Electrical connection
Proline Promass E 300 Modbus RS485
42
Hauser
Software addressing
‣
To switch addressing from hardware addressing to software addressing: set the DIP
switch to
Off
.
The device address configured in the
Device address
parameter takes effect after
10 seconds.
7.5.2
Enabling the terminating resistor
To avoid incorrect communication transmission caused by impedance mismatch, terminate
the Modbus RS485 cable correctly at the start and end of the bus segment.
‣
On
Off
2
1
4
3
A0029632
Switch DIP switch No. 3 to
On
.
7.6
Ensuring the degree of protection
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.
2. Dry, clean or replace the seals if necessary.
3. Tighten all housing screws and screw covers.
4. Firmly tighten the cable glands.
5. To ensure that moisture does not enter the cable entry:
Route the cable so that it loops down before the cable entry ("water trap").
A0029278
6. Insert dummy plugs into unused cable entries.
7.7
Post-connection check
Are cables or the device undamaged (visual inspection)?
Do the cables used meet the requirements?
Do the cables have adequate strain relief?
