KROHNE SU 600 User manual

Operating Instructions
SU 600
4…20 mAsignal conditioning
instrument

Contents
1About this document
1.1Function ......................... 4
1.2Target group ...................... 4
1.3Symbolism used.................... 4
2For your safety
2.1Authorised personnel ................ 6
2.2Appropriate use .................... 6
2.3Warning about misuse ............... 6
2.4General safety instructions ............ 6
2.5CE conformity ..................... 6
3Product description
3.1Configuration ...................... 8
3.2Principle of operation ................ 9
3.3Adjustment........................ 9
3.4Storage and transport ................ 9
4Mounting
4.1General instructions ................. 11
4.2Mounting information ................ 11
5Connecting to power supply
5.1Preparing the connection ............. 14
5.2Connection procedure ............... 15
5.3Wiring plan ....................... 16
6Setup with the integrated indicating and
adjustment unit
6.1Adjustment system .................. 18
6.2Setup procedure ................... 19
6.3Application example ................. 24
7Maintenance and fault rectification
7.1Maintenance ...................... 27
7.2Fault rectification ................... 27
2SU 600 -4…20 mAsignal conditioning
Contents
30652-EN-050525

7.3Instrument repair ................... 28
8Dismounting
8.1Dismounting procedure............... 29
8.2Disposal ......................... 29
9Supplement
9.1Technical data ..................... 30
9.2Dimensions ....................... 33
9.3Certificate ........................ 34
SU 600 -4…20 mAsignal conditioning 3
Contents
30652-EN-050525

1About this document
1.1Function
This operating instructions manual has all the informa-
tion you need for quick setup and safe operation of SU
600.Please read this manual before you start setup.
1.2Target group
This operating instructions manual is directed to trained
personnel.The contents of this manual should be made
available to these personnel and put into practice by
them.
1.3Symbolism used
Information,tip,note
This symbol indicates helpful additional information.
Caution,warning,danger
This symbol informs you of a dangerous situation that
could occur.Ignoring this cautionary note can impair the
person and/or the instrument.
Ex applications
This symbol indicates special instructions for Exap-
plications.
lList
The dot set in front indicates a list with no implied
sequence.
àAction
This arrow indicates a single action.
4SU 600 -4…20 mAsignal conditioning
About this document
30652-EN-050525

1Sequence
Numbers set in front indicate successive steps in a
procedure.
SU 600 -4…20 mAsignal conditioning 5
About this document
30652-EN-050525

2For your safety
2.1Authorised personnel
All operations described in this operating instructions
manual must be carried out only by trained specialist
personnel authorised by the operator.For safety and
warranty reasons,any internal work on the instruments
must be carried out only by personnel authorised by the
manufacturer.
2.2Appropriate use
SU 600 is a universal signal conditioning instrument and
power supply unit for connection of a 4…20 mA/HART
sensor.
2.3Warning about misuse
Inappropriate or incorrect use of the instrument can give
rise to application-specific hazards,e.g.vessel overfill or
damage to system components through incorrect
mounting or adjustment.
2.4General safety instructions
SU 600 is a high-tech instrument requiring the strict
observance of standard regulations and guidelines.The
user must take note of the safety instructions in this
operating instructions manual,the country-specific
installation standards (e.g.the VDE regulations in
Germany)as well as all prevailing safety regulations and
accident prevention rules.
2.5CE conformity
SU 600 is in CE conformity with EMC (89/336/EWG)and
NSR (73/23/EWG).
6SU 600 -4…20 mAsignal conditioning
For your safety
30652-EN-050525

Conformity has been judged acc.to the following
standards:
lEMC:
-Emission EN 61326:1997 (class A)
-Susceptibility EN 61326:1997/A1:1998
lNSR:EN 61010-1:2001
SU 600 is designed for use in an industrial environment.
Nevertheless,electromagnetic interference from elect-
rical conductors and radiated emissions must be taken
into account,as is usual with a class Ainstrument acc.to
EN 61326.IfSU 600 is used in a different environment,
the electromagnetic compatibility to other instruments
must be ensured by suitable measures.
SU 600 -4…20 mAsignal conditioning 7
For your safety
30652-EN-050525

3Product description
3.1Configuration
The scope of delivery encompasses:
lIndicating and signal conditioning instrument SU 600
lMounting set
lIdentification label
lDocumentation
-this operating instructions manual
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
-+
12
1
3
7
6
5
2
4
Fig.1:SU 600
1Status indications operating relay 1and 2
2Status indication fail safe relay
3Status indication operation
4[+/-]adjustment keys
5Insertable tag for identification of the measurement loop
6Function switch
7LC display
Scope of delivery
Overview
8SU 600 -4…20 mAsignal conditioning
Product description
30652-EN-050525

3.2Principle of operation
SU 600 is a universal single signal conditioning
instrument with integrated level switches and display for
continuously measuring sensors.At the same time,it
can serve as power supply unit for connected sensors.
SU 600 is designed for connection of an individual
4…20 mAsensor.The instrument is suitable for carrier
rail,panel and surface mounting.
SU 600 signal conditioning instrument can power the
connected sensor and also evaluate its measurement
signals.The requested parameter is indicated in the
display and,in addition,outputted to the integrated
current output for further processing.Hence the mea-
suring signal can be transmitted to a remote display or a
connected control system.In addition,two level relays
for control of pumps or other actuators are integrated.
Wide-range power supply unit with 20 …253 VAC/DC
for world-wide use.
You will find detailed information on the power supply in
the "Technical data"in the "Supplement".
3.3Adjustment
The adjustment of SU 600 is carried out via the
integrated keys and a 16-step function switch.
3.4Storage and transport
Your instrument was protected by packaging during
transport.Its capacity to handle normal loads during
transport is assured by a test acc.to DIN EN 24180.
The packaging of standard instruments consists of
environment-friendly,recyclable cardboard.For special
versions PE foam or PE foil is also used.Dispose of the
packaging material via specialised recycling companies.
Area of application
Physical principle
Power supply
Packaging
SU 600 -4…20 mAsignal conditioning 9
Product description
30652-EN-050525

lStorage and transport temperature see "Supplement
–Technical data –Ambient conditions"
lRelative humidity 20 …85 %
Storage and transport
temperature
10 SU 600 -4…20 mAsignal conditioning
Product description
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4Mounting
4.1General instructions
You can mount theSU 600 signal conditioning instru-
ment onto a carrier rail 35x7.5acc.to DIN EN 50022,or
directly on the wall by means of the three screws or in a
front panel or door of a switching cabinet.
4.2Mounting information
1Place the adapter plate [1]to the rear of SU 600
(spring of the adapter plate downward)and fasten
the plate with screw [2](M4x6).
2PlaceSU 600 against the carrier rail [3]from below
and push the instrument upward until it snaps in.
61
43,5
21 3
Fig.2:Carrier rail mounting
1Adapter plate
2Screw (M4x6)
3Carrier rail
1Insert the metal strap [1]from above into the housing
cut-out.
2Fasten the instrument directly to the wall with the
three screws (ømax.4mm).
Installation location
Carrier rail mounting
Wall mounting
SU 600 -4…20 mAsignal conditioning 11
Mounting
30652-EN-050525

105
80
ø 4,5*
1
Fig.3:Wall mounting
1Metal strap
1Remove the pluggable terminal strips from the top
and bottom.
2Screw pin [3]into the rear of SU 600 and tighten with
a screwdriver.
3Insert SU 600 from the front into the front panel [1].
4Place the clamping strap [2]from the back over the
pin [3]and pull it with the knurled nut [4]against the
panel [1].
Panel mounting
12 SU 600 -4…20 mAsignal conditioning
Mounting
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~90
92
1
32 4
Fig.4:Panel mounting
1Front panel
2Terminal strap
3Pin
4Knurled nut
SU 600 -4…20 mAsignal conditioning 13
Mounting
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5Connecting to power supply
5.1Preparing the connection
Always observe the following safety instructions:
lConnect only in the complete absence of line voltage
lIf overvoltages are expected,overvoltage arresters
should be installed.
In hazardous areas you should take note of the
appropriate regulations,conformity and type approval
certificates of the sensors and power supply units.
The power supply can be 20 …253 VAC,50/60 Hzor
20 …253 VDC.
Power supply of SU 600 is connected with standard
cable acc.to the national installation standards.
Standard two-wire cable without screening can be used
to connect sensors.If electromagnetic interference is
expected,screened cable must be used.
Connect the cable screen on both ends to ground
potential.In the sensor,the screen must be connected
directly to the internal ground terminal.The ground
terminal outside on the sensor housing must be
connected to the potential equalisation.
If potential equalisation currents are expected,the
screen connection on SU 600 must be made via a
ceramic capacitor (e.g.1nF,1500 V). The low
frequency potential equalisation currents are thus sup-
pressed,but the protective effect against high frequency
interference signals remains.
Take note of the corresponding installation regulations
for Ex applications.In particular,make sure that no
potential equalisation currents flow over the cable
screen.In case of grounding on both sides this can be
achieved by the use of a capacitor or a separate
potential equalisation.
Note safety instructions
Take note of safety
instructions for Ex
applications
Select power supply
Select connection cable
Cable screening and
grounding
Select connection
cable for Ex appli-
cations
14 SU 600 -4…20 mAsignal conditioning
Connecting to power supply
30652-EN-050525

5.2Connection procedure
Proceed as follows:
1Mount SU 600
2Connect sensor cable to terminal 1and 2,and where
applicable,connect the screen
3Connect power supply (switched off)to terminal 5
and 6
4Where applicable,connect fail safe and operating
relay as well as current output
The electrical connection is finished.
SU 600 -4…20 mAsignal conditioning 15
Connecting to power supply
30652-EN-050525

5.3Wiring plan
+-
12
+-
34
18 17 16 15 14 13 1211 10 9876 5
N- L1+
on
1
2
12
%
1 2
3 4 5 6
Fig.5:Terminal assignment SU 600
1Measurement data input,optionally available with sensor power
supply
2Current output
3Fail safe relay
4Relay 2
5Relay 1
6Power supply
Information:
In the menu,it is possible to switch over between active
and passive operation of the measurement data input:
lIn active mode,SU 600 provides the power for the
connected sensors.Power supply and measurement
data are transmitted over the same two-wire cable.
This mode is provided for connection of transmitters
without separate power supply (sensors in two-wire
version).
Overview
16 SU 600 -4…20 mAsignal conditioning
Connecting to power supply
30652-EN-050525

lIn passive mode,the sensors are not powered -only
the measured value is transmitted.This input is for
transmitters with their own separate power supply
(sensors in four-wire version). Furthermore,SU 600
can be connected to an existing circuit like a
standard current meter.
SU 600 -4…20 mAsignal conditioning 17
Connecting to power supply
30652-EN-050525

6Setup with the integrated indicating and
adjustment unit
6.1Adjustment system
The integrated indicating and adjustment unit is for
measured value display,adjustment and diagnosis ofSU
600.Indication and adjustment is carried out in the front
via a clear LC-display and a function switch as well as
two keys.
To open the cover,insert a screwdriver in the two slots
on the top and turn it slightly.
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
-+
12
1
3
7
6
5
2
4
Fig.6:Indicating and adjustment elements
1Status indications operating relay 1and 2
2Status indication fail safe relay
3Status indication operation
4Adjustment keys +/-
5Insertable tag for identification of the measurement loop
6Function switch
7LC display
18 SU 600 -4…20 mAsignal conditioning
Setup with the integrated indicating and adjustment unit
30652-EN-050525

l[Function switch]for selection of:
-Adjustment
-Relay switching points
-Scaling
-Current output
-Integration time
-Offset correction
-Current input active/passive
l[+/-]key:
-Change value of the parameter
By pushing the [+/-]key,you change the individual
parameters of the selected function.In this phase,the
processed parameter is flashing.Bybriefly pushing the
two keys simultaneously,you save your settings."Save"
is briefly displayed.
6.2Setup procedure
Setup encompasses mainly the adjustment of the
measurement loop.Ascaling of the measured value for
the LC display and the adaptation of the relay switching
points are additional settings.Additional setup steps
might be,if necessary,setting an integration time to
smooth the measured value or modifying the current
output characteristics.
To clearly denote the measuring unit,the supplied labels
can be inserted in the cover.In case several SU 600 are
used,each measurement loop should be clearly
labelled.
After being switched on,SU 600 first of all carries out a
short self-check.The following steps are carried out:
lInternal check of the electronics
lindication of the firmware version
lthe output signal jumps briefly to the set fault current
Then the actual measured value is displayed and the
corresponding current is transmitted to the current
output.
Key functions
Set up
Switch on phase
SU 600 -4…20 mAsignal conditioning 19
Setup with the integrated indicating and adjustment unit
30652-EN-050525

The measured value indication shows the digital
indication value and also an analogue bargraph.Here,it
is absolutely necessary that the function switch is set to
position [0]("OPERATE").
The following functions can be selected via the rotary
switch:
l0:Measured value display and simulation
l1:Relay 1switching point ON
l2:Relay 1switching point OFF
l3:Relay 2switching point ON
l4:Relay 2switching point OFF
l5:Decimal point position of the scaling
l6:Scaling for 100 %
l7:Scaling for 0%
l8:Changeover current output 0/4... 20 mA
l9:Damping of the measured value (integration time)
lA:Offset correction
lB:Min.adjustment in %by modifying the level
lC:Max.adjustment in %by modifying the level
lD:Min.adjustment in mAwithout modifying the level
lE:Max.adjustment in mAwithout modifying the level
lF:Changeover current input active/passive
lIn active mode,SU 600 provides the power supply
for the connected sensor.Power supply and mea-
sured value transmission are carried on the same
two-wire cable.This mode is provided for connection
of transmitters without separate power supply (sen-
sors in two-wire version).
lIn passive mode,no sensors are powered,only the
measured value is transmitted.This mode is for
connection of transmitters with own,separate power
supply (sensor in four-wire version).
àSet the function switch to position [F]and select the
suitable mode with the [+/-]keys.Save your settings
by pushing both keys simultaneously.
When a pressure transmitter is used,an offset correc-
tion should be carried out first.These instruments are
factory-set in a certain position.If the pressure trans-
mitter is now mounted in a different position,its
Measured value indication
Function switch
Current input active/pas-
sive
Offset correction
20 SU 600 -4…20 mAsignal conditioning
Setup with the integrated indicating and adjustment unit
30652-EN-050525