Via binary inputs, all kinds of binary signals of switchgear/ protection scheme (for example tripping commands, switch position signal, fault and status indications) are securely detected. This information can directly be distributed at this SICAM I/O-Unit via contacts, or be transmitted via communication links to further SICAM I/O-Units or to automation systems.

Secured telegrams are used for the communication via Ethernet or serial connections. The parameter setting of the SICAM I/OUnit is simply carried out with a standard Web browser at the PC which is connected by the Ethernet interface.

The SICAM I/O-Unit can be set as:6I/O mirror:

• Point-to-point transfer of binary signals between two SICAM I/O-Units via Ethernet or a serial connection. Signal inputs and outputs assignable by the user.
• I/O expansion:
  • Expansion of substation controllers by binary inputs and outputs using standard protocols.
  • Detection and output of binary states by substation controllers via standard protocols Modbus RTU, Modbus TCP or IEC 61850.
  • Extension for protection devices of the compact class SIPROTEC 7SJ80 and 7SK80 via connection on their low-cost Ethernet interface (LEM).

Function Overview

• Binary inputs
  • 6 ruggedized EMC
  • Hardened binary inputs
  • Pickup voltage threshold settable to DC 19 V, DC 88 V or DC 176 V for different station battery voltages
• Binary outputs
  • 6 command relay outputs
  • Safe state of contacts after loss of connection settable by the user
• Signal/Alarm outputs
  • 4 LED
• Wide-range power supply
  • 24 – DC 250 V ± 20 % and AC 100 - 230 V 45 – 65 Hz
• Electrical RJ45 Ethernet interface
  • Cascading many devices without additional costs by the use of the integrated switch
• Serial fiber-optic interface (optional)
  • ST-connector, 820 nm for multi-mode fi ber 62.5 /125 Ојm, typical range 2000 m using fi ber 62.5 Ојm /125 Ојm,
    baud rate 1.2 kBit/s - 187.5 kBit/s settable per software
• Serial RS485-interface (optional)
  • Sub-D plug, 9-pole female
• Protocols, communication
  • MODBUS TCP or MODBUS RTU for connection to a substation controller
  • MODBUS UDP for point-to-point connections between two SICAM I/O-Units
  • SNTP for time synchronization
  • IEC 61850 (GOOSE, MMS, Reporting)
• Housing
  • IP20 rail mounting
• Standards
  • CE, UL, IEC 60255, IEEE 61000
• Environmental conditions
  • EMC hardened binary I/O for substation environment
  • Extended high temperature range up to 85 °C (16 h/day).