TE Connectivity FSA-PLUS User manual

TECHNICAL MANUAL
FSA-PLUSSWITCHER
(MODEM VERSION)

FSA-PLUS Switcher (Modem Version)
Technical Manual
6341 3 103-12 - 17.05.2011
Page 2
Table of Contents
1 Introduction.................................................................................................4
2 Selectable Services....................................................................................5
3 Tranfer Switch ............................................................................................6
4 Applications of the FSA-PLUS Switcher.....................................................7
4.1 Application in Double Mode........................................................................7
4.2 Application in Single Mode .......................................................................10
5 Monitoring and Alarms..............................................................................11
5.1 Monitoring and Alarms in Double Mode....................................................11
5.1.1 Monitoring and Signalling of FSA-PLUS Switcher (central or external
FSA-PLUS Switcher)................................................................................11
5.1.2 Additional Monitoring and Signalling of the Central FSA-PLUS Switcher.11
5.2 Monitoring and Alarms in Single Mode.....................................................12
6 Interfaces..................................................................................................13
6.1 Power Supply ...........................................................................................13
6.2 Modem Interface.......................................................................................14
6.3 Interface for Line Measurements (Double Mode only) or for an External
Switch (Double Mode or Single Mode) .....................................................15
6.4 Interface for an Alarm Contact..................................................................16
7 Considerations for Use.............................................................................17
7.1 Operation and Connecting Plans for the Control Card (FCU)...................17
7.1.1 Path Switching (Double Mode).................................................................17
7.1.2 Single Mode..............................................................................................19
7.2 Overview of the Position of Operational Controls and Connecting
Elements on the Control Card (FCU)........................................................20
7.3 Pin Connection Table for the Control Card (FCU)....................................21
7.4 Settings and Configurations .....................................................................22
7.4.1 Addressing the Moving Card (MOC).........................................................22
7.4.2 Configuration of the Control Card (FCU)..................................................23
7.5 Signalling..................................................................................................24
7.5.1 Signalling during the Switch-On Process..................................................24
7.5.2 Signalling in Double Mode........................................................................25
7.5.3 Signalling in Single Mode .........................................................................26
7.6 Refresh.....................................................................................................27

FSA-PLUS Switcher (Modem Version)
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8 General Characteristics and References..................................................27
8.1 Mechanics and Construction ....................................................................27
8.2 Climate and Environment .........................................................................27
8.3 Electromagnetic Compatibility ..................................................................28
8.4 Safety Regulations ...................................................................................28
8.5 Safety Instructions....................................................................................28
9 Ratings .....................................................................................................29
10 Trouble-shooting.......................................................................................30

FSA-PLUS Switcher (Modem Version)
Technical Manual
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Page 4
1 Introduction
The following technical manual describes a safety transfer (switchover) switch as
part of the FSA-PLUS family (FSA Switcher —Flexible, Safe, Automatic). The
transfer switch can also reverse all standard communication services with a
bandwidth of up to 60 MHz. The restrictions of the connected services are to be
found within the framework of category three and/or the former category four.

FSA-PLUS Switcher (Modem Version)
Technical Manual
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2 Selectable Services
The FSA-PLUS Switchers are designed in such a way that the following services
can be connected in accordance with the corresponding specifications of ETSI
and BellCore:
Plain Old Telephony Service (POTS)
ISDN Basic Rate,
ISDN Primary Rate,
64 kbit/s and 2 Mbit/s and 1.5 Mbit/s permanent leased line
High speed Digital Subscriber Line (HDSL)
Asymmetric Digital Subscriber Line (ADSL)
Data services, which satisfy the following boundary conditions, can also be con-
nected:
Max. connectable voltage
1
220 VAC / 200 VDC
2
Max. connectable current 11 A 2
Max. connectable power 160 WAC / 30 WDC 2
Max. bandwidth < 60 MHz
LSA-PLUS lines are fitted without primary protection elements for the termination
of the service cable (coming and going).
1
For reasons of electrical safety in case of accidental contact, only homopolar earthed TNV sig-
nals (telecommunication network voltage) or SELV signals (safety extra low voltage) are permit-
ted in accordance with EN 60950 !
2
Passing over these limiting values leads to the destruction of the device!

FSA-PLUS Switcher (Modem Version)
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3 Transfer Switch
The FSA-PLUS Switcher is designed as a relay-based reversing switch with the
switch function of a change-over contact. With each switching action, all relays will
be switchover together. The max. switching capacity amounts to 100 x 200 copper
pairs. The reversing switch consists of up to five identical groups of components
(Moving Card MOC). Each one of these groups of components switches 20 cop-
per pairs over to 40 copper pairs. The FSA-PLUS Switcher can be equipped with
a random number of MOCs, up to the maximum number. Retroactive fitting or
stripping down by adding or removing MOCs is also possible.
Failures of the power supply do not alter the interconnection state (due to the
bistable relay used!).
MOC 2
(assembly set)
MOC 3
(assembly set)
MOC 4
(assembly set)
MOC 5
(assembly set)
FSA-PLUS Switcher
Side1
Side2
Tip
Ring
Ring
Tip
Tip
Ring
IN / OUT
1 twisted
pair
Side1
Side2
Tip
Ring
Ring
Tip
Tip
Ring
IN / OUT
Switch 20
Switch 19
Switch 1
Switch 2
Controls
MOC 1
(basic unit)
1 twisted
pair
Picture 1: Reversing switch of the FSA-PLUS Switcher

FSA-PLUS Switcher (Modem Version)
Technical Manual
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4 Applications of the FSA-PLUS Switcher
The FSA -PLUS Switcher can be used both for the switching of one device or sys-
tem over to another device or system (single mode) and for the switching of a
transmission path over to another transmission path (double mode).
4.1 Application in Double Mode
The FSA-PLUS Switcher can be used in double mode for critical connections
which do not permit interruptions in the event of disturbances on the line level
(e.g. connections to banks, air traffic control, hospitals, etc.).
In double mode, two FSA-PLUS Switchers form a system which, by means of
variable reverse switching criteria, can switch from one transmission path over to
another transmission path. In each switch-over, both FSA-PLUS Switchers are al-
ways jointly switched over.
The interaction of the two FSA-PLUS Switchers is carried out by means of a per-
manent modem connection which enables a distance range of up to 10km. The
modem interface required for this is integrated in the FSA-PLUS Switcher.
The complete signalling of both FSA-PLUS Switcher for switch status and possible
alarms is carried out on the central FSA-PLUS Switcher. The external
FSA-PLUS Switcher limits the signalling to the display of its own switch status as
well as its own alarms.

FSA-PLUS Switcher (Modem Version)
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The reverse switching criterion for the FSA-PLUS Switcher can be selected from
among the following possibilities:
Automatic Reversing
In the case of automatic reversing, the line quality of a copper pair is applied as
reverse switching criterion and this is monitored by means of the external
FSA-PLUS Switcher. At the same time, the line is tested for disturbance and a
minimum insulating resistance of wire to wire and wire to earth. After falling
short of specific limiting values, it is automatically switched from the main path
(SIDE1) over to the reserve path (SIDE2) and a special alarm is set to on.
The switching from the reserve path over to the main path is only possible after
a selectively targeted manual reset.
Central
FSA-PLUS Switcher External
FSA-PLUS Switcher
Modem leased line
connection
100 copper pairs for signal
and data transmission
(Main path, SIDE1)
Distance
max. 10 km
Monitoring of the line
quality
(Main path)
Monitoring of the
line quality
(Reserve path)
100 copper pairs
for signal and
data transmission
100 copper pairs
for signal and
data transmission
100 copper pairs for signal
and data transmission
(Reseve path, SIDE2)
Power supply Power supply
Alarm contact
Alarm contact
Picture 2: Application of the FSA-PLUS Switcher in double mode;
Automatic path switching

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Manual Reverse Switching
Manual reverse switching can only be carried out via the central FSA-PLUS
Switcher. The criterion for reverse switching is determined (according to the
configuration) either by a local switch on the Switcher or by a remote switch.
The distance of the remote switch can run to several hundred metres.
Central
FSA-PLUS Switcher External
FSA-PLUS Switcher
Modem leased line
connection
110V - 230V AC (AC-Version)
40,5V - 72V DC (DC-Version) 110V - 230V AC (AC-Version)
40,5V - 72V DC (DC-Version)
100 copper pairs for signal
and data tranmission
(Main path)
Distance
max. 10 km
Interface for an
external switch
100 copper pairs
for signal and
data tranmission
100 copper pairs
for signal and
data tranmission
100 copper pairs for signal
and data tranmission
(Reserve path)
Picture 3: Application of the FSA-PLUS Switcher in double mode;
Manual path switching

FSA-PLUS Switcher (Modem Version)
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4.2 Application in Single Mode
In single mode, an FSA-PLUS Switcher forms a reverse switching system which
switchover, by means of variable reverse switching criteria, a device A from a de-
vice B over to a device C (e.g. subscriber‘s extension stations, etc.).
The criterion for reverse switching for the FSA-PLUS Switcher can be selected
from among the following possibilities:
Manual external reverse switching
Manual external reverse switching is carried out by means of an external
switch, which can be situated at a distance of up to several hundred metres
away.
Manual local reverse switching
Manual local reverse switching is carried out by means of a switch positioned in
the device.
FSA-PLUS Switcher
110V - 230V AC (AC-Version)
40,5V - 72V DC (DC-Version)
Interface for an
external switch
Galvanic separate
contact for the signalling
of an urgent alarm
100 copper pairs for data
and signal transmission
(Main path, SIDE1)
Device A
Device B
Device C
100 copper pairs for data
and signal transmission
(Reserve path, SIDE2)
100 copper pairs for data
and signal transmission
Picture 4: Application of the FSA-PLUS Switcher in the single mode.

FSA-PLUS Switcher (Modem Version)
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5 Monitoring and Alarms
The FSA-PLUS Switcher provides extensive options for monitoring as well as the
alarms resulting from this, independent of the configuration.
5.1 Monitoring and Alarms in Double Mode
In double mode, the monitoring and signalling of alarms for the central and exter-
nal FSA-PLUS Switcher is different, since only the central FSA-PLUS Switcher
receives all the information from the complete system (both FSA-PLUS Switch-
ers). The signalling in the case of the external FSA-PLUS Switcher is limited to its
own status and its own alarms.
5.1.1 Monitoring and Signalling of FSA-PLUS Switcher (Central or External
FSA-PLUS Switcher)
Signalling of switch status
Signalling of operating conditions (auto / manual operation)
Monitoring of all moving cards by means of cyclic write / read operations and
alarm in the event of failure
Recognition of the number of moving cards
Comparison of the number of moving cards (double mode only)
Alarm in the event of failure of an internal voltage
Alarm in the event of failure of the primary supply voltage (DC version only)
Monitoring of the modem connection
Alarm in the event of failure of the modem connection
Monitoring and signalling of the interface for the measurement of the line. In the
case of operation with automatic reverse switching, there is an alarm in addition
to the signalling.
5.1.2 Additional Monitoring and Signalling of the Central FSA-PLUS
Switcher
The central FSA-PLUS Switcher monitors the whole system, i.e. it monitors both
FSA-PLUS Switchers according to the criteria cited in section 5.1.1.
In addition, there is a specifically targeted alarm with details of the alarm as well
as the alarm source which is effected by the central FSA-PLUS Switcher.
In the event of failure of the primary supply voltage (DC version only) or an operat-
ing voltage of the external FSA-PLUS Switcher, this failure leads to a specifically
targeted urgent alarm in the FSA-PLUS Switcher.

FSA-PLUS Switcher (Modem Version)
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5.2 Monitoring and Alarms in Single Mode
Monitoring and signalling of the FSA-PLUS Switcher
Signalling of the switch status
Monitoring of all moving cards by means of cyclical write / read operations
and alarm in the event of failure
Recognition of the number of moving cards
Alarm in the event of failure of an internal voltage
Alarm in the event of failure of the primary distribution voltage (DC version
only)

FSA-PLUS Switcher (Modem Version)
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6 Interfaces
6.1 Power Supply
The FSA-PLUS Switcher is available in an AC version (Alternating Current) and a
DC version (Direct Current).
The power supply of the AC version is designed in such a way that 115 V / 60 Hz
as well as 230 V / 50 Hz can be used for the primary supply. The adjustment of
the power supply to the primary supply voltage occurs automatically.
The power supply of the DC version satisfies the requirements of the European
standard EN ETS 300 132-2 with a possible range of input voltage of
40.5V - 72V DC. The adjustment of the power supply to the primary supply voltage
occurs automatically.
Permitted range of the input voltage
(AC version):
85 - 264 VAC (50 Hz - 60 Hz)
Permitted range of the input voltage
(DC version):
40.5 - 72 VDC in accordance with
ETS 300 132-2
In the case of reverse poling of the interface for the power supply on the FCU
(control card) there is no possibility of normal operation. Reverse poling is non-
destructive.


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6.2 Modem Interface
The accommodation of two FSA-PLUS Switchers is carried out by means of a
permanent modem connection. This connection is a necessary condition for the
operation of the device. A breakdown in the modem connection causes a specifi-
cally targeted alarm to be set off. In this case a reverse switching of the FSA-
PLUS Switcher is not possible.
Transmission rate 1200 baud/s, half duplex FSK Modem in accordance with
ITU-T V.23
Maximum distance of up to 10 km in the case of standard lines of telecommu-
nication with the following characteristics (typical values)
Line diameter
in mm
Direct current loop
resistance in
/ km
Line capacity in
nF / km
Maximum possible
distance in km
0.4
270
50
8
0.5
190
50
9
0.6
120
50
10
Monitoring of the communication: start bit; stop bit; check total, time out moni-
toring
Satisfies the requirements of ETSI TBR 15 (Jan. 97) and the Dutch regula-
tion T14-01
Control of the communication is carried out by means of the polling principle. The
external FSA-PLUS Switcher is the master with regard to communication.
With every polling cycle, the external FSA-PLUS Switcher informs the central
FSA-PLUS Switcher of the switch status and the alarm status.
The required connection and the monitoring of the switching operation is carried
out by the central FSA-PLUS Switcher.

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6.3 Interface for Line Measurements (Double Mode only) or for an External
Switch (Double Mode or Single Mode)
Interfaces for line measurements (double mode only)
The interfaces for line measurements are monitored by an in-circuit copper pair for
a specified minimum insulation resistance (a-wire to b-wire and a-wire or b-wire to
earth) and for a possible opening of the circuit.
Two interfaces are required in order to perform this measurement which is carried
out by an FSA-PLUS Switcher continuously. One interface forms the source with
the appropriate evaluation and the other interface forms a necessary terminal
(see picture2, Chapter 4.1).
The guaranteed values are as follows:
Threshold value for the insulation,
measured a-wire to b-wire and a-wire or
b-wire to earth
Guaranteed values over the whole
specified temperature range
Minimum possible insulation value,
which still does not trigger any alarm
(Lower values must have triggered off
an alarm)
RInsulation_min > 1.5 M
Notice: The max. permitted loop resistance
of the cable is 3 k 
Maximum insulation value at which an
alarm is triggered
(Higher insulation values must reset an
alarm and/or not trigger any alarm off)
RInsulation_max < 5 M
Values for the loop resistance of
the cable
Guaranteed values over the whole
specified temperature range
Highest switching threshold:
Higher values must trigger an alarm
RLoop< 100 k
Lowest switching threshold:
Lower values must reset an alarm
and/or must not trigger any alarm off
Rseries > 3 k

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Interface for an external switch (double or single mode)
Values for the loop resistance of the
cable
Guaranteed values over the whole
specified temperature range
Highest switching threshold:
Higher values must lead to the switch-
ing from SIDE1 over to SIDE2
(External switch is open)
RLoop_SIDE2 300k
Lowest switching threshold:
Lower values must lead to the switching
from SIDE2 over to SIDE1
(External switch is closed)
RLoop_SIDE1 3 k
The function of the external switch is assigned in the following manner:
External switch closed

Switch on SIDE1
External switch open

Switch on SIDE2
6.4 Interface for an Alarm Contact
The interface for the alarm consists of galvanic separated relay contacts. The con-
tacts have the function of a three-way switch.
The assignation of the contacts is as follows:
Pin 5
Pin 4Pin 6
Alarm
Pin 5
Pin 4Pin 6
Normalbetrieb
Alarm Normal Operation
Picture 5: Assignment of the alarm contacts

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7 Considerations for Use
7.1 Operation and Connecting Plans for the Control Card (FCU)
7.1.1 Path Switching (Double Mode)
With path switching, all the cables are switched together from one bunch of trunks
over to another bunch of trunks. Two FSA-PLUS Switchers are required to per-
form this reverse switching and these must be installed on each end of the bunch
of trunks. The accommodation of the FSA-PLUS Switcher is carried out by means
of a permanent modem connection.
In the case of automatic reverse switching, a copper pair is applied as the switch
criterion, on which the insulation and the loop resistance are monitored. In the
event of falling short of the defined thresholds (see Page 15) it is automatically
switched from the main path (SIDE1) over to the reserve path (SIDE2).
In double mode, after a connection of the central FSA-PLUS Switcher, a compari-
son is carried out of the number of recognised moving cards of the two FSA-PLUS
Switcher. In the event of unequal numbers of recognised moving cards, this gives
rise to an alarm and signalling (flashing of LED 3,4,8 or 9). A switch operation is
not possible then.
An automatic switching over to SIDE2 is a once-through operation, independent of
the monitored line data. This switch behaviour will prevent any multiple switching
over from taking place. In addition, it is therefore possible to carry out the switch
back from SIDE2 to SIDE1 to a self-defined time.
In the event that the FSA-PLUS Switcher has automatically switched to SIDE2
and a failure of the distribution voltage or the operating voltage +15V subse-
quently occurs, this switch status is filed in an internal memory and after restora-
tion of the voltage is used once again as switch status. An undesired switch back
on SIDE1 is therefore prevented.
For a direct switch back onto SIDE1 involves two possibilities. The first possibility
is an application of key S3 (see Page 20) of the external FSA-PLUS Switcher.
When the key is pressed, the LED 4 lights up in acknowledgement. This LED, in
the case of the external FSA-PLUS Switcher, has no other function.
LOCAL
SWITCH
SIDE 1 SIDE 2
EXTERNAL SWITCHER
CENTRAL SWITCHER
FCU
Top view
16
XS1
1
Front view
S2
XS4
S3
14
S1
Reset
Buttom
ON
OFF
14
DIP-switch for the
configuration mode
1
24
3
56
78
910 11
12
Picture 6: Front view of the function control unit (FCU)
The second possibility is a reversed configuration of the central FSA-PLUS
Switcher in manual mode with the subsequent reversed configuration once again
in automatic mode. In this case, the internal memory is erased. The system there-


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fore sets itself automatically at normal status SIDE1 (assuming that the lines are
perfect).
The installation of the lines required for automatic reverse switching should be car-
ried out in accordance with the following installation plan.
The main path (path in the event of perfect operation) is installed on SIDE1.
The reserve path (reserve path) is installed on SIDE2.
The modem connection must be installed with the bunch of trunks from SIDE2
in order to guarantee the communication even in the event of damage to the
cable of the main path.
The monitoring of the cable in the main path must be carried out by means of
the external FSA-PLUS Switcher. In the event of a failure of the lines in the re-
serve path (SIDE2), it is then possible to determine whether the failure is
caused by the modem connection or the lines.
Control card from
the central
FSA-PLUS Switcher
Distance
max. 10 km
Monitoring of the line
quality
(Main path, SIDE1)
Control card from
external
FSA-PLUS Switcher
2
2
Pin2
Pin3
Supply
Pin2
Pin3
Pin15
2
Pin11
Pin12 Pin8 Pin9
Pin16
(+)
(-)
Earth Pin14
This line must be placed in
the main path (SIDE1)
Pin14 (-)
(+)
Pin15
Pin16
Pin11
Pin12
Pin8
Pin9
Pin5
Pin4
Contact for an urgent
combined alarm
Pin6
This line must be placed in
the reserve path (SIDE2)
Monitoring of the line
quality
(Reserve path, SIDE2)
Supply
Earth
Permanent
modem
connection
Picture 7: Automatic path switching

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Distance
max. 10 km
Control card from
the external
FSA-PLUS Switcher
Pin2
Pin3 Pin2
Pin3
Pin15
2
Pin8
Pin9
Pin16
(+)
(-)
Pin14
This line must be placed in the
reverse path (SIDE2)
Pin14 Earth
(-)
(+)
Pin15
Pin16 Supply
2
Connect here the external
switch (if used)
Pin5
Pin4
Contact foran
central
alarm Pin6
Permanent
modem
connection
Control card from
the central
FSA-PLUS Switcher
Supply
Earth
Picture 8: Manual path switching
7.1.2 Single Mode
Control card of the
FSA-PLUS Switcher
Supply Pin15
Pin8
Pin9
Pin16
(+)
(-)
Earth Pin14
2
Connect here the
external switch
(if used)
Pin5
Pin4
Contact for
the central
alarm
Pin6
Picture 9: Single mode

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7.2 Overview of the Position of Operational Controls and Connecting Ele-
ments on the Control Card (FCU)
SIDE 1
SIDE 2
Local
switch
SIDE 1
SIDE 2
EXTERNAL
SWITCHER
SIDE 1
SIDE 2
CENTRAL
SWITCHER
URGENT
ALARM
AUTO
MODE
Cable error
FCU
top view
16
XS1
1
S2
XS4
S3
1
4
S1
Reset
button
ON
OFF
1
4
DIP-switch
Configuration
Supply failure
Cable error
Modem signal received (flashes)
No modem signal received (lights up permanently)
Modem signal received (flashes)
Supply failure
1
16
No modem signal received (lights up permanently)
Picture 10: Control card (FCU)
Name
Description of Function
S1
Dip switch for setting the configuration
S2
Local switch
S3
Push button for the specifically targeted switch back on SIDE1 (only
external switch in automatic path switching mode)
XS1
Connector plug of the control card for the external interfaces
(This is connected with a 16-pin PCB connecting block)
XS4
Interface between the control card and the moving cards