San Telequip SC12 FS SHI User manual

San Telequip Private Limited.,
504 & 505 Deron Heights, Baner Road
Pune 411045, India
Phone : [phone] Connecting. Converting. Leading!
email : [e-mail]
Document Name: User Manual for Self-Healing Serial to Fiber Converter Model SC12 FS SHI
The SC12FS SHI is used to transmit the RS232 / RS485 / RS422 signal by the fiber optic ring network at a high rate,
over long distances, offering immunity to various types of noise and increasing the dependability of data.
The communications system model of SC12FS SHI is one Master to multiple Slaves.
It is easy to structure a network of Star, Chain and Loop type.
It is a Self-Healing product. When any of Slave nodes fails or the Power is cut off or there is a break in fiber etc,
the communication shifts to the alternate loop & resumes normal communication, through the normal loop, once
the fault is restored.
For forming a Ring, you need at least 3 converters else it is a Point to Point communication
Specifications :
Ports
Fiber * 2
: Full Duplex
Code error rate
: below 10-9
Wavelength
: SM
:1310 / 1550 nm, MM
:1310 / 850 nm
Cable
: SM
: 09/125 m
: MM : 62.5/125 m or 50/125 m
Fiber Connectors
: ST, SC or FC. Select any one.
Distance
: SM: 20km, MM: 2 to 5km. Longer distances are available as options in SM
Tx Power
: -8.5dbm
Sensitivity
: -35 dbm
Code
: HDB3
Serial * 1
: RS232/RS485/RS422
Serial Port Connector
: 7 pin screw type connectors
Baud Rate
: 300bps to 115.2Kbps
Power
Power supply
: Options: DC 12 ( 9-18V), 24 ( 18 to 36V), 48 ( 36 to 72V), 110-370V
AC 110 to 270V
: Dual Redundancy for DC 12, 24 & 48V DC Inputs
Power
: <2W
Relay
: Alarm Relay: 24V DC 1 Amp
Mechanicals
Dimensions : 144mm × 97mm ×33mm
Weight : 500 gm
Mounting : DIN Rail
Operating Conditions
Working temperature : -20 to +75 °C.
Storage temperature : -40 to +85 °C.
Relative humidity : 95% non-condensation
Protection
MTBF : Better than 100,000 hours
ESD Protection : 15 KV ESD Surge Protection for all signals (Optional)
Isolation Protection : 2.5KV Optical Isolation for Power and Signals (Optional)
Surge Protection : 600W on RS485 lines

San Telequip Private Limited.,
504 & 505 Deron Heights, Baner Road
Pune 411045, India
Phone : [phone] Connecting. Converting. Leading!
email : [e-mail]
DIP Switch & LED’s details :
DIP Switch Details:
1. DIP switch 1: In the entire loop, 1 Converter has to be set as Master & other
Converters as Slaves. Select Master with MAIN as ON and select Slave with
SUB ON.
2. DIP switch 2: To add 120Ω termination resister across RS485 interface /Port.
LED Details:
10 LED’s Indication on Front Facia
LED Name
LED Colour
ON/OFF
LED FUNCATION
PWR1
( Primary Power )
Red
ON
SC12FS SHI is Powered ON
OFF
No Power to SC12FS SHI
PWR 2
( Secondary Power )
Red
ON
SC12FS SHI is Powered ON
OFF
No Power to SC12FS SHI
SUB
Green
ON
SUB ( Slave) mode selected
MAIN
Red
ON
MAIN ( Master) mode selected
LOOPB
Green
ON
Fiber signal is detected with another SC12FS SHI
T/RXB
Green
Blink
LOOPA
Green
ON
Fiber signal is detected with another SC12FS SHI
T/RXA
Green
Blink
RXD
Green
Blink
Data Received from Fiber Port
TXD
Green
Blink
Data Received from RS232 /RS485/RS422
Power Supply connection :
PIN
1
2
3
4
5
6
Signal
V1+
V1-
RY+
RY-
V2+
V2-
DC12V
DC24V DC48V
Signal type
DC110-370V
Alarm Relay
DC12V DC24V DC48V
AC85-265V
Serial Port Pin Details
RS-232/485/422 terminal connection
PIN
1
2
3
4
5
6
7
Signal
TX+(A+)
TX-(B-)
RX+
RX-
GND
TXD
RXD
Signal Type
RS-422/RS-485
RS-232
Connections:
RS232 Connection: Connect the TX of the converter to the RX of the external equipment
and RX to the TX, GND to the GND
Signal of SC12FS SHI
Will Connect to
TXD
RX
RXD
TX
GND
GND
RS485/422 connection: RS485 / 422 is auto selectable. Pin 1 (T+) and Pin 2 (T-) are used for RS485, and pin
1,2,3,4 are used for RS422.
DIP NUMBER
ON/OFF
FUNCTION
1
ON
Master (MAIN)
OFF
Slave (SUB)
2
ON
With 120 Ω Terminations
OFF
Without 120 Ω Terminations

San Telequip Private Limited.,
504 & 505 Deron Heights, Baner Road
Pune 411045, India
Phone : [phone] Connecting. Converting. Leading!
email : [e-mail]
For RS485 2 Wire
Important: It is necessary to add a matching resistance of 120 Ohm both at the start & at the end of the RS485
loop. (By turning on the switch 2)
Fiber connection: To construct a self-heal loop, the fiber network must be constructed as A
to B and B to A, TX to RX and RX to TX. In a self-heal loop network of 2 fibers there can be only one master
station but several slave stations. Following is a sample connection.
Power:
Options: DC 12, 24, 48,110-370V, AC 85 to 265V
Dual Redundant (DC 12, 24, 48).
Please be very careful about the polarity.
Alarm Relay: During a supply failure the Relay with a load capacity of 1A
(24VDC) can be used to generate an Alarm. Relay is normally off.
Dimensions
Dimensions : 144mm × 97mm ×33mm
Mounting : DIN Rail
Signal of SC12FS SHI
Will Connect to
TX+ ( A+)
RX+ of your device
TX-( B- )
RX- of your device
RX+
TX+ of your device
RX-
TX- of your device
Signal of SC12FS SHI
Will Connect to
TX+ ( A+)
TX+ of your device
TX-( B- )
TX- of your device

San Telequip Private Limited.,
504 & 505 Deron Heights, Baner Road
Pune 411045, India
Phone : [phone] Connecting. Converting. Leading!
email : [e-mail]
CONNECTION ARCHITECTURES