VEGA STAB690 User Manual
Operating Instructions
VEGASTAB 690
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Level and Pressure
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VEGASTAB 690
56 78
9 1011121314
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Contents
Safety information ........................................................................ 2
Note Ex area ................................................................................ 2
1 Product description
1.1 Function and configuration .................................................. 3
1.2 Types and versions ............................................................. 3
1.3 Technical data ....................................................................... 4
1.4 Dimensions ........................................................................... 5
2 Mounting and installation instructions ................................ 6
3 Electrical connection
3.1 Connection instructions ....................................................... 7
3.2 Connection instructions for approved applications .......... 7
3.3 Connection plan ................................................................... 7
3.4 Connection examples .......................................................... 8
4 Setup
4.1 Indicating and adjustment elements .................................. 9
4.2 Setup sequence ................................................................... 9
Contents
5 Diagnostics
5.1 Maintenance ....................................................................... 10
5.2 Repair.................................................................................. 10
5.3 Checking the measuring cable ......................................... 10
Safety information
Please read this manual carefully, and also take
note of country-specific installation standards
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 690
Note Ex area
Please note the attached approval documents
(yellow binder) and especially the included
safety data sheet.
Product description
1 Product description
1.1 Function and configuration
VEGASTAB 690 power supply unit is a module instrument with plug-in socket, suitable for
carrier rail mounting DIN 46 277.
Function
The power supply unit provides two galvanically separated supply circuits. Both circuits
are shortcircuit proof (current limitation
approx. 26 mA) and are equipped with interlock diodes for control.
Configuration
VEGASTAB 690 power supply unit can power
- hydrostatic pressure transmitters
- process pressure transmitters or
- differential pressure transmitters
and ensures the configuration of a complete
measuring system per circuit in conjunction
with one of these sensors.
12 43
+
–
2
1
on
VEGASTAB 690
56 78
91011121314
1.2 Types and versions
Standard application
A power supply unit powers max. two sensors. Both, i.e. power supply unit and sensor
form one measuring system.
e.g.
DCS
Standard application
Application in Ex area
A power supply unit powers via max. two ia
safety barriers type 145 two sensors in Ex
area. Together they form one measuring
system.
Ex area
Non-Ex area
p
p
p
Safety barrier
type 145
VEGASTAB …
e.g.
DCS
Ex application
VEGASTAB 690 3
1.3 Technical data
Power supply
Operating voltage 20 … 250 V AC, 50/60 Hz
Power consumption max. 3 W (3 … 16 VA)
Fuse
- supply range T 1 A, 250 V
20 … 72 V DC
with backup power supply curve form
deviating considerably from mains sine:
U
= 125 V AC (rectangle)
max.
Product description
Electrical connection
Screw terminal max. 1.5 mm
2
Electrical protective measures
Protection
- instrument IP 30
- plug-in socket IP 20
Protection class II
Overvoltage category II
Ambient conditions
Permissible ambient temperature -20°C … +60°C
Storage and transport temperature -40°C … +70°C
Output
Output voltage 2 x 24 V DC floating
Current limitation approx. 26 mA (shortcircuit proof)
Load
- non-Ex circuit max. 500 Ohm
- intrinsically safe circuit max. 75 Ohm
(in conjunction with safety barrier type 145)
Interlock diode for output 1 and 2
max. instrument load 15 Ohm
Indicating elements
LED in front plate green on: operating voltage on
Electrical separation measures
Reliable separation acc. to
VDE 0106, part 1 between power supply output 1 and output 2
- reference voltage 250 V
- isolation resistance 3 kV
CE conformity
VEGASTAB 690 power supply unit meets the protective regulations of EMC (89/336/EWG)
and NSR (73/23/EWG). Conformity has been judged acc. to the following standards:
EMC Emission EN 50 081 - 1
Susceptibility EN 50 082 - 2
NSR EN 61 010
4 VEGASTAB 690
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