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Serial Redundancy Switch

Communication Redundancy has taken roots. There is a felt need to communicate SCADA PC / HMI / DCS etc with Redundant Controllers / PLC / RTU’s / IED devices etc.
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Isolated Serial Redundancy Switch

Isolated Serial Redundancy Switch
 
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Product Details:
Model NumberSAM 201I
Dimensions36(w) x 128(d) x 159(h) mm
Humidity10 to 90 % RH (non condensing)
Power Supply230 VAC (Range 90VAC to 270VAC),24 V or 48 V DC options are also available
Operating Temperature0 to 55 Degrees C
Power ConsumptionLess than 3 watt
BrandSan Telequip
Communication Ports3 RS232,8 signals
Input ConnectorDB9 Female
Output ConnectorDB9 Male
Power Connector3 Pin screw type Terminals
Baud RateUp to 115kbps
Isolation3 KV
IndicationsTX,RX,LED's for the 3 Ports
Mode SelectionAuto / Manual through Membrane Key
Time Out1 sec (default)
MountingPanel Mounting or DIN Rail
ProtocolsMODBUS,ASCII,IEC 101,IEC 103 etc

It can enable 2 SCADA Masters to talk to a common RTU or a single SCADA master to talk to Redundant RTU’s on the field. It can also be connected through PLCC modems. During Power On, whichever Master sends a query, is connected to the Output (Slave). In case your Master Port fails or Cable from your Primary Master to our Port has failed then SAM senses “No Communication” between the Primary Master & the Slave & seamlessly switches communication to your Secondary Master. Time Out is selectable from 1 Sec. to 1 min. This timeout is factory set. SAM will wait up to the Time Out in order to establish other connection. Manual selection of the Primary & Secondary Master is also provided for easy diagnostics. It is expected that during the failure of Primary Master connection, your Secondary master will start sending the queries. Alternatively, the Switch can also be used for communication between 2 Slaves & 1 Master. The query from a Master can be broadcasted to both the Slaves but only 1 Slave need to respond at a time. This is in cases where the Slaves are Redundant.

Additional Information:
  • Item Code: SAM-201I
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Serial Redundancy Switch

Serial Redundancy Switch
 
Ask For Price
Product Price:  Get Latest Price

Product Details:
BrandSan Telequip
Model NumberSRS 201
Operating Humidity10 to 90 % RH (non condensing)
Operating Temperature0 to 55 Degrees C
PortsCOMMON, LINK1, LINK2
Power Supply230 VAC (Range 110 VAC to 240 VAC)
ProtocolMODBUS, ASCII, IEC 101, IEC 103
Weight500 gm
Mode of OperationAuto / Manual
Signals3 signals for RS232 & 2 or 4 for RS485/ RS422
Time Out1 sec (default)
Baud RateUp to 115kbps
Dimensions170 x 122 x 33 mm
MountingTable Top
Power ConsumptionLess than 3 W

Offering communication Redundancy has taken roots. There is a felt need to communicate SCADA PC / HMI / DCS etc with Redundant Controllers / PLC / RTU’s / IED devices etc. SRS has been designed to cater to this requirement of the industry. It is Protocol independent & all the 3 Ports are RS232 / RS485 / RS422 configurable.

Applications:
It can enable 2 SCADA Masters to talk to a common RTU or a single SCADA master to talk to Redundant RTU’s on the field. It can also be connected through a PLCC modems etc During Power On, whichever Master sends a query, is connected to the Output ( Slave ). In case your Master Port fails or Cable from your Primary Master to our Port has failed then SRS senses “No Communication” between the Primary Master & the Slave & switches communication to your Secondary Master. Time Out is selectable from 1 Sec. to 9 Sec. SRS will wait up to the Time Out in order to establish other connection. Manual selection of the ports is provided for easy diagnostics. It is expected that during this time your Auto Redundancy logic will also start sending queries from the Secondary master.

Alternatively, the Switch can also be used :
  • For communication between 2 Slaves & 1 Master. The query from a Master can be broadcasted to both the Slaves but only 1 Slave need to respond at a time. This is in cases where the Slaves cannot be multi-dropped
  • To create cable level redundancy for devices having only a Single Serial port

Additional Information:
  • Item Code: SRS-201
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