VEGA TRENN544Ex User Manual
Operating Instruction
VEGATRENN 544 Ex
Level and Pressure
!
on
VEGATRENN
CONNECT
544 Ex
out
in
Contents
Safety information ........................................................................................ 2
1 Product description
1.1 Function and configuration ................................................................. 3
1.2 Application .......................................................................................... 4
1.3 Approval ............................................................................................. 4
1.4 Technical data ..................................................................................... 5
1.5 Dimensions ......................................................................................... 7
2 Mounting
2.1 Mounting versions............................................................................... 8
2.2 Instrument address ............................................................................. 9
3 Electrical connection ......................................................................... 10
4 Set-up
4.1 Indicating and operating elements ................................................... 10
4.2 Adjustment via PC ............................................................................ 11
4.3 Set-up sequence .............................................................................. 11
Contents
5 Diagnosis
5.1 Maintenance ..................................................................................... 11
5.2 Repair ............................................................................................... 11
5.3 Fault signal........................................................................................ 11
Safety information
The described module must only be inserted and operated as described in this operating instruction. Please
note that other action can cause damage for which VEGA
does not take responsibility.
2 VEGATRENN 544 Ex
Product description
1 Product description
1.1 Function and configuration
VEGATRENN 544 Ex Ex-separator powers via an
intrinsically safe circuit the respectively connected
sensor and processes in addition the measured data
of the sensor.
Function
The measured data of 4 ... 20 mA directly adjusted on
the sensor are processed in VEGATRENN 544 Ex into
a current and volt output as well as in a digital signal
output (DISBUS).
VEGATRENN 544 Ex is equipped with sockets for
connection of a VEGACONNECT connection cable. A
communication to a PC can be provided via
VEGACONNECT.
If necessary this combination enables in a very simple
way a parameter adjustment of the processing or
outputs or editing of linearization curves.
Configuration
VEGATRENN 544 Ex is mechanically designed in 19"technology (width 5 TE = 24,5 mm).
Electronically the instrument is microcomputer controlled and consists function technically out of software
components, see following sketch.
Sketch
Function component
- Measuring point MST
- 4 … 20 mA
neutral parameter
- Sensor
Input component
- Sensor 4 … 20 mA
FB
1
EB
1
VEGATRENN 544 Ex 3
AB
mA
V
AB
AB
PC
DIS
Output component
Current output 0 … 20 mA
Volt output 0 … 10 V
Fail safe relay
Digital output
- PC-/DCS-output
- DISBUS-output
A
A
A
1.2 Application
Application: Level
Sensor: Range 4 … 20 mA
Hydrostatic pressure transmitter
Process pressure transmitter
Differential pressure transmitter
Parameter: MST1 4 … 20 mA neutral parameter
Exemplary application
Product description
Fig. 1.1 Level measurement
Ex-area
Ex-Sensor
4 … 20 mA
Not-Ex-area
intrinsically safe
circuit
VEGATRENN 544 Ex
Measuring point MST processing
- Current output
- Volt output
- DISBUS
- Fail safe relay
Parameter
- 4 … 20 mA neutral parameter
1.3 Approval
Ex-approval
For hazardous areas, certification to CENELEC defined in conformity certificate PTB-no. Ex-95.D.2145 X.
4 VEGATRENN 544 Ex
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