Terminal Assignment; Degree Of Protection - Endress+Hauser Proline Promass 84 MODBUS RS485 Operating Instructions Manual

Proline Promass 84 MODBUS RS485
!
Endress+Hauser
4.3.2

Terminal assignment

"
Caution!
Only certain combinations of submodules (see Table) on the I/O board are permissible.
The individual slots are marked and assigned to the following terminals in the connection
compartment of the transmitter:
• Slot "INPUT / OUTPUT 3" = Terminals 22 / 23
• Slot "INPUT / OUTPUT 4" = Terminals 20 / 21
Order version
84***–***********Q
84***-***********7
84***–***********N
Note!
The electrical values of the inputs and outputs can be found in the "Technical data" section.
4.4

Degree of protection

The measuring device fulfill all the requirements for IP 67.
Compliance with the following points is mandatory following installation in the field or servicing,
in order to ensure that IP 67 protection is maintained:
• The housing seals must be clean and undamaged when inserted into their grooves.
The seals must be dried, cleaned or replaced if necessary.
• The threaded fasteners and screw covers must be firmly tightened.
• The cables used for connection must be of the specified outside diameter → ä 98, cable entries.
• The cable entries must be firmly tighten (point a → å 21).
• The cable must loop down in front of the cable entry ("water trap") (point b → å 21).
This arrangement prevents moisture penetrating the entry.
!
Note!
The cable entries may not be point up.
Fig. 21: Installation instructions, cable entries
• Remove all unused cable entries and insert plugs instead.
• Do not remove the grommet from the cable entry.
"
Caution!
Do not loosen the screws of the sensor housing, as otherwise the degree of protection guaranteed
by Endress+Hauser no longer applies.
Terminal No. (inputs/outputs)
20 (+) / 21 (-) 22 (+) / 23 (-)
Submodule on Submodule on
slot No. 4 slot No. 3
– –
Relay output 2 Relay output 1
Current output Frequency output
a
24 (+) / 25 (-) 26 = B (RxD/TxD-P)
Fixed on 27 = A (RxD/TxD-N)
I/O board Fixed on I/O board
Status input MODBUS RS485
Status input MODBUS RS485
Status input MODBUS RS485
b
Wiring
a0001914
27