Listec SCU 800-03 User manual

LISTEC GmbH Am Sandberg 34 Tel. [phone] [e-mail]
8 4 4 2 4 I s e n Fax [phone] www.listec-gmbh.de
Linear Sensor Technology
LISTEC and LIST are registered trademarks
SCU 800-03
SEC15
(Software version V1.1 and higher)
Manual
Linear Heat
Detection
δ-LIST

δ-LIST Manual SCU800-03 & SEC15
CONTENTS
1 ABOUT THIS ANUAL......................................................................................................................... 4
1.1 ABBREVIATIONS IN THIS MANUAL.............................................................................................. 4
1. DOCUMENTATION STRUCTURE................................................................................................. 5
1.3 VALIDITY........................................................................................................................................ 5
2 GENERAL.............................................................................................................................................. 6
3 FUNCTIONAL DESCRIPTION............................................................................................................... 8
3.1 OPERATION MODES..................................................................................................................... 8
3.1.1 AUTO-CONFIGURED OPERATION....................................................................................... 8
3.1. CONFIGURED OPERATION.................................................................................................. 8
3. THE SCU'S METHOD OF OPERATION......................................................................................... 9
3. .1 MEASURING CYCLES........................................................................................................... 9
3. . TEMPERATURE EVALUATION.............................................................................................. 9
3. .3 REFERENCE PROFILE.......................................................................................................... 9
3. .4 DRIFT...................................................................................................................................... 9
3. .5 ALARM OUTPUT.................................................................................................................. 10
3. .6 ALARM-SIGNALLING........................................................................................................... 10
3. .7 COMMUNICATION INTERFACES........................................................................................ 10
4 INSTALLATION AND CONNECTION.................................................................................................. 11
4.1 SENSOR CABLE.......................................................................................................................... 11
4.1.1 MOUNTING........................................................................................................................... 11
4.1. CUTTING THE SENSOR CABLE......................................................................................... 1
4.1.3 STRIPPING THE SENSOR CABLE...................................................................................... 13
4.1.4 CRIMPING............................................................................................................................ 13
4.1.5 SHIELD CONNECTORS....................................................................................................... 14
4.1.6 CABLE ENDS........................................................................................................................ 15
4.1.6.1 CBO CONNECTION BOXES......................................................................................... 15
4.1.6. CCM150 CONNECTION MODULE................................................................................ 16
4.1.6.3 END15 END CAPS........................................................................................................ 16
4. SENSOR CONTROL UNIT (SCU)................................................................................................ 17
4. .1 MOUNTING THE SCU.......................................................................................................... 17
4. . SCU 800 MAIN BOARD........................................................................................................ 17
4. .3 CONNECTIONS.................................................................................................................... 18
4. .3.1 EARTHING.................................................................................................................... 18
4. .3. FAULT RELAY KL -4 (STOE)....................................................................................... 18
4. .3.3 ALARM RELAYS KL5-8 (AL1; AL )............................................................................... 18
4. .3.4 EXTERAL RESET KL9-10 (EXR).................................................................................. 19
4. .3.5 COMMUNICATION KL11-16 (COM).............................................................................. 19
4. .3.6 SENSOR CABLE CONNECTIONS................................................................................ 0
4. .3.7 LED BOARD CONNECTION......................................................................................... 0
4. .3.8 RS 3 INTERFACE....................................................................................................... 1
4. .3.9 TEST CONNECTOR..................................................................................................... 1
5 SETTINGS AND CO ISSIONING.................................................................................................... 22
5.1 MAIN BOARD...............................................................................................................................
5.1.1 EXTERNAL RESET..............................................................................................................
5.1. RS 485 TERMINATION.........................................................................................................
5.1.3 DISCHARGING IN STATIC ELECTRICAL FIELDS..............................................................
5.1.4 INTERFACE SWITCH...........................................................................................................
5.1.5 BAUD RATE.......................................................................................................................... 3
5.1.6 PROTOCOL SWITCH........................................................................................................... 3
5. LED-BOARD................................................................................................................................. 3
5.3 COMMISSIONING........................................................................................................................ 4
Page 2/28 LISTEC GmbH 60T023-01 / 2 /01/08

SCU800-03 & SEC15 δ-LIST Manual
5.4 FUNCTIONAL TEST..................................................................................................................... 4
6 DISPLAY AND OPERATION............................................................................................................... 25
6.1 DISPLAY (LEDS).......................................................................................................................... 5
6. OPERATION................................................................................................................................. 5
6. .1 BUTTONS TA1 AND TA ..................................................................................................... 5
6. . TEST..................................................................................................................................... 5
6. .3 RESET.................................................................................................................................. 6
6. .4 AUTO-SEEK.......................................................................................................................... 6
6. .5 SAVING THE CONFIGURATION.......................................................................................... 6
7 INSPECTION AND AINTENANCE.................................................................................................... 27
7.1 INSPECTION................................................................................................................................ 7
7. MAINTENANCE............................................................................................................................ 7
60T023-01 / 2 /01/08 LISTEC GmbH Page 3/28

δ-LIST Manual SCU800-03 & SEC15
Attention: Read this manual before installing and commissioning the system
Note: Settings made in this manual conform to a system response behaviour
according to EN54-5, class A1.
1 ABOUT THIS ANUAL
The following notations and abbreviations are used in this manual.
Note: All text, written in text boxes such as this, is of utmost importance to the
correct and successful installation of the system. These texts must be adhered to
at all times.
Text written in this font indicates text which is displayed either on the LC-
Display of the SCM4000 or on the screen of the connected PC.
Shaded Text indicates formulas used in the SC .
 are references to further information.
Commands called by pressing buttons or combinations of buttons are shown as follows:
BUTTON(S) Command: CLEAR-TEXT COMMAND nn
= Clear-text command from a PC keyboard
= Numerical command from a PC Keyboard or a SCM master control unit
( Manual “Commands and system messages”)
1.1 ABBREVIATIONS IN THIS ANUAL
CBO Connection box
CC Connection cable
CCM Connection module
CLB 4 way clincher female
DQ Data query
END End device
GND SCU/SCS and sensor cable ground(0V)
I/O Input/output
KL Terminal
NC Normally Closed (relays)
NO Normally Open (relays)
nc no connection
SCM Sensor Control Master (4000)
SCU Sensor Control Unit ( 000 or 3000)
SEC Sensor cable ( 0/x)
VK Cables between terminal block and unit
Page /28 LISTEC GmbH 60T023-01 / 2 /01/08

SCU800-03 & SEC15 δ-LIST Manual
1.2 DOCU ENTATION STRUCTURE
The documentation for the installation, commissioning and maintenance of δ-LIST Systems consists of
three manuals:
1. δ-LIST manual 60T0 3
This manual describes all the steps required to install and commission a δ-LIST system without
using the LISTterm terminal programme on a PC to set further parameters, i.e. commissioning in
the auto-configured mode( 3.1 OPERATION MODES). This manual covers following areas:
●GENERAL: short description of the δ-LIST System with its major components.
●FUNCTIONAL DESCRIPTION: operating modes and the SCU 800’s method of
operation, alarm-evaluation and transmission.
●INSTALLATION AND CONNECTION: installation of the sensor cable, cable
connections, SCU 800 installation and connections.
●SETTINGS AND COMMISSIONING: SCU 800 switch and jumper settings,
commissioning and testing the system.
●DISPLAY AND OPERATION: LED’s and buttons.
●INSPECTION AND MAINTENANCE: inspection and maintenance notes.
2. Extended commissioning manual for a δ-LIST system 60T0 4
An extension of the δ-LIST installation and commissioning manual, for the commissioning of
zoned δ-LIST systems ( 3.1. CONFIGURED OPERATION) and zonal relay alarm outputs.
Prerequisites for this manual are the terminal programme LISTterm and a training course. The
relay card REL800 is described. The configured-mode commissioning and maintenance of a
δ-LIST system are described using an example.
3. Commands and system messages 60T0 5
The description of all SCU 800 commands and messages
Further documentation :
1. LISTterm manual 60T0 9
. SCU 800 data sheet 60V041
3. SEC15 data sheet 60V040
4. External sensor data sheet 60V039
1.3 VALIDITY
This document is valid as of the following versions:
Software V1.1
SCU main board 04
LED card 0
The version number of the software is printed on the EPROM. Version numbers of cards are part of the
unit card-number:
xxxx-M00-vv-nnnnnn where xxxx = module number
vv = version
nnnnnn = serial number
60T023-01 / 2 /01/08 LISTEC GmbH Page 5/28

δ-LIST Manual SCU800-03 & SEC15
2 GENERAL
δ-LIST is a temperature measurement and fire detection system based on a sensor cable which, due to
its sealed construction and high temperature resolution, can be used in the harshest environmental
conditions.
The system consists of a control and evaluation unit (SCU 800, Sensor Control Unit) and a sensor cable
(SEC) with integrated temperature sensors. The sensor cable can be connected to the SCU 800 directly
or with a connection cable (CC) via a connection box (CBO). The ends of the sensor cable are sealed
with a heat shrinkable end cap (END, End Device).
The sensor cable SEC 15 consists of temperature sensors with individual addresses, mounted on a -
core flexible flat cable. The digital temperature transmission allows cable lengths of 50 m.
The sensor spacing is application dependant and freely selectable. Branched cable installations are
possible. The temperature sensors fixed addresses allow an exact physical location of each sensor.
An aluminium shield screens the cable from EMI. The jacket-material is flame-retarding and halogen-
free. The operating temperature range of the δ-LIST sensor cable is specified from -40°C to +85°C. The
functioning of the cable is not impaired at temperatures of up to +100°C. The cable and components can
resist much higher temperatures for short periods. The measured temperatures have a resolution of
0,1°.
The SCU 800 sensor control unit can monitor two SEC 15 sensor cables, each with a maximum length
of 50 m and/or 99 sensors.
Examples:
At least 10 sensors are required for the correct operation of the differential evaluation.
Page 6/28 LISTEC GmbH 60T023-01 / 2 /01/08
A
B
SCU800
Sensor Control Unit
LISTEC
A
B
SCU800
Sensor Control Unit
LISTEC
SEC (max. 50m / 99 sensors)
END (end cap)
connection K1 connection K
END (end cap)
SEC (max. 50m / 99 sensors)
SEC (max. 50m / 99 sensors)
e.g. connection K1
e.g. connection K
CC = 1x x0,8 shielded
(E30 / E90 if required)
SEC + CC = max. 50m
SEC max. 99 sensors

SCU800-03 & SEC15 δ-LIST Manual
The SCU 800 supplies the δ-LIST sensor cable with power (5V), performs the cyclic addressing of the
connected sensors, reads the measured temperature values and evaluates the data with reference to
different alarm-criteria. Both connected sensor cables are measured individually and alarms are set on
separate relays.
The SCU 800 can also be used as a slave in a Master / Slave system. The communications connection
between the master unit SCM 4000 and the slaves can either be RS-485 with up to 31 SCU 800 per
SCM 4000
or TTY current loop with a maximum of 8 slaves per master unit.
60T023-01 / 2 /01/08 LISTEC GmbH Page 7/28
SENSOR CONTROL UNIT
LIST
A
B
SCU800
Sensor Control Unit
LISTEC
A
B
SCU800
Sensor Control Unit
LISTEC
A
B
SCU800
Sensor Control Unit
LISTEC
A
B
SCU800
Sensor Control Unit
LISTEC
RS485 Bus = max. 1000m
SENSOR CONTROL UNIT
LIST
A
B
SCU800
Sensor Control Unit
LISTEC
A
B
SCU800
Sensor Control Unit
LISTEC
A
B
SCU800
Sensor Control Unit
LISTEC
1x x0,8 shielded
(max. 4000m / connection)

δ-LIST Manual SCU800-03 & SEC15
3 FUNCTIONAL DESCRIPTION
3.1 OPERATION ODES
The SCU can be operated in two modes:
a) Auto-configured operation
b) Configured operation
3.1.1 AUTO-CONFIGURED OPERATION
In auto-configured operation, which can be started with out programming aids, the SCU 800 evaluates
the temperatures of the connected sensor cables individually, according to pre-set parameters. Alarms
are only signalised by LEDs (alarm A, alarm B, fault) and relays (alarm A, alarm B, fault).
Note: These settings conform to a system response behaviour according to
EN54-5, class A1.
Initialisation is described in section 5.3 COMMISSIONING.
3.1.2 CONFIGURED OPERATION
Commissioning in the configured mode of operation requires a PC or Notebook and the terminal
programme LISTterm. This mode of operation allows the programming of sensors in a specific order,
the definition of up to 64 alarm sections, the setting of individual thresholds for each alarm section and
other project specific settings.
Note: this configuration mode is only available for SCU800 software versions
V1.1 or higher and LISTterm version V1. 0 or higher.
Programming can only be made by trained personnel and is described in the
extended commissioning manual for a δ-LIST system 60T0 4.
In the configured mode the SCU800 can also be integrated into a networked system with either a sensor
control master SCM4000 or with the connection to any other host (alarm control panel, SCADA system,
PLC, etc.).
Interfacing is via a predefined protocol and either a by RS485 or TTY current loop serial interface.
( 4. .3.5 COMMUNICATION)
For the connection to other systems, protocols like BITBUS, optical fibre, Ethernet, etc., are available on
request.
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SCU800-03 & SEC15 δ-LIST Manual
3.2 THE SCU'S ETHOD OF OPERATION
3.2.1 EASURING CYCLES
The SCU 800 executes measuring cycles in defined intervals. A measuring cycle consists of the
addressing of all sensors, reading of the temperature values of all measuring points and the subsequent
evaluation of the data. In auto-configured mode a new measuring cycle is started every 10 seconds
3.2.2 TE PERATURE EVALUATION
The reading of a temperature from a measuring point is followed by various calculations.
At first the plausibility and checksum of the temperature is tested. If there are discrepancies another
measurement is made. If the measurement is invalid a fault alarm is set.
All valid measurements are evaluated on two alarm criteria.
●A maximum temperature alarm is given if the temperature (T_act) exceeds the set level
TKRITA. This threshold is fixed at 50°C.
●A differential (rate of rise) alarm is given if the differential temperature (T_dif) exceeds the set
level TKRITD. This threshold is fixed at ,8°.
The differential temperature T_dif(n) is calculated according to the following formula:
T_dif(n) = T_act(n) - T_ref(n) - DRIFT
where: T_act(n) = actual measured temperature value of measuring point n
T_ref(n) = calculated differential temperature value of measuring point n
DRIFT = correction value calculated from the average temperatures
3.2.3 REFERENCE PROFILE
The reference temperatures (T_ref) of all of the measuring points (= reference profile), are gradually
adjusted to the actual temperatures to compensate for natural temperature variations (e.g. day, night,
seasons). The calculation interval for the reference profile and therefore the update rate, is set to meet
the response behaviour for thermal detectors.
3.2.4 DRIFT
Even temperature changes for all measuring points is accounted for by the DRIFT. This value is
calculated during the measurements and between the reference profile calculations, thus providing a
high system sensitivity of the without the risk of false alarms even at large ambient temperature
variations.
60T023-01 / 2 /01/08 LISTEC GmbH Page 9/28

δ-LIST Manual SCU800-03 & SEC15
3.2.5 ALAR OUTPUT
An absolute fire alarm FIRE! - AT is set if the actual temperature (T_act(n)) of a measuring point
exceeds the maximum threshold. The LED ALARM A or ALARM B will be activated together with the
corresponding relay contact.
A differential fire alarm FIRE! - DT is set if the differential value (T_dif(n)) of a measuring point
exceeds the differential threshold. The LED ALARM A or ALARM B will be activated together with the
corresponding relay contact.
An alarm is only set if a warning was given during the previous measuring cycle and the temperature did
not fall below the warning threshold afterwards.
3.2.6 ALAR -SIGNALLING
Two alarm LEDs (6.1 DISPLAY) and two alarm relays (4. .3.3 ALARM RELAYS) are dedicated to the
two sensor cable connections. An alarm in cable 1 will activate relay AL1 and LED A, respectively an
alarm in cable will activate relay AL and LED B.
3.2.7 CO UNICATION INTERFACES
The SCU 800 has one serial interface. It can be used as a RS- 3 interface for programming or as a
protocol interface to other systems and is available as a 9-pin SUB-D connector (ST 4). ( 4. .3.8
RS 3 INTERFACE)
When using the SCU 800 as a slave in a master-slave system, either a RS485 or TTY current loop
interface can be used. The signals for these interfaces are on terminals COM+ and COM-. ( 4. .3.5
COMMUNICATION)
Interface selection between RS 3 and RS485 (TTY) takes place via a bridge in the connector ST4.
The interface type RS485 or TTY is determined by the component assembly (standard assembly is
RS485). ( 4. .3.8 RS 3 INTERFACE)
Further information on the serial ports and on protocols are to be found in the extended commissioning
manual for a δ-LIST system 60T0 4.
Page 10/28 LISTEC GmbH 60T023-01 / 2 /01/08

SCU800-03 & SEC15 δ-LIST Manual
4 INSTALLATION AND CONNECTION
Important: To avoid damage to the SCU and to the Sensor Cable, disconnect the
power cable before adding or removing cables or printed circuit boards.
Connections may only be made while the unit is switched off.
4.1 SENSOR CABLE
Humidity: the sensor cable must always be protected from humidity, i.e. the cable
ends must be sealed while storing or mounting the cable.
Bending: the minimum bending radius of the sensor cable is 5 cm. This limit
must be adhered to at all times.
ounting Temperature: the mounting of the sensor cable should not take place
at temperatures below 10°C (45°F).
Should the system be used in a configured arrangement, i.e. in a master/slave system, it is advisable to
note the measuring point imprints on a drawing of the installation/plant while mounting the sensor cable.
Should there be fixed markings for alarm sections, the corresponding measuring point imprints should
also be noted. These notes can be of help during the configuration of the system.
4.1.1 OUNTING
The δ-LIST sensor cable can be mounted in various ways, e.g. with self-
locking clamps (as shown in the example), cable ties, pipe brackets, etc.
The type of mounting used should be selected according to the project
conditions / specifications.
The distance between fixings should not exceed 1m. The recommended
distance between clamps is 0,75m. The first fixing after a connection box
(CBO) should be mounted approximately 30 cm from the box. The last
fixing before an end device (END) should be mounted only a few
centimetres from the end.
Note: Some local authorities have special regulations regarding the mounting of
equipment on ceilings.
60T023-01 / 2 /01/08 LISTEC GmbH Page 11/28
* xxx * d-LIST SENSORKABEL * Dyyyxx * LISTEC
3-digit measuring
point imprint
Sensor cable designation:
yyy - Cable (batch) no.
xx - Sensor spacing
Cable jacket

δ-LIST Manual SCU800-03 & SEC15
4.1.2 CUTTING THE SENSOR CABLE
The cable can be cut to length with a large side- or cable-cutter.
Warning: Cuts should be a least 30 cm from a measuring point imprint.
The manufacturing process requires the δ-LIST sensor cable to be manufactured with pre- and post-
runs. These can be up to 4m long and do not contain any sensors. Pre- and post-runs are not part of
the length(s) noted on the delivery notes. When mounting the cable proceed as follows:
1. Use the delivery note or spool label to determine the imprint of the first measuring point (sensor) for
the respective cable. The sensors are always under the imprint. The cable number is always
designated by a "D" also indicates, like the designation SEC15/xx on the delivery note, the sensor
spacing of the cable:
Dyyy01 or SEC15/01 = 1 m sensor spacing
Dyyy05 or SEC15/05 = 5 m sensor spacing etc.
. Cut the sensor cable at ½ the sensor distance before the first sensor. Seal the cable with insulation
tape. The same procedure applies for the end of the sensor cable.
3. At a CBO xx/1 (connection box), the sensor cable should protrude 30cm over the beginning of the
box.
4. For a CBO xx/ or CBO xx/0 in the middle of the sensor cable, cut and seal the cable. The two
sensor cables should now overlap by approximately 30cm.
Note: Seal the sensor cable immediately after cutting.
Page 12/28 LISTEC GmbH 60T023-01 / 2 /01/08
* xxx * d-LIST SENSORKABEL * Dyyyxx * LISTEC * xxx
half sensor spacing sensor spacing
Cutting point
* xxx * d-LIST SENSORKABEL * Dyyyxx * LISTEC * xxx
CBO x5/1
30cm
Seal SEC with insulating tape or END15

SCU800-03 & SEC15 δ-LIST Manual
4.1.3 STRIPPING THE SENSOR CABLE
The sensor cable is stripped as shown below:
4.1.4 CRI PING
Male δ-LIST connectors (CLS ) are crimped onto the ends of the sensor cable which terminate in
connection boxes (CBO). When crimping make sure that the contacts are placed directly on the
conductors and do not cause short circuits between conductors. (Note the instructions in the Crimping
Tool Manual.)
60T023-01 / 2 /01/08 LISTEC GmbH Page 13/28
BEL * Dyyyxx * LISTEC
BEL * Dyyyxx * LISTEC
0,00 cm
1.) Use a LIST cable knife to score the SEC approximately 0cm from the end:
.) Note the orientation of the
flat cable in the SEC:
3.) Bend the SEC on the score, taking into account
the orientation of the flat cable:
4.) Strip off the cable jacket and filling material carefully:
5.) Cut off the Kevlar strands.
BEL * Dyyyxx * LISTEC
Flat cable
conductor
GND DATA DATA marking
CLS Crimping contact

δ-LIST Manual SCU800-03 & SEC15
4.1.5 SHIELD CONNECTORS
Note:The SEC shield is connected to the CCM-Module by a shield connector. The
shield connector must be pushed completely up to the cable jacket. Take care not
to damage the flat conductor when fitting the shield connector.
The shield connector fits over the cable jacket and under the shielding. The opposite end of the
connector is connected to terminals KL9, KL10, KL11 or KL1 of the CCM-Module or directly to the
SCU800's housing
Note:Two types of shield connectors are available. The type shown above is used
for connections to CCM modules, while the second type with a ring connector is
used for connections to the SCU800 housing.
Reference: see sections 4.1.6. CCM150 CONNECTION MODULE And 4. .3
CONNECTIONS for further details.
Page 1 /28 LISTEC GmbH 60T023-01 / 2 /01/08
BEL * Dyyyxx * LISTEC
BEL * Dyyyxx * LISTEC
BEL * Dyyyxx * LISTEC
for connection to a CCM
connection to a mounting screw inside the
SCU 800

SCU800-03 & SEC15 δ-LIST Manual
4.1.6 CABLE ENDS
Sensor cable connections can either be made directly in a SCU 800 ( 4. .3.6 SENSOR CABLE
CONNECTIONS) or via a connection box CBO with a CCM connection module,as described in this
section. In the latter case the connection to the SCU takes place via a one-pair shielded communication
cable.
Cable ends are sealed with a end cap.
4.1.6.1 CBO CONNECTION BOXES
Connection box(es) CBO are mounted at the point(s) where the sensor cable is connected to the CCM-
module(s):
Note: To ensure IP65 protection, use the correct mounting holes.
Note: Seal unused holes with the respective plugs.
60T023-01 / 2 /01/08 LISTEC GmbH Page 15/28
ca. 35 mm
PG 1
160 mm
160 mm
CBO15/x:
Material: ABS, thermoplast, halogen-free
Protection: IP65
Height: 90mm
Colour: RAL7035, light grey
Combustion behaviour: HB - UL 94
CBO25/x:
Material: Glas fibre reinforced polyester, halogen-free
Protection: IP65
Height: 100mm
Colour: RAL7001, grey
Combustion behaviour: VO self-extinguishing UL 94
Note: Grey points designate the pre-drilled mounting holes
44 mm
164 mm
PG 1
PG 13,5
PG 16
PG 1
PG 16
PG 13,5
ca. 35 mm
ca. 9 mm
PG 1

δ-LIST Manual SCU800-03 & SEC15
4.1.6.2 CC 150 CONNECTION ODULE
Note: If the SEC15 sensor cable is connected
directly to the SCU800, the connection to the CCM is
not required.
Warning: note the flat conductor orientation when
connecting the sensor cable to the CCM – use the
strain release to ensure correct seating.
The CCM-module is snapped onto the DIN rail in the CBO. The CCM-
module is the connection piece between the connection cable (CC) and
the sensor cable. The sensor cable is connected to the CCM through the
flat conductor strips which are permanently attached to the PCB. To
ensure a correct seating, use the accompanying locking bracket when
connecting the CLB (CCM) and CLS (SEC).
Signal Terminal Comment
D/Q KL4; KL8 Data = marking on the flat cable
GND KL3; KL7 Ground (0V)
Shield KL9 - KL1  4.1.5 SHIELD CONNECTORS
4.1.6.3 END15 END CAPS
Sensor cables ending in an end cap (END15) are striped as shown in 4.1.3 STRIPPING THE SENSOR
CABLE and then cut as follows:
Page 16/28 LISTEC GmbH 60T023-01 / 2 /01/08
KL4 KL3
KL8 KL7
KL9
KL10
KL1
KL11
D GND
GND D
DATA-Mark
DATA-Mark
Strain release
BEL * Dyyyxx * LISTEC
BEL * Dyyyxx * LISTEC
Coating:
thermo plastic glue
END15 (cut)
Strip SEC15, cut the
flat cable as shown
and insert into the END15.
END15
-shrink with heat-gun
(shrinks at ca.1 0°C)
-Material:
modified, neted polyolefin

SCU800-03 & SEC15 δ-LIST Manual
4.2 SENSOR CONTROL UNIT (SCU)
4.2.1 OUNTING THE SCU
Note: to ensure IP65 protection, the indicated mounting holes must be used
when mounting the SCU.
4.2.2 SCU 800 AIN BOARD
The following drawing shows the positions of the connections, jumpers, switches and buttons. All these
elements are described in this chapter.
60T023-01 / 2 /01/08 LISTEC GmbH Page 17/28
60 mm
150 mm
4 x Mounting holes
4 mm
100 mm
ST4 TA
TA1
S
S1 1
ON
9 6
5 1
1
ST3
+
1
ST7
BR
1
6
BR3
LG1
8 14
17
5
4 1
8
LG
ST ST1
BR1
F1
ST6
KL 0 KL19 KL18 KL17 KL16 KL15 KL14 KL13 KL1 KL11 KL10 KL9 KL8 KL7 KL6 KL5 KL4 KL3 KL KL1
GND DQ
K
GND DQ
K1
GND - +
COM
GND - +
COM
- +
EXR
C B
AL
C A
AL1
C NO NC
FAULT
IC1
IC10 IC13
ST5

δ-LIST Manual SCU800-03 & SEC15
4.2.3 CONNECTIONS
POWER SUPPLY
The SCU requires 1V - 9V DC on connector ST3 . Connector ST7 can
be used to supply further SCU's.
Note: Connect the power supply on completion of all other
connections.
Connections on ST3 and ST7 Pin 1 VDC ( 1V - 9V DC )
Pin Earth
Pin 3 GND (0V)
Fuse F1: 315 mA (fast-acting)
4.2.3.1 EARTHING
Terminal KL1, the 4 mounting holes of the main board and Pin on connectors ST3 & ST7 are the
earthing points for the power supply and the sensor cable.  4.1.5 SHIELD CONNECTORS
4.2.3.2 FAULT RELAY KL2-4 (STOE)
The fail-safe fault relay signalises any faults in the SCU800 or the sensor cable.
Its outputs are connected to the terminals through
IC-Socket LG , which can be populated with,
depending on the system requirements, resistors or
bridges.
The drawing shows the strainless situation. The relais normaly is energized.
4.2.3.3 ALAR RELAYS KL5-8 (AL1; AL2)
The alarm relays AL1 and AL signalise the differential and absolute alarms in the sensor cable SEC on
cable connection 1 (AL1) and cable connection (AL ). The relays can be used as NO, NC or as line
monitored contacts. The DIL platforms can be populated as required:
AL 1 and 2 as AL 1 and 2 as AL 1 and 2 with
NO contacts NC contacts monitored outputs
(Standard)
Page 18/28 LISTEC GmbH 60T023-01 / 2 /01/08
Name No. Contact
FAULT
KL NC
KL3 NO
KL4 C
Ra Rn Ra Rn Rn
Ra
1 7
814814
1 7
814
1 7
ALAL1 ALAL1 ALAL1
LG1 LG1 LG1
814
1 7
LG1
AL1 AL
KL 8
KL 7
KL6
KL5
Name Contact No. escription
AL1 A KL5 Working contact
C KL6 Common
Name Contact No. escription
AL B KL7 Working contact
C KL8 Common
1
ST3
1
ST7
F1
KL1
+
LG
8
1 4
5
KL
KL 4
KL 3

SCU800-03 & SEC15 δ-LIST Manual
4.2.3.4 EXTERAL RESET KL9-10 (EXR)
The SCU800 can be reset externally. BR is used to select (-1-) external power supply (a contact and
5Vdc is required for the reset signal) or (- -) internal power supply (only a contact is required for the reset
signal):
Warning: Do not use an external power supply when (1) internal power supply is
selected
Note: The external power supply may not exceed 5Vdc. Use a series resistance if a
higher voltage is used.
4.2.3.5 CO UNICATION KL11-16 (CO )
Terminals KL11-KL13 and KL14-KL16 are used for
master/slave communication, either via RS485 serial bus or a
TTY current loop (depending on which ICs are populated).
RS485:
Terminals KL11 and KL14, as well as terminals KL1 and KL15, are connected in parallel. This allows a
“loop-through” to the next SCU on the RS485 bus. Star type networks are on a RS485 are not allowed.
BR1 is used to activate the termination resistors on a RS485-bus and may only be set at the ends of the
RS485 bus.
60T023-01 / 2 /01/08 LISTEC GmbH Page 19/28
Name Signal No. Remark
COM
+ KL11; KL14 RS485/A
- KL1 ;KL15 RS485/B
GND KL13;KL16 Ground
Interface IC Remark
RS485 IC1 Standard
Current loop (TTY) IC10;IC13 Option
ST4
9 6
5 1
BR1
IC1
IC10 IC13
TA
TA1
S1 1
ON
1
+5V
3
4
5
6
390R
+5V
EXR(+)
KL9
EXR(-)
KL10
1
3
4
5
6
1
3
4
5
6
BR BR BR
TA
-1-
(Standard)
-2-
0V DC
5V DC
EXR(-)
KL10
EXR(+)
KL9
EXR(-)
KL10
EXR(+)
KL9

δ-LIST Manual SCU800-03 & SEC15
Current loop (Option):
To create star type master-/slave-networks, a TTY current loop can be used instead of the RS485
interface.
Note: Only one pair of terminals (KL11 & KL1 or KL14 & KL15) can be used to
connect current loops. Signals cannot be passed on to the next SCU.
Interface data:
Baud rate: selectable ( 5.1.5 BAUD RATE), 8 data bits, no parity, 1 stop bit
More information in chapter 3. .7 COMMUNICATION INTERFACES.
4.2.3.6 SENSOR CABLE CONNECTIONS
If the sensor cable is inserted directly into the SCU800 connection takes place via the connectors ST1
(K1) and ST (K ) on the main SCU800 card.
Note: Check the orientation of the sensor cable when connecting; use the locking
bracket to ensure correct seating
Sensor cable connected to the SCU via a connection cable (CC; 1x x0,8 shielded) use terminals KL 17-
18 (K1) and KL 19- 0 (K ) for the connection.
Important: Check the orientation of the sensor cable when connecting.
Cable No. Relay Connector Terminal Signal
K1 AL1 ST1 KL17 D/Q
KL18 GND
K AL ST KL19 D/Q
KL 0 GND
4.2.3.7 LED BOARD CONNECTION
The LED-board is connected to the SCU via ST6. If this board is not connected to the SCU, a fault alarm
will be set.
Page 20/28 LISTEC GmbH 60T023-01 / 2 /01/08
Name Signal No. Remark
COM
+ KL11 or KL14 current loop positive
- KL1 or KL15 current loop negative
GND KL13; KL16 Comms ground
8
7
ST ST1
KL 0 KL19 KL18 KL17 KL16 KL15 KL14
GND DQ
K
GND DQ
K1
GND - +
COM