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C11 - RS232 to RS485 Converter (Isolation on RS232 Side)
C11 - RS232 to RS485 Converter (Isolation on RS232 Side)
- Industrial converter with 3kV galvanic isolation protecting the RS232 port (PC/PLC side) from field surges.
Product Description
The Redisage C11 is designed for applications where the protection of the master device (e.g., a PC or an expensive PLC) is the priority. This model features 3000 VDC galvanic isolation on the RS232 side. The RS485 output shares the ground potential with the power supply.
This configuration is ideal when the converter is powered from the same source as field devices, but the control unit requires strict separation. Key features:
• Isolation: RS232 Side (Separates PC/PLC from the rest)
• Interface: RS232 (Screw terminal) to RS485
• Speed: Transparent up to 115200 bps
• Control: Hardware ADDC (No RTS control needed)
• Power Supply: 12-30 VDC
Technical Documentation
Datasheet (DTR):
⬇ Download C11 Datasheet
Knowledge Base:
🔗 doc.redisage.com
Brand
Symbol
C11
Producer code
5903949781038
Series
Warranty
Main data
Power voltage
12-30 V/DC
Galvanic isolation
RS232 3 kV/DC
Power connector
Screw terminal
Work temperature range
-40°C to +75°C
Safety measures
ESD 4 kV / 8 kV
Burst
Surge
RF
LED
Tx
Rx
Power
Serial Ports
Number of ports
2
Port type
1x RS232
1x RS485
Connector type
Screw terminal
Transmission speed
115200 bps
Data bits
7
8
Stop bits
1
2
Controll Bits
none
odd
even
Enclosure
Mounting
DIN Rail
Width in standard modules S (17.5 mm)
1M
Width
17.5 mm
Length
98 mm
Height
56.4 mm
Ingress Protection Code
IP20
Standards and Certifications
Declarations of Conformity
CE
RoHS
EMC
LVD
Norms
61000-6-2 - Immunity standard for industrial environments
61000-6-4 - Emission standard for industrial environments
About C11
C11 – Protecting the RS232 Interface
The C11 Converter bridges the gap between the short-range RS232 standard and the long-range RS485 bus. Its unique feature is the placement of the isolation barrier on the RS232 side. This means the RS232 port is electrically floating relative to the power supply and the RS485 output.
This design is specifically chosen for scenarios where the field bus (RS485) and the power supply share a common ground (common in cabinet wiring), but the computer or controller connected via RS232 must be protected from noise and ground faults occurring on the factory floor. The device supports baud rates from 300 to 115200 bps with automatic flow control.
Technical Specifications:- Isolation Type: RS232 Side (3kV).
- Range: Extends communication up to 1200m (RS485 side).
- Connectors: Robust screw terminals for secure wiring.
- Diagnostics: Tx/Rx LEDs for easy troubleshooting.
For more details on pinout and configuration, download the datasheet from our docs portal.
3 Year Warranty
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