KROHNE SU600 User Manual

Operating Instructions

SU 600

4 … 20 mA signal conditioning
instrument

Contents

Contents

1 About this document

1.1 Function .........................

1.2 Target group ......................

1.3 Symbolism used....................

2 For your safety

2.1 Authorised personnel ................

2.2 Appropriate use ....................

2.3 Warning about misuse ...............

2.4 General safety instructions ............

2.5 CE conformity .....................

3 Product description

3.1 Configuration ......................

3.2 Principle of operation ................

3.3 Adjustment........................

3.4 Storage and transport ................

4 Mounting

4.1

General instructions .................

4.2 Mounting information ................

4
4
4

6
6
6
6
6

8
9
9
9

11
11

5 Connecting to power supply

5.1 Preparing the connection .............

5.2 Connection procedure ...............

5.3 Wiring plan .......................

14
15
16

6 Setup with the integrated indicating and

adjustment unit

6.1 Adjustment system ..................

6.2 Setup procedure ...................

6.3 Application example .................

18
19
24

7 Maintenance and fault rectification

7.1 Maintenance ......................

7.2 Fault rectification ...................

2 SU 600 - 4 … 20 mA signal conditioning

27
27

30652-EN-050525

Contents

7.3 Instrument repair ...................

8 Dismounting

8.1 Dismounting procedure ...............

8.2 Disposal .........................

9 Supplement

9.1 Technical data .....................

9.2 Dimensions .......................

9.3 Certificate ........................

28

29
29

30
33
34

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SU 600 - 4 … 20 mA signal conditioning 3

About this document

1 About this document

1.1 Function

This operating instructions manual has all the informa­tion you need for quick setup and safe operation of SU

600. Please read this manual before you start setup.

1.2 Target 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.

1.3 Symbolism 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 E xap­plications.

l List

The dot set in front indicates a list with no implied
sequence.

à Action

This arrow indicates a single action.

4 SU 600 - 4 … 20 mA signal conditioning

30652-EN-050525

1 Sequence

Numbers set in front indicate successive steps in a
procedure.

About this document

30652-EN-050525

SU 600 - 4 … 20 mA signal conditioning 5

For your safety

2 For your safety

2.1 Authorised 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.

2.2 Appropriate use

SU 600 is a universal signal conditioning instrument and
power supply unit for connection of a 4 … 20 mA/HART
sensor.

2.3 Warning 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.

2.4 General 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.

2.5 CE conformity

SU 600 is in CE conformity with EMC (89/336/EWG) and
NSR (73/23/EWG).

6 SU 600 - 4 … 20 mA signal conditioning

30652-EN-050525

For your safety

Conformity has been judged acc. to the following

standards:

l EMC:

- Emission EN 61326: 1997 (class A)

- Susceptibility EN 61326: 1997/A1: 1998

l NSR: 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 A instrument acc. to
EN 61326. If SU 600 is used in a different environment,
the electromagnetic compatibility to other instruments
must be ensured by suitable measures.

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SU 600 - 4 … 20 mA signal conditioning 7

Product description

3 Product description

3.1 Configuration

Scope of delivery

Overview

The scope of delivery encompasses:

l Indicating and signal conditioning instrument SU 600
l Mounting set
l Identification label
l Documentation

- this operating instructions manual

1

2

7

6

+

0

1

F

2

E

3

D

4

5

C

6

B

7

A

8

9

-

1
2
3

4

5

Fig. 1: SU 600

1 Status indications operating relay 1 and 2
2 Status indication fail safe relay
3 Status indication operation
4 [+/-] adjustment keys
5 Insertable tag for identification of the measurement loop
6 Function switch
7 LC display

8 SU 600 - 4 … 20 mA signal conditioning

30652-EN-050525

3.2 Principle of operation

Product description

Area of application

Physical principle

Power supply

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 mA sensor. 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 mea­suring 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".

3.3 Adjustment

The adjustment of SU 600 is carried out via the
integrated keys and a 16-step function switch.

3.4 Storage and transport

Packaging

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SU 600 - 4 … 20 mA signal conditioning 9

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.

Product description

Storage and transport
temperature

l Storage and transport temperature see "Supplement

– Technical data – Ambient conditions"

l Relative humidity 20 … 85 %

10 SU 600 - 4 … 20 mA signal conditioning

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4 Mounting

4.1 General instructions

Mounting

Installation location

Carrier rail mounting

You can mount theSU 600 signal conditioning instru-
ment onto a carrier rail 35x7.5 acc. 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.

4.2 Mounting information

1 Place the adapter plate [1] to the rear of SU 600

(spring of the adapter plate downward) and fasten

the plate with screw [2](M4x6).

2 PlaceSU 600 against the carrier rail [3] from below

and push the instrument upward until it snaps in.

21 3

61

43,5

Fig. 2: Carrier rail mounting

1 Adapter plate
2 Screw (M4x6)
3 Carrier rail

Wall mounting

1 Insert the metal strap [1] from above into the housing

cut-out.

2 Fasten the instrument directly to the wall with the

three screws (ø max. 4 mm).

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SU 600 - 4 … 20 mA signal conditioning 11

Mounting

1

105

ø 4,5*

80

Fig. 3: Wall mounting

1 Metal strap

Panel mounting

1 Remove the pluggable terminal strips from the top

and bottom.

2 Screw pin [3] into the rear of SU 600 and tighten with

a screwdriver.

3 Insert SU 600 from the front into the front panel [1].

4 Place the clamping strap [2] from the back over the

pin [3] and pull it with the knurled nut [4] against the
panel [1].

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12 SU 600 - 4 … 20 mA signal conditioning

Mounting

1

~90

Fig. 4: Panel mounting

1 Front panel
2 Terminal strap
3 Pin
4 Knurled nut

92

32 4

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SU 600 - 4 … 20 mA signal conditioning 13

Connecting to power supply

5 Connecting to power supply

5.1 Preparing the connection

Note safety instructions

Take note of safety

instructions for Ex
applications

Select power supply

Select connection cable

Cable screening and

grounding

Always observe the following safety instructions:

l Connect only in the complete absence of line voltage
l If 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. 1 nF, 1500 V). The low
frequency potential equalisation currents are thus sup­pressed, but the protective effect against high frequency
interference signals remains.

Select connection
cable for Ex appli­cations

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.

14 SU 600 - 4 … 20 mA signal conditioning

30652-EN-050525

Connecting to power supply

5.2 Connection procedure

Proceed as follows:

1 Mount SU 600

2 Connect sensor cable to terminal 1 and 2, and where

applicable, connect the screen

3 Connect power supply (switched off) to terminal 5

and 6

4 Where applicable, connect fail safe and operating

relay as well as current output

The electrical connection is finished.

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SU 600 - 4 … 20 mA signal conditioning 15

Connecting to power supply

5.3 Wiring plan

Overview

-

+

2

1

1 2

1

2

-

+

4

3

1

2

on

%

18 1716 15 14 13 1211 10 9 876 5

3 4 5 6

Fig. 5: Terminal assignment SU 600

1 Measurement data input, optionally available with sensor power

supply

2 Current output
3 Fail safe relay
4 Relay 2
5 Relay 1
6 Power supply

N- L1+

Information:

In the menu, it is possible to switch over between active
and passive operation of the measurement data input:

l In 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).

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Connecting to power supply

l In 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.

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SU 600 - 4 … 20 mA signal conditioning 17

Setup with the integrated indicating and adjustment unit

6 Setup with the integrated indicating and

adjustment unit

6.1 Adjustment 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.

1

2

7

6

+

0

1

F

2

E

3

D

4

5

C

6

B

7

A

8

9

Fig. 6: Indicating and adjustment elements

1 Status indications operating relay 1 and 2
2 Status indication fail safe relay
3 Status indication operation
4 Adjustment keys +/-
5 Insertable tag for identification of the measurement loop
6 Function switch
7 LC display

-

1
2
3

4

5

30652-EN-050525

18 SU 600 - 4 … 20 mA signal conditioning

Setup with the integrated indicating and adjustment unit

Key functions

Set up

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.

6.2 Setup procedure

Setup encompasses mainly the adjustment of the
measurement loop. A scaling 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.

Switch on phase

After being switched on, SU 600 first of all carries out a
short self-check. The following steps are carried out:

l Internal check of the electronics
l indication of the firmware version
l the 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.

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SU 600 - 4 … 20 mA signal conditioning 19

Setup with the integrated indicating and adjustment unit

Measured value indication

Function switch

Current input active/pas-

sive

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:

l 0: Measured value display and simulation
l 1: Relay 1 switching point ON
l 2: Relay 1 switching point OFF
l 3: Relay 2 switching point ON
l 4: Relay 2 switching point OFF
l 5: Decimal point position of the scaling
l 6: Scaling for 100 %
l 7: Scaling for 0 %
l 8: Changeover current output 0/4 ... 20 mA
l 9: Damping of the measured value (integration time)
l A: Offset correction
l B: Min. adjustment in % by modifying the level
l C: Max. adjustment in % by modifying the level
l D: Min. adjustment in mA without modifying the level
l E: Max. adjustment in mA without modifying the level
l F: Changeover current input active/passive

l In active mode, SU 600 provides the power supply

for the connected sensor. Power supply and mea­sured value transmission are carried on the same
two-wire cable. This mode is provided for connection
of transmitters without separate power supply (sen­sors in two-wire version).

l In 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).

à Set the function switch to position [F] and select the

suitable mode with the [+/-] keys. Save your settings
by pushing both keys simultaneously.

Offset correction

When a pressure transmitter is used, an offset correc­tion should be carried out first. These instruments are
factory-set in a certain position. If the pressure trans­mitter is now mounted in a different position, its

20 SU 600 - 4 … 20 mA signal conditioning

30652-EN-050525

Setup with the integrated indicating and adjustment unit

measuring range is shifted slightly. The zero point is
readjusted by carrying out the offset correction in
uncovered (unpressurised) condition. The complete
measuring range will be shifted by the deviating amount.

à Make sure that the pressure transmitter is completely

unpressurised, uncovered (unimmersed) and moun­ted in its final position.

à Set the function switch to position [ A ]. The display

indicates now the actual sensor current in mA. Save
the current status by pushing the [ +/- ] keys
simultaneously.

Adjustment in mA without
changing the level

Adjustment in % by chan­ging the level

For this adjustment procedure, two sensor current
values (4 … 20 mA) must be entered corresponding to
the levels 0 % and 100 %.

When using a pressure transmitter, an offset correction
should be carried out to reach maximum accuracy.
Carry out this offset correction before adjustment and
with the sensor uncovered (unimmersed).

à Select now position [D] or [E] on the function switch,

enter the current values in mA for min. or max.
adjustment and save your settings.

During this adjustment procedure, the current level is
assigned to a certain percentage value. For this reason,
percentage values that correspond to the actual filling
levels must be entered for the min. and max. adjust­ment. The ideal calibration is at 0 % and 100 %.
Because it is not always possible to empty or fill a vessel
completely, any value can of course be entered. The
greater the difference between the two adjustment
points, the more precise the measurement. It does not
matter which value is entered first.

à Select position [B] or [C] on the function switch, enter

the percentage values for the min. and max.
adjustment and save your settings.

Relay outputs

Two operating relays are integrated inSU 600 for level
detection. First of all, determine at which switching
points the relays should switch on and off again.

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SU 600 - 4 … 20 mA signal conditioning 21

Setup with the integrated indicating and adjustment unit

Furthermore you have to distinguish between the relay

modes overfill and dry run protection. You switch over by
exchanging the ON/OFF values of the relay.

l Overfill protection: Relay is switched off when the

max. level is exceeded (safe currentless condition),
relay is switched on again when the level falls below
the min. level (switch on point < switch off point).

l Dry run protection: Relay is switched off when the

level falls below the min. level (safe currentless
condition), relay is switched on again when the max.
level is exceeded (switch on point > switch off point).

à To adjust the on and off switching points of relay 1,

set the function switch to position [1] or [2], enter the
switching points for ON or OFF and save your
settings. If necessary, proceed in the same way with
relay 2 (position [3] or [4]).

1

off (on)

on (off)

t

LED

on

2

off

on

3

off

1 Level
2 Mode overfill protection
3 Mode dry run protection

22 SU 600 - 4 … 20 mA signal conditioning

30652-EN-050525

Setup with the integrated indicating and adjustment unit

Scaling

Damping

Scaling is the conversion of the measured value into a
certain parameter or measuring unit. Instead of the
percentage value, the volume can be displayed, e.g. in l.
Indicating values between max.-9999 and +9999 are
possible.

à First of all, determine the max. indicating range and

the number of decimal places after the decimal point

-- max. four decimal places can be displayed. Select
position [ 5 ] of the function switch, place the decimal
point in the required position and save your settings.

à Now select position [6] or [7] on the function switch,

enter the requested values for 100 % or 0 % and
save your settings.

To suppress fluctuation in the measured value display,
e.g. caused by an agitated product surface, an integra­tion time can be set. This time can be between 0 and
250 seconds. Keep in mind that this setting will increase
the reaction time of the measurement, and that the
reaction to quick changes of the measured value will be
delayed. In general, a time of a few seconds is sufficient
to smooth the measured value display.

à Now select position [9] on the function switch, enter

the requested value and save your settings.

Currentoutput0/4 …20 mA

The characteristics of the current output can be
switched over from 4 … 20 mA to 0 … 20 mA.

à Now select position [8] on the function switch, adjust

the requested characteristics curve and save your
settings.

Simulation

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SU 600 - 4 … 20 mA signal conditioning 23

To check if the settings ofSU 600 are correct, the

simulation mode can be used. Any individual measured
value can be simulated and e.g. the correct behaviour of
the relays and the connected instruments can be
checked.

Switching over between the functions "OPERATE" and
"Simulation" is done by pushing the [+/-] keys for at least

3 seconds.In the simulation mode, the set value flashes
on the display. The simulation can be switched off by

Setup with the integrated indicating and adjustment unit

pushing both keys again for approx. 3 seconds. If no key
is pushed, the display switches automatically over to
"OPERATE" after approx. 60 minutes and the simulation
is terminated.

à To start simulation, push the [ +/- ] keys simultan-

eously until the displayed value starts flashing
(approx. 3 seconds). By pushing either o f the [ +/- ]
keys, you can set the requested simulation value and
make your check.

Reset

With a reset, all values set by the user will be lost and
are reset to factory settings.

à Interrupt the power supply of SU 600. Push the [+/-]

keys simultaneously and hold them while you switch
on the power supply. The display shows "RES" and
the default settings will be restored. These are the
following:

l Relay switch on points: 10 %
l Relay switch off points: 100 %
l Decimal point: 888.8
l Display min: 0
l Display max: 100.0
l Integration time: 0 s
l Offset correction: 0
l Current output: 4 … 20 mA
l Min. adjustment: 0 % or 4 mA
l Max. adjustment: 100 % or 20 mA

6.3 Application example

l An upright cylindrical (linear) tank has a volume of

2700 l

l The max. filling volume is 2650 l, the min. filling

volume 50 l

l The level sensor in the vessel is a pressure

transmitter (passive), outputting a standardised
4 … 20 mA signal

l For further processing, an additional 4 … 20 mA

output signal is required

30652-EN-050525

24 SU 600 - 4 … 20 mA signal conditioning

General procedure

Setup with the integrated indicating and adjustment unit

l The full and empty adjustment was carried out

directly in the sensor. The following values are
outputted:

- max. volume (display max.) 20 mA = 2650 l

- min. volume (display min.) 4 mA = 50 l

l Relay 1 should switch on an emptying pump at a

level of 90 % and switch off the pump at a level of

10 %

1 Select the following functions with the rotary switch.

2 Push one of the two [+/-] adjustment keys, the digital

indication flashes (if the rotary switch is set to
"OPERATE", the [+/-] keys are inoperable).

3 Adjust the requested value with the [+/-] keys. If you

hold the key pushed, the digital indication changes
the value more quickly.

4 Save your settings by pushing the [+/-] keys

simultaneously.

Current output

à Set the function switch to position [8]. Select with the

[+/-] keys the measured value output 4 … 20 mA or

0 … 20 mA. For this example, choose 4 – 20.

The displayed numbers have the following meanings:

l 0 – 20 = 0 … 20 mA
l 4 – 20 = 4 … 20 mA

à Save the value by pushing the [+/-] keys simultan-

eously.

To scale the indication of SU 600, the filling volumes for
0 % and 100 %. The vessel does not have to be filled or

emptied.

Scaled indication at 0 %

Scaled indication at 100 %

30652-EN-050525

SU 600 - 4 … 20 mA signal conditioning 25

1 Set the function switch to position [7](display min.).

2 Set the value to 50 via the [+/-] keys.

3 Save the value by pushing both keys simultaneously.

1 Set the function switch to position [6](display max.).

2 Set the value to 2650 via the [+/-] keys.

3 Save the value by pushing both keys simultaneously.

Setup with the integrated indicating and adjustment unit

Decimal point

Relay

Because the range of the example vessel is between 50 l
to 2650 l, you will need all four positions of the digital
indication.

1 Set the function switch to position [5](Decimal Point).

2 By pushing the [+/-] keys, you move the decimal

point.

3 Save the value by pushing both keys simultaneously.

l Set the function switch to position [ 1 ](relay 1 on).

For the given example, select the value 90.0 (90.0 %)
with the [ +/- ] keys. The internal relay 1 then switches
on when this value is reached. Save the value by
pushing the two keys simultaneously.

l Set the function switch to position [ 2](relay 1 off).

Select the value 10.0 (10.0 %) with the [ +/-] keys.
The internal relay 1 then switches off when the value

falls below this value. The respective relay control
lamp lights when the relay is energized. If the
switching points are too close together (<0.1 %), the
appropriate LED flashes. The relay takes on the safe
condition. Inmode"OPERATE " an error message is
outputted on the display.

l If you want to control additional relays, proceed in the

same way, as with relay 1. The switch positions for
setting the respective relays are stated in the list of
the function switch under "Setup procedure".

Note:

If you want to change the mode (i.e. the switching
function of the relays), you have to exchange the Onand
Off values.

26 SU 600 - 4 … 20 mA signal conditioning

30652-EN-050525

Maintenance and fault rectification

7 Maintenance and fault rectification

7.1 Maintenance

When used as directed in normal operation, SU 600 is
completely maintenance-free.

7.2 Fault rectification

Causes of malfunction

Fault rectification

Fault messages

SU 600 offers maximum reliability. Nevertheless faults
can occur during operation. These may be caused by
the following, e.g.:

l Measured value of the sensor not correct
l Power supply
l Interference on the cables

The first measures to be taken are to check the input/
output signals as well as to evaluate the error messages
via the display. The procedure is described below. In
many cases, the causes can be determined in this way
and faults can be rectified.

? E003

l CRC-error

à Carry out a reset

à Return instrument for repair

? E014

l Short-circuit

à Eliminate short-circuit

à If necessary, exchange defective sensor

? E015

l Line break

à Repair sensor cable or replace it

à Check sensor connection

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SU 600 - 4 … 20 mA signal conditioning 27

Maintenance and fault rectification

? E016

l Empty/full adjustment reversed

à Carry out a fresh adjustment

? E017

l Adjustment span too small

à Carry out a fresh adjustment and increase the

distance between min. and max. adjustment

? E021

l Scaling span too small

à Carry out a fresh scaling, increase the distance

between min. and max. scaling.

? E110

l Relay switching points too close together

à Increase the difference between the two relay

switching points

7.3 Instrument repair

If a repair is necessary, please proceed as follows:

You can download a return form from our Internet

homepage
media-lounge/PDF-Download/Specimen_e.pdf.

By doing this you help us carry out the repair quickly and
without having to call back for needed information.

l Print and fill out one form per instrument
l Clean the instrument and pack it damage-proof
l Attach the completed form and possibly also a safety

data sheet to the instrument.

28 SU 600 - 4 … 20 mA signal conditioning

http://www.krohne-mar.com/fileadmin/

30652-EN-050525

Dismounting

8 Dismounting

8.1 Dismounting procedure

Warning:

Before dismounting, be aware of dangerous process
conditions such as e.g. pressure in the vessel, high
temperatures, corrosive or toxic products etc.

Take note of chapters "Mounting" and "Connecting to
power supply" and carry out the listed steps in reverse

order.

8.2 Disposal

SU 600 consists of materials which can be recycled by
specialised recycling companies. We have purposely
designed the electronic modules to be easily separable.
Mark the instrument as scrap and dispose of it according
to government regulations (electronic scrap ordinance,

…).

Materials: see "Technical data"

If you cannot dispose of the instrument properly, please

contact us about disposal methods or return.

30652-EN-050525

SU 600 - 4 … 20 mA signal conditioning 29

Supplement

9 Supplement

9.1 Technical data

General data

Series instrument for panel or wall mounting or

mounting on carrier rail 35x7.5 acc. to

EN 50022

Dimensions W = 96 mm (3.78 in), H = 104 mm (4.09 in),

D = 90 mm (3.54 in)

Weight approx. 400 g (0.88 lbs)
Housing material plastic ABS/POM
Screw terminals max. wire cross section 1.5 mm²

Power supply

Power supply 20 ... 253 VAC, 50/60 Hz; 20 ... 253 VDC
Power consumption 12 VA, 4 W

Sensor input

N

umber of sensors 1x 4 … 20 mA

Kind of input (switch over)

- mode active sensor is powered by SU 600

- mode passive sensor has own power supply

Measured value transmission 4 … 20 mA analogue
Terminal voltage mode active 19.5 … 14.5 V at 4 … 20 mA
Current limitation mode active approx. 30 mA
Inner resistance mode passive < 250 Ohm
Detection line break <= 3.6 mA
Detection shortcircuit >= 21 mA
Adjustment range

- Empty adjustment 3.8 … 20.2 mA

- Full adjustment 4.1 … 20.5 mA

- min. adjustment delta 300 µ

A

Connection cable 2-wire standard cable (screening recom-

mended)

30 SU 600 - 4 … 20 mA signal conditioning

30652-EN-050525

Supplement

Relay outputs

Quantity 2x operating relay, 1x fail safe relay
Contact floating spdt
Contact material AG NI 0.15 hard gold-plated
Turn-on voltage min. 10 mVDC, max. 250 VAC/DC
Switching current min. 10 µADC, max. 3 AAC, 1 ADC
Breaking capacitance min 50 mW, max. 500 VA, max. 54 WDC
Min. switching hysteresis 0.5 %

Current outputs

Quantity 1x output
Range 0/4 … 20 mA
Resolution 0.1 % or 20 µA
Max

. load 500 Ohm
Fault signal 22 mA
Linearity error 0.1 % (relating to 20 mA)
Temperature error 0.01 %/K (relating to 20 mA)

Displays

Measured value indication

- LC display (45x45 mm) digital and quasianalogue indication

- max. indicating range -9999 ... 9999

LED displays

- status indication operating vol-

1x LED green

tage

- status indication fault signal 1x LED red

- status indication operating re-

2x LED yellow

lay 1/2

Adjustment

Adjustment elements 2x keys in the front, 1x function switch

Ambient conditions

Ambient temperature -20 …

+60°C (-4 … +140°F)

Storage and transport temperature -40 … +80°C (-40 … +176°F)

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SU 600 - 4 … 20 mA signal conditioning 31

Supplement

Electrical protective measures

Protection

- Wall/rail mounting IP 20

- Panel mounting IP 40

Overvoltage category II
Protection class II

Electrical separating measures

Reliable separation acc. to VDE 0106 part 1 between power supply, sensor input
and digital part

- Reference voltage 250 V

- insulation resistance 3.75 kV

Galvanic separation between relay output and digital part

- Reference voltage 250 V

- insulation resistance 4 kV

32 SU 600 - 4 … 20 mA signal conditioning

30652-EN-050525

9.2 Dimensions

Supplement

1

2

Fig. 7: Dimensions SU 600

")

")

")

8

64

/

8

/

/

3

1

5

92mm (3

111mm (4

102mm (4

69mm (2 23/32") 2mm (5/64")19mm (3/4")

%

96mm (3 25/32")

")

1

32

2

/

25

on

96mm (3

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SU 600 - 4 … 20 mA signal conditioning 33

Supplement

9.3 Certificate

CE declaration of conformity

Fig. 8: CE declaration of conformity

34 SU 600 - 4 … 20 mA signal conditioning

30652-EN-050525

30652-EN-050525

SU 600 - 4 … 20 mA signal conditioning 35

Subject to change without notice

30652-EN-050525