 3
A0023063
 13 Terminating resistor can be enabled via DIP switch on the main electronics module
7.4 Ensuring the degree of protection
7.4.1 Degree of protection IP66/67, Type 4X enclosure
The measuring device fulfills all the requirements for the IP66/67 degree of protection, Type
4X enclosure.
To guarantee IP66/67 degree of protection, Type 4X enclosure, carry out the following steps
after the electrical connection:
1. Check that the housing seals are clean and fitted correctly. Dry, clean or replace the
seals if necessary.