Transio A52/53 is a smart RS-232 to RS-422/485 bi-directional converter that comes with all of the great technical specs that Moxa is well known for. This includes data direction control built into the hardware for both RS-422 and RS-485 interfaces, LED indicators for power and signal states, and surge protection and isolation protection. These last two features take care of some of the major problems faced by serial communication connections in industrial environments.

Serial Connection Problems in Industrial Environments

Serial communication and reliability can be adversely affected in a hazardous industrial environment. The wiring associated with serial communication devices could be surrounded by power lines, motors, or equipment that produces static electricity. If this is the case, the serial devices could be damaged by sudden surge waves produced by this type of equipment. In this situation, surge protection that uses TVSS (Transient Voltage Surge Supression) is the solution.

When two serial devices are directly connected, but separated by a long distance, the unbalanced ground voltage could cause serious damage. Unbalanced ground voltage between two serial ports forms a "ground loop," introducing a large current between the two pieces of serial equipment. In fact, the current could be so lare as to damage the equipment beyond repair. In this situation, the solution is to use Isolation Protection to completely isolate both communication ports.

What is Surge Protection?

Surges are high amplitude pulses of only several millionths of a second in duration. They can be caused by heavy-duty equipment, power lines, short circuits, or large motors. A surge suppressor has the ability to effectively absorb the high energy instantly, thus preventing the connected devices from damage.

What is Isolation Protection?

ADDC™ (Automatic Data Direction Control) RS-485 data control Auto baudrate sensing RS-422 hardware flow control: CTS, RTS signals LED indicators for power and signal states RS-485 multidrop operation, up to 32 nodes

Surge protection, 25 KV ESD

2 KV isolation protection (A53)

Built-in 120 Ω termination resistors

Communications

RS-232 Signals Tx, Rx, DTR, DSR, RTS, CTS, DCD, GND (RJ45) RS-422/485 Supports RS-422, 2-wire RS-485 (DIP Switch selectable) Supports 4-wire RS-422, up to 10 nodes, 1.2 km with RTS, CTS Supports 2-wire RS-485, up to 32 nodes, 1.2 km RS-485 Data Direction Control ADDC™ Surge Protection 25 KV ESD Isolation 2 KV (A53), Power/Signal

Environmental

Operating Temperature 0 to 55 °C Storage Temperature -20 to 75 °C Humidity 5 to 95% RH

Power

Input Power Voltage 9 to 30 VDC, 350 mA Overcurrent Protection Protection against 2 signals shorted together Power Consumption A52: 170 mA @ 9V A53: 285 mA @ 9V

Mechanical

Dimensions (W x D x H) 90 x 60 x 21 mm Case ABS Weight 85 ± 5 g

Regulatory Approvals

Transio_A5253 CE Class A, FCC Class A

Warranty

Transio_A5253 5 years