VEGA STAB692MD User Manual
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Operating Instructions
VEGASTAB 692 MD
Level and Pressure
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VEGASTAB 692 MD
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910 11
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Ser. No.
12345678
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Safety information, Note Ex area
Safety information
Please read this manual carefully, and also take
note of country-specific installation standards
(e.g. the VDE regulations in Germany) as well
as all prevailing safety regulations and accident prevention rules.
For safety and warranty reasons, any internal
work on the instruments, apart from that involved in normal installation and electrical connection, must be carried out only by qualified
VEGA personnel.
2 VEGASTAB 692 MD
Note Ex area
Please note the attached safety instructions
containing important information on installation
and operation in Ex areas.
These safety instructions are part of the operating instructions and come with the Ex approved instruments.
Contents
Contents
Safety i nformation ........................................................................ 2
Note Ex a rea ................................................................................ 2
1 Product description
1.1 Function and configuration ................................................ 4
1.2 Scope of delivery ............................................................... 4
1.3 Ex area ............................................................................... 4
1.4 Features ............................................................................. 4
1.5 Sensor choice .................................................................... 4
1.6 Technical dat a .................................................................... 5
1.7 Dimensions......................................................................... 6
2 Mounting and installation instructions ................................ 7
3 Electrical connection
3.1 Connection instructions ..................................................... 8
3.2 Connection diagram ........................................................... 9
3.4 Installation examples of HART® sensors ....................... 10
4 Setup
4.1 General information on HART® multidrop ........................... 11
4.2 Procedure......................................................................... 11
4.3 Address assignment with VVO ....................................... 12
5 Diagnosis
5.1 Maintenance ..................................................................... 14
5.2 Fault signal........................................................................ 14
5.3 Failure diagnostics ........................................................... 14
5.4 Repair ............................................................................... 14
VEGASTAB 692 MD 3
1 Product description
Product description
1.1 Function and configuration
VEGASTAB 692 MD is a power supply unit
for connection of up to 15 VEGA sensors
(HART® two-wire sensors in Multidrop mode).
Function
VEGASTAB 692 MD provides a galvanically
separated supply circuit for up to 15 VEGA
sensors (HART® two-wire loop-powered in
Multidrop mode). The power supply for the
sensors is 17 … 25 V DC depending on the
number of connected sensors. VEGASTAB
692 MD delivers up to 60 mA constant current (15 sensors with 4 mA each) and is
open-circuit and short-circuit proof (current
limitation at approx. 200 mA). The instrument
has an RS 232 interface for communication
with the software Visual VEGA (VV) or VEGA
Visual Operating (VVO) via the
VEGACONNECT 3 interface adapter.
Configuration
VEGASTAB 692 MD is a module unit with
plug-in socket suitable for carrier rail mounting EN 50022.
1.2 Scope of delivery
1.3 Ex area
This power supply unit is not approved for
use in Ex areas.
It must neither be installed in hazardous
areas nor be used for power supply of sensors in these areas.
1.4 Features
- Power supply unit for up to 15 HART® sensors (two-wire loop-powered in Multidrop
mode).
- Digital transmission of measured values
(HART® protocol, Multidrop mode).
- Input voltage range 20 … 250 V AC,
20 … 72 V DC.
- Galvanically separated and overload,
short-circuit or open-circuit proof circuit.
- Integrated HART® resistance.
- RS 232 interface via VEGACONNECT 3 for
connection to a modem or PC.
- Communication with Visual VEGA (VV) and
VEGA Visual Operating (VVO).
1.5 Sensor choice
The following VEGA HART® sensors can be
connected to the unit:
- VEGASTAB 692 MD
- Plug-in socket
- Coded pins, bonding jumpers
- VEGACONNECT 3
- Operating instructions VEGASTAB 692 MD
- Operating instructions VEGACONNECT 3
- Operating instructions remote parameter
adjustment
4 VEGASTAB 692 MD
- VEGAPULS series 40 and VEGAPULS
series 50 radar sensors.
- VEGAFLEX series 50 sensors with guided
microwaves.
- VEGASON series 50 ultrasonic sensors
- Series D80 pressure transmitters and
VEGABAR 40
Make sure that only VEGA HART® sensors in
two-wire loop-powered version (in Multidrop
mode) are used.
It is not possible to connect sensors of other
manufacturers.
Product description
1.6 Technical data
Power supply
Operating voltage/Power consumption U
Output or measured data input
Num ber 1 x 24 V output or digital measured data input
Type of measured data input active two-wire input, digital (HART® protocol),
Sensor type up to 15 VEGA two-wire loop-powered HART
Output voltage approx. 17 … 24 V DC
Output constant current max. 60 mA (15 sensors with 4 mA each)
Current limitation at approx. 200 mA, short-circuit proof
Connection cable 2-wire standard cable (screening is
max. cable length 1000 m
max. resistance per wire 15 Ohm
Serial interface (RS 232)
Num ber 1 x RS 232 via VEGACONNECT 3
Function communication via modem or PC for data
max. cable length 15 m
Interfac e paramete rs 9600 baud, no parity, 1 stop bit
Protocol VEGA specific
= 20 … 250 V AC, 50/60 Hz/approx. 12 VA
nom
= 20 … 72 V DC
for up to 15 sensors
sensors are powered by VEGASTAB 692 MD
sensors in Multidrop mode
(pressure transmitters, ultrasonic and radar
sensors, see chapter "1.5 Sensor choice")
recommended)
recording with Visual VEGA (VV) or
sensor adjustment with VEGA Visual Operating
(VVO)
®
Indicating elements
LED in front plate green: power supply and output voltage on
Ambient conditions
Permissible ambient temperature -20°C … +60°C
Storage and transport temperature -40°C … +80°C
Electrical connection
Screw terminals max. 1.5 mm
2
RS 232 interface (VEGACONNECT 3) Sub-D 9-pole
Electrical protective measures
Instrument IP 30
Plug-in socket IP 20
Protection class II
Overvoltage category II
VEGASTAB 692 MD 5
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