Leveltec SL 1000 Compact User guide

Pääkonttori/Tehdas: Internet:
Head Office/Factory: Puh. 019-6888 270
LEVELTEC OY Fax [phone] www.leveltec.fi
Hirvihaarantie 368 Tel. [phone] [e-mail]
FIN 04680 HIRVIHAARA Fax [phone]
sl1000 compact_system manual_kop106le_20130903.doc tulostettu 3.9.2013
SL 1000 Compact
System Manual
KOP106LE
Ver. 20130903

SL1000 Compact, System manual 2(57)
Table of contents Page
1GENERAL 4
2 SYSTEM STRUCTURE 5
2.1 Central unit 5
2.1.1 Technical specifications 5
2.1.2 General 6
2.1.3 Standard parts of the central 7
2.1.3.1 Power supply unit 7
2.1.3.2 Processor card 9
2.1.3.3 Connection card for the terminal 9
2.1.4 Optional parts of the central 10
2.1.4.1 Extension card for the optional bus 10
2.1.4.2 Real time clock 10
2.1.4.3 Relay card 10
2.1.4.4 Serial communication card 10
2.2 Cable network 10
2.3 Terminals ans Special connection Units 11
2.3.1 General 11
2.3.2 Terminal models 12
2.3.3 Special connection untis 14
3. INSTALLATION, CONNECTING AND TAKING INTO USE 15
3.1 Installation 15
3.1.1 Contents of delivery 15
3.1.2 Installation schemes and requirements 15
3.2 Connecting of the Units 17
3.2.1 The connection cards 17
3.2.2 The user terminals 17
3.2.3 The programming terminal and the maintenance terminal 18
3.2.4 The relay card 18
3.2.5 The real time clock 18
3.2.6 The serial communication card 19
3.3 Taking into use 19
4 FAULTFINDING 20

SL1000 Compact, System manual 3(57)
5 SYSTEM FUNCTIONS 24
5.1 Basic functions 24
5.2 Special Functions and Features of the Terminals 28
5.3 Group Calls 31
5.4 Blocking of Calls 31
6 USER PROGRAMMING OF THE SYSTEM 32
6.1 Programmable Functions and System Definition Diagram 32
6.1.1 The free numbers 32
6.1.2 The type of the terminals 33
6.1.3 The group calls 33
6.1.4 The short code numbers and the transfer numbers 33
6.1.5 The special features of the terminals 34
6.1.6 The blockings 34
6.1.7 The relays 35
6.1.8 The time 35
The system definition diagram 36
6.2 Programming Instructions and Programming Diagram 37
6.2.1 Programming the free numbers 38
6.2.2 Programming the type of terminal 39
6.2.3 Programming the group calls 39
6.2.4 Programming the short code and transfer numbers 40
6.2.5 Programming the special features of the terminals 40
6.2.6 Programming the blockings 42
6.2.7 Programming the relays 42
6.2.8 Programming the time 42
6.2.9 Clearing of all programming 43
The programming diagram 44
6.3 Programming Examples 45
7 INSTRUCTIONS FOR USE 49-53
System Definition Diagram 54-55
Programming Diagram 56-57

SL1000 Compact, System manual 4(57)
1. GENERAL
The SL 1000 Compact multicom system is an advanced multipurpose intercom system with a maximum
size of 32 terminals and with 3 two-way speech channels and 1 one-way music channel. In addition to
handling the speech communication between any two user terminals, the system can transmit numeric
messages from one terminal to another, using the 4-digit display unit which some of the terminal models
have. The display unit tells which terminal number you are in contact with, the time of the day, stored call
requests and programmed information codes, which, for instance, tell the expected time of return or the
reason for absence. Thanks to the possibility of storing information codes and leaving call requests, the
system serves the user also in cases where the normal telephone or a standard intercom do not, that is
when the person sought for is busy or not present. Because the probability for this can be very high, in
certain types of organizations even 70 %, the SL 1000 Compact system increases the efficiency of your
work and gives you more undisturbed working time than any traditional system.
The SL 1000 Compact system replaces, as it is, partly or in whole several such systems that usually are
bought separately, fir instance messenger call systems, nurse call systems, gate/door station systems,
absence registration systems, public address (PA)/program distribution systems and audible paging
systems with answer back possibility. Using the serial communication card of the system a peripheral
device such as a monitor or a printer can be connected, or the system can be coupled to another system,
such as a wireless paging system or a system for flexible working time registration. A relay can also be
used to control e.g. video cameras or electrical door locks, and in this way a more efficient integrated total
solution can be found to fulfill the internal communication and surveillance needs of most organizations.
The heart of the SL 1000 Compact system is a fully electronic microprocessor controlled central unit. The
system functions are based on a program stored into the memory of the central, so the modifying of the
functions or the adding of some special features do not usually require any additional electronics, but only
the exchanging of the memory chips. Only the relay functions and the serial communication to a peripheral
device or another system need additional cards. In addition to those there is a real time clock card, with
the help of which the system clock keeps the time also during power breaks, which the standard clock
does not.
A big number of special functions and features are included in the standard program, such as free
numbering of the terminals, determining the members of the group calls, giving the priority right to desired
terminals, and defining of blockings, i.e. which terminal are not allowed to call certain other terminals.
These can all be defined or connected on or off at the customer's and even by the customer. This user
programming does not require any special equipment but is done using a normal desk terminal of the
system, which for the duration of the programming session is connected to the programming connector of
the central. All programming performed is stored into non-volatile memory, which retains its contents even
during power breaks. The user programmability of the SL 1000 Compact system makes it very flexible
and modifiable according to the needs of the customer.

SL1000 Compact, System manual 5(57)
2. SYSTEM STRUCTURE
The system consists of the following main parts, see figure 1:
CONNECTION TO SOME
OTHER SYSTEM
1-4 RELAY CONTROLS
COMMUNICATION
SERIAL
RELAY CARD
B
U
S
E
X
T
E
N
S
I
O
OPTIONAL PARTS
POWER SUPPLY
CENTRAL
PROCESSOR
CONNECTION
CARDS
1
2
3
4
5
6
7
8
STANDARD PART
CENTRAL CABLE NETWORK USER TERMINALS
CALL
A
SL
Compact
123
456
789
0M
CA
i
FIGURE 1
CLOCK CARD
REAL TIME
CARD N
C
A
R
D
- A central unit, which always includes a power supply unit. a processor card, which also functions as the
mother board for the connection cards, and the required amount (1-8 ) of connection cards, to each of
which 4 terminals can be connected.
The optional cards of the central, of which one can be connected without the optional extension card and
all three with it, are the real time clock card,the serial communication card and the relay card, which has 4
relays.
- A cable network, which interconnects the central and the terminals. The network is a standard star-
formed network, where each terminal is connected to the central with its own two-twisted pairs. Both the
powering of the terminals and the two-way speech communication and two-way data transmission are
done via these 4 wires.
- Terminals, through which the users communicate. There are several different models for different
needs and environments. The most important terminal model is the desk top model with display,
intended for office-type use
2.1 THE CENTRAL UNIT
2.1.1 TECHNICAL SPECIFICATIONS
Environment conditions
temperature 0 °C - 45 °C (32 ºF - 113 ºF)
relative humidity 20 - 80 %
Mechanical dimensions (mm)
Central cabinet:
Height 275
Width 520
Depth 110
Connection cards 71x192
Optional cards 51x84
Extension card for the optional cards 65x69
Weight central cabinet without connection cards 6,5 kg (14,3 lb.)
with connection cards 9,3 kg (20,5 lb.)
Mains supply 110/220/240 V AC, 50 - 60 Hz, 100 W

SL1000 Compact, System manual 6(57)
Length of detachable mains cable 2 m
Smallest central size 4 terminals
Expansion step 4 terminals
Maximum central size 32 terminals
Number of speech channels and listening channels 3/1 or 2/3
Cable type between central and terminal MHS 1x4x0,5 or equivalent
Maximum cable length (loop resistance 200 ohm) 1 km (3300 ft)
Frequency response 250 - 6000 Hz ±3 dB
Transmission level in both directions 0 dBm
Switching field electronic (analog switch matrix)
Storing of user programming non-volatile EEPROM memory
The calling numbers of the terminals 10-41 or freely programmable
(2-, 3- or 4-digits long numbers)
2.1.2 GENERAL
The central unit of the SL 1000 Compact system is intended for wall-mounting and is 275 mm high, 520
mm wide and 110 mm deep. The cover of the central cabinet is removable, and the mounting plate
fastened to the back side of the cabinet holds a power supply unit (PSU) at the left end and the processor
cards (PRO-C), which also functions as the back board but or mother board for the connection cards (CC-
4), see figure 2.
The central can have 1-8 connection cards installed, and as to each of these up to 4 terminals can be
connected, the maximum size of the Compact system is 32 terminals. A radio unit or some other type of
program source can be connected to one or several connection numbers via a special interface unit, in
which case the maximum number of terminals is decreased.
The central has 3 two-way speech channels, so 6 terminals can simultaneously communicate with each
other pairwise. Additionally there is one one-way channel, which can be used as a listening channel for a
radio or some other program source. All terminals in the system can be listening to this program channel
at the same time. If 2 or 3 program sources are included in the system, the number of speech channels
drops to 2.
The central is fully electronic and the speech connections are based on an analog matrix controlled by the
processor. The signalling, or data transmission, between the processor and the terminals is handled via a
current loop. The signalling includes reading the buttons depressed as the terminals, turning the LEDs of
the terminals on and off, and sending numbers to the display of the terminals.
Three types of optional cards can be installed into the central besides the connection cards for the
terminals: A real time clock card (RTC) with battery back-up, which keeps the system clock running during
power breaks, a serial communication card (SCC), which is needed for controlling a CRT-terminal or a
printer, or when the Compact system is connected to some other type of system, and a relay card (RC-4)
with 4 relays, which can be used to control e.g. CCTV cameras or electrical door locks. If more than one
optional card (OPT BUS) is additionally needed, which extends the bus for the optional cards, so that all 3
optional cards can be connected.
The Compact system will, after connecting power on for the first time, function in its basic mode, without
the customer having to do anything else than setting the time of day to the system clock. The connection
numbers for the terminals are then 10-41. The numbers can, however, be freely programmed to be in one
of the ranges 00-99, 000-999 or 0000-9999. A lot of other special features and functions can also be
programmed by the user, such as group calls, call blockings, priority rights, relay controls, etc. All these
user programmings, as well as the short code numbers, transfer addresses, call request numbers,
information codes and alarm time settings if the individual terminals, are stored in the non-volatile
EEPROM memory of the processor card, so they are retained also past power breaks.

SL1000 Compact, System manual 7(57)
2.1.3 THE STANDARD PARTS OF THE CENTRAL
The functional standard parts of the central are the power supply unit, the processor card and the
connection cards for four terminals.
2.1.3.1 THE POWER SUPPLY UNIT PSU
The power supply unit, which is built into the central cabinet, consist of a mains inlet connector, a mains
transformer, a rectifying/prefiltering card and a regulating/postfiltering part.
The mains inlet socket is on the left and side plate of the cabinet. The two primary fuses are located inside
the socket, so the replacement of the fuses can take place without removing the cover of the cabinet. The
fuse type is T2A with a mains voltage of 110 V AC, T1A with a mains voltage of 220 V AC or 240 V AC.
The mains transformer located in the upper left corner of the cabinet is constructed to accept 110, 220 or
240 V AC at 50/60 Hz. The mains input voltage is selected with soldered jumpers at the primary winding.
Below the transformer the power supply unit card (PSU-C) is located. It includes the rectifiers, the filtering
capacitors and the two secondary fuses of type T1,6A. The card is fastened to the mounting plate of the
cabinet with the bolts of the two filtering capacitors. The output voltages of the card are +30 V, +10 V and -
10 V, which together with the ground voltage are passed to the processor card via a 4-pin connector for
regulation and postfiltering.
The left upper corner of the processor card holds the remaining part of the power supply unit. In this part
the -30 V voltage is stabilized for the use as supply voltage for the terminals. The +21 V needed as
programming voltage for the EEPROM and the +7,5 V needed as reference voltage on the connection
cards are also made from the +30 V. The +5 V and -5 V needed by the logic and analog circuitry are
regulated from the +10 V and -10 V.
The +5 V and -5 V regulators (7805 and 7905) and the stabilizing transistor (TIP 121) for the +30 V are
mounted on the cooling profile. The postfiltering capacitors are located below and to the right of the
profile. The components for generating the voltages +21 V and +7,5 V, including the trimming
potentiometer for the +21 V, can be found above the connectors for the two first connection cards. Below
the cooling profile there are three LED indicators, from which the presence of the voltages -30 V, +5 V and
-5 V can be checked.

SL1000 Compact, System manual 8(57)
29
4
5 6
1
3
10 11
30
12
26 25
27
21
14
15
17
18
20 13
2828
31
29
8
7
19
16
24
23
22
Mains connector with primary fuses (2 pcs)
Transformator 110/220/240 V AC, 100 W
Power Supply unit card PSU-C
Secondary fuses (2 x T1,6 A)
Rectifier (+ 30 V)
Rectifier (+10 V, -10 V)
Connection between PSU-C and PRO-C cards
Processori card PRO-C
+30 V stabilizing transistor (TIP121)
+5 V voltage regulator (7805)
5
4
6
3
2
1
7
8
9
10
I/O-interface circuit (8155)
2 MHz clock adjustment
RESET-button
RESET LED
TRAP level trimming potentiometer
RESET level trimming potentiometer
Programming terminal connector
Connectors for the 1-8 connection cards
Connection cards (CC-4)
Connector for the optional cards
Optional card (RTC, RC-4, SCC)
21
22
24
25
23
26
27
28
29
30
31
RAM (TC 5564/5565)
20
-5 V voltage regulator (7905)
LED indicators for +30 V, +5 V, -5 V
+21 V trimming potentiometer
CPU (8085A)
EPROM (27128/27256)
Jumper if type of = 27256
11
12
13
14
15
16 15
EPROM (2764/27128)
EEPROM (2817/2817A)
17
18
Jumpers for selection of EEPROM type:
19
2817A2817
.. ..
..
..
..
..
..
..

SL1000 Compact, System manual 9(57)
2.1.3.2 THE PROCESSOR CARD PRO-C
The processor card also functions as the back board or mother board for the connection cards, so it is
equipped with eight 32-pin connectors, on the connection card bus. In the lower left corner of the
processor card there is an additional 32-pin connector of a shorter type for the connection of the optional
cards. There is also a 4-pin connector marked "DESIGN", to which a standard desk terminal with display
can be connected for the user programming of the system.
The processor circuitry consists of the CPU (microprocessor 8085A), EPROM program memory (two
chips, one type 27128 or 27256, one type of 2764 or 27128, so the program memory size is 8-48 kbytes),
RAM data memory (TC 5564 or 5565 of 8 kbytes), non-volatile EEPROM data memory (2817 or 2817A of
2 kbytes), the I/O and timer circuit (8155), and the discrete components.
Three of the components are adjustable: two trimming potentiometers for adjusting the RESET and TRAP
levels of the CPU and one trimming capacitor for adjusting the 2 MHz clock frequency. These are all
adjusted at the factory and need normally not to be touched.
The program is automatically started when power is connected to the central. With the RESET button on
the processor card the program can be started from the beginning if needed. The RESET LED is lit when
the CPU is in the RESET state.
All data transmission from the processor to the user terminals and vice versa goes via the I/O interface
circuit 8155 and the connection cards. The processor keeps scanning the terminals to read the keys
depressed, and sends data to the 4 LEDs and the 4-digit numeric display of the terminals. The control of
the analog connection matrix on the connection cards is also handled by the processor via the 8155. The
state of the switches in the matrix determine which terminals are in speech connection with each other
and in which speech channel..
2.1.3.3 THE CONNECTION CARD CC-4 FOR THE TERMINALS
On the processor back board card there are connectors for 1-8 connection cards (CC-4, Connection
Card), to each of which 4 user terminals can be connected, the maximum capacity of the Compact central
thus being 32 terminals.
Instead of any terminal one can connect a program source (radio, tape recorder, etc.) via an AIC-unit
(Audio Input Connection Unit), or an amplifier with loudspeakers for announcement purposes via an AOC-
R-unit (Audio Output Connection Unit with Relay).
The terminals or the special audio interface units are connected to the connection cards using 4-pin
connectors, meaning that replacing a connection card or moving a terminal from one connection number
to another is very easy. The physical connection numbers, which also are the initial values of the calling
numbers for the terminals, are 10-41, but these can very easily be altered from the programming terminal.
All programmed terminal numbers must be of the same length, 2-, 3- or 4-digits long.
The functional parts of the connection card are the connection matrix, the interface circuitry for the
terminals, and the decoding logic. The connection matrix consists of 8 rows and a maximum of 64
columns (each connection cards adds 8 columns to the matrix). Each terminal needs 2 columns, one for
the incoming and one for the outgoing speech signal. The terminals are via the interface circuitry
connected to these two columns. One of the 8 rows is needed for the 488 Hz tone signal, from which the
call connection, alarm, busy, etc. tone signals are generated. Two rows are needed for one speech
channel, that is one row for each direction. Of the 7 rows left 3 two-way speech channels can thus be
formed. The remaining row can be used as a one-way listening channel for e.g. music. Each cross point
of the rows and columns of the matrix is a CMOS analog switch. The processor connects these switches
on and off via the decoding logic, thus determining which terminals are connected to which channels..
Each terminal is connected to the connection card with a 4-wire cable consisting of 2 twisted pairs, the
maximum length of which can be about 1 km. One twisted pair (A, B) is used for supplying power to the
terminal and for the speech signal going to the terminal, and the other pair (C, D) is for the speech signal
coming from the terminal and for the two-way signalling between the terminal and the central. The
interface circuitry on the connection card separates these signals from each other.

SL1000 Compact, System manual 10(57)
2.1.4 THE OPTIONAL PARTS OF THE CENTRAL
The optional parts of the central are the extension card for extending the bus for the optional cards, the
real time clock card, the relay card and the serial communication card.
2.1.4.1 THE EXTENSION CARD OPT BUS FOR THE OPTIONAL BUS
In the lower left corner of the processor card there is a 32-pin connector, to which one of the three optional
cards (the real time clock card, the relay card, the serial communication card) can be connected.
If more than one optional card is to be included in the central, one needs the bus extension card, to which
all three optional cards can be connected.
2.1.4.2 THE REAL TIME CLOCK RTC
The Compact system has as standard a software clock, the accuracy of which depends on the 2 MHz
clock frequency of the processor. The clock is running only as long as the mains voltage is connected; if a
mains break occurs the clock will be cleared and started from 00:00.
The real time clock card has its own battery back-up, so it will keep running also during power breaks,
which may be up to about two days long. The battery is, when needed, automatically recharged from the
+5 V voltage, the maximum charging time for an empty battery being some 15 hours.
The system automatically knows if the optional clock card is connected or not, and uses the software
clock if it isn't.
2.1.4.3 THE RELAY CARD RC-4
There are four relays on the relays card. Each relay has one potential free contact, which is normally
open. The maximum contact ratings with resistive loads are maximum voltage 48 V AC, 48 V DC,
maximum current 5 A (at 48 V AC or 24 V DC).
With the relay card the Compact central can control external devices, such as CCTV cameras, door locks,
etc.
2.1.4.4 THE SERIAL COMMUNICATION CARD SCC
The SCC (= Serial Communication Card) is an asynchronous serial communication interface of the
Compact central. The card includes both the RS 232C and 20 mA current loop connections with
selectable baud rates. The card is meant for two-way communication with other systems, CRT terminals,
printers and so on.
2.2 THE CABLE NETWORK
The cable network is a standard 4-wire star-configuration network of the same type as is used in all
telephone installations. Each user terminals is connected to the central with its own two-twisted pairs. The
cable type is e.g. MHS 1x4x0,5 or equivalent, where the wire diameter 0,5 mm means that the maximum
cable distance between the central and the terminals is about 1 km (3300 ft), based on a maximum loop
resistance of 200 ohm.
The star-wiring saves installation costs, because multicables containing several twisted pairs can be used
between the central and junction boxes located in different parts of the building. From the junction boxes
onwards 2-pair cabling is used for branching to the individual user terminals. Another advantage is, that
the Compact central can later be replaced with its big brother, the SL 1000 Mark II central, with a capacity
of 8-448 terminals compared with the capacity 4-32 terminals of the Compact central, without altering the
existing cable network, but only expanding it. The biggest advantage of a star-formed network over a ring
network is, however, that the malfunction of one user terminal or its cable does not prevent the rest of the
system from working.
The cabling is terminated at the user terminal end in the desk terminal cases with a 8-pin RJ-45 socket.
The wall terminals have a 4-pole screw connector for terminating the cable.