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RS 232 to RS 485 Converter

The Sparr CONV 485 is a Converter, which converts the RS 232 Serial Port Signals to RS 485 or RS 422 signals for long distance and for interfacing devices supporting RS 485 or RS 422 Ports.

The Sparr CONV 485 is also available in PCB form for System Integrators, to incorporate the PCB in their equipment, so that they can provide RS 485 signal compatibility. The Power to this Board can be given in DC Voltage from their equipment itself.

The Converter is populated with Surface Mount Components for good reliability and to reduce the size. At the same time, it is equipped with very good and reliable Isolation to Data signals and Power protection to Serial side by way of 1500 V protection from any high voltage appearing in the RS 485 side which may be vulnerable to High Voltage exposure.

Features and specifications
Max no of drivers 32
Max no of receivers 32
Max cable length (RS485) 1220 m
Max cable length (RS232) 15 m
Baud range (RS232 limited) 300 to 38400 baud, Can supports higher speed for shorter distances.
LED Indication Transmit Data, Received Data and Power ON
Power supply Powered from External Adaptor with 9 VDC or 9V AC output at 300 mA.
Signal Isolation Provides optical isolation to Signals
Power Isolation 1500 V isolation between the RS 485 and RS 232 signals thereby protecting the high value serial device.
Dimensions 120 mm (L) x 65mm (W) x 30 mm (H)
Temperature Range -40 to 60°C (5 to 95% humidity)
Connection details
2 Wire and 4 Wire: The Sparr CONV 485 supports operation in both 2-wire and 4-wire mode to cater RS 485 and RS 422 type devices. In 2-wire mode, the unit is intelligent enough to enable the transmitter and disable or tri-state its Receiver input based on Transmit Signal.
The unit also supports legacy systems, which can provide Request To Send (RTS) to control and enable the Transmission.
    In 4-wire mode of operation, the unit uses separate channels or pairs for Transmission and Reception there by achieving one master polling multiple slaves and slaves responding in a full duplex mode.
Jumpers are provided in the units for selecting the 2 wires and 4-wire mode.
Ordering information
Model Description
CONV 485 RS 232 to RS 422/485 Converter in Metal Enclosure
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