Interfaces - ABB REF 542plus Technical Reference Manual

1MRS755859
6.5.
Multifunction Protection and Switchbay Control
Unit
Technical Reference Manual

Interfaces

HMI control unit
Serial infrared (IrDa)/electrical RS-232 interface to a PC (at the front)
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Electrically isolated RS-485 standard interface to the base unit (at the rear)
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Electrical standard interface RJ-45 for Modbus TCP and/or the embedded WEB
*
server
Power supply
*
Base unit
Electrically isolated RS-485 standard interface to the HMI
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RS-232 standard service interface (service port for updating configuration and
*
firmware)
Power supply
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0/4 ... 20 mA analog output module (optional)
Four output channels 0 to 20 mA or 4 to 20 mA, freely configurable.
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4 ... 20 mA analog input module (optional)
Six input channels 4 ... 20 mA
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Communication to a station automation system (optional)
SPA, optical plastic fiber interface with snap-in type connector; or glass fiber
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(multi mode) with F-SMA or ST connectors
LON (according to ABB LAG1.4), glass fiber (multi mode) optical interface
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with ST connectors
IEC 60870-5-103 with extension according to VDN guidelines for controlling,
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glass fiber (multi-mode) optical interface with ST connectors
Modbus RTU/SPAbus electrical interface with two galvanically insulated SPA-
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bus RS-485 ports or optical interface with four standard ST connectors for glass
fiber (multi-mode)
IEC 61850 electrical interface with two RJ45 connector or optical interface with
*
two pair LC connector for glass fiber (50/125 µm multi-mode fiber)
REF 542plus REF 542plus
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