Applications
The TC1520 RS-422/RS-485 Asynchronous Fiber
Optic Modem are often used to link various process control systems in
manufacturing plants, refineries, etc. It is also used to connect Remote
Terminal Units to SCADA hosts or controllers in Utility environments.
The TC1520 work well in harsh environments because of their fiber optic
benefits. This results in a simple and low cost solution to
electrical/radio frequency interference and ground loop problems. Data
security is also assured because fiber optic cable is virtually impossible
to tap without detection.
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Description
Versatile and
competitively priced, the TC1520 fiber optic modem supports RS-422 and
2-wire or 4-wire RS-485 interfaces. It transmits asynchronous data at
speeds up to 500 Kbps.*
Because the TC1520 can be multi-dropped on the electrical side (RS-485),
it is ideal for poll and response applications such as SCADA and Process
Control. It will support one Remote Terminal Unit via the RS-422
interface.
Six visual indicators are provided for troubleshooting: Power, RS-485,
Driver Mode, Receive Data, Transmit Data, Optic Sync. Four DIP switches
are provided for RS-485 Transition Time and Termination Resistor settings.
The TC1520 is compatible with all popular types and sizes of multimode
(850nm/1300nm) or single mode (1300/1550nm) fiber optic cable. Fiber
optic connectors are ST or FC. The electrical connectors are terminal
blocks. Power is 12VDC or 115/230VAC with an external power cube. An
extreme temperature version (-20°C to 70°C), Model TC1520T, is also
available.
*Contact factory for higher requirements
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Technical Specifications
|
Data Rates |
|
Async |
up to 500 Kbps |
|
Optical |
|
Transmitter |
LED, ELED |
|
Receiver |
PIN Diode |
|
Wavelength |
850nm, 1300nm Multimode
1300nm, 1550nm Single Mode |
|
Fiber Optic
Connectors |
ST or FC |
Loss Budget*
(850nm, 1300nm,
1550nm) |
Multimode (62.5/125µm): 15dB
Single Mode (9/125µm): 15dB
|
|
Electrical
|
|
Interface |
(DCE) RS-422 , OR
RS-485 (2 - 4 - wire) |
|
Connector |
Terminal Blocks |
|
System
|
|
Bit Error Rate |
1 in 109 or better |
* Contact factory for higher requirements |
|
|
Visual
Indicators |
LED, PWR, TD, RD, RS-485, Drive,
Mode, Optic Sync |
|
Power
|
|
Standard |
12VDC @ 200mA |
|
Optional |
115/230VAC
(with external power cube) |
|
Temperature
|
|
Operating |
-10° to 50°C |
|
Hi-Temp (optional) |
-20° to 70°C |
|
Storage |
-40° to 90°C |
|
Humidity |
95% non-condensing |
|
Physical (Wallmount
Base) |
|
Height |
(2.24 cm) 0.9" |
|
Width |
(10.16 cm) 4.0" |
|
Depth |
(7.87 cm) 3.1" |
|
Weight |
(93.6 gm) 3.3 oz. |
|
|
