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Multilin C30

Controller System

The C30 controller system is a programmable logic controller for performing substation or bay automation that can also be used for expanding the I/O capability of protection devices and replacing Sequence of Event (SOE) recorders. The C30 provides fast deterministic execution of programmable logic with I/O capabilities far above an average protection relay.

Key Benefits

  • Powerful and deterministic programmable logic suitable for creating most customized automated substation control solutions

  • Advanced IEC 61850 Ed. 1 and Ed. 2 certified implementation, complete settings via SCL files and IEC 61850-9-2 process bus solution ensures interoperability, device managing optimization and reduced cost of ownership

  • Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation, which enables wide area protection and control applications

  • Reduced bay or station wiring through the use of high-speed peer-to-peer communication for sending and accepting control commands from other relays

  • Modular hardware architecture allowing for flexibility in the I/O configuration to support most bay management applications

  • Robust network security enabling Critical Infrastructure Protection through user command logging, and dual permission access control

  • Supports latest edition of waveform capture (COMTRADE 2013) simplifying fault records management

  • Application flexibility with multiple I/O options including high density I/O, programmable logic, modularity, and specific customization

  • An integrated large, full colour display, provides real-time visualization and control of the protected bay, via a bay mimic as well as annunciator functionality and graphical visualization of phasors


  • Bay control and substation automation

  • Programmable logic control

  • UR I/O expansion

  • Sequence of Events (SOE) recorder replacement

Key Features

Protection and Control

  • Programmable logic, timers, counters

  • Distributed logic, remote I/O expansion

  • User-definable protection elements

  • Up to 96 digital input and 64 digital outputs

  • Transducer I/Os (RTD, dcmA)

The C30 controller system is a substation hardened device designed to perform substation control logic that can also expand the I/O capability of protection devices and replace existing Sequence of Events (SOE) Recorders. The C30 provides fast and deterministic execution of programmable logic with I/O capabilities far above an average protection relay. Graphical programming tools, supported by a library of logic operators, make the C30 simple to use and configure. Using high-speed peer-to-peer communications for inter-device messaging, the C30 can also accept signals and commands from other protection and control devices at a fraction of the cost of hard-wiring these signals. Control, automation, I/O expansion and data gathering are ideally suited for the C30 in the following applications:

  • Bay control

  • Substation automation

  • Remote I/O

Monitoring & Metering

  • Oscillography – analog and digital parameters at 64 samples/cycle

  • Event Recorder - 1024 time tagged events with 0.5ms scan of digital inputs

  • Data Logger - 16 channels with sampling rate up to 1 sample / cycle

  • Setting for security audit trails for tracking changes to C30 configurations

  • Monitoring and metering

Monitoring & Diagnostic

The C30 provides high resolution measuring of the status of external devices wired to its contact inputs. The changing of a contact input status can be measured and time-stamped with a 0.5ms resolution, making the C30 ideal for bay or substation Sequence of Events recording.

Advanced Automation

The C30 incorporates advanced automation features including powerful FlexLogic™ programmable logic, peer-to-peer communications and SCADA capabilities that far surpass what is found in the average PLC or controller. The C30 integrates seamlessly with other UR relays to extend the I/O capabilities and perform complete bay management and control.

Key Features


  • Complete IEC 61850 Process Bus solution providing resource optimization and minimizing total P & C life cycle costs

  • Three independent 100Mbps Ethernet ports enable purpose specific LAN support that eliminates latency effect of heavy traffic protocols on mission critical communication services

  • Embedded IEEE 1588 time synch protocol support eliminates dedicated IRIG-B wiring requirements for IEDs

  • Direct I/O secures high-speed exchange of binary data between URs

  • Increase network availability by reducing failover time to zero through IEC62439-3 "PRP" support

Advanced Communication

The C30 provides advanced communications technologies for remote data and engineering access, making it easy and flexible to use and integrate into new and existing infrastructures. Direct support for fiber optic Ethernet provides high-bandwidth communications allowing for low-latency controls and high-speed file transfers of relay fault and event record information. The available three independent and redundant Ethernet options provide the means to create fault tolerant communication architectures in an easy, cost-effective manner.
The C30 supports the most popular industry standard protocols enabling easy, direct integration into DCS and SCADA systems.

The B30 supports the most popular industry standard protocols enabling easy, direct integration into DCS and SCADA systems.

  • IEC 61850 Ed. 1/Ed. 2 with 61850-9-2 (Process Bus) and 61850-90-5 (synchrophasors) support

  • DNP 3.0 (serial & TCP/IP)

  • Ethernet Global Data (EGD)

  • IEC 60870-5-103 and IEC 60870-5-104

  • Modbus RTU, Modbus TCP/IP

  • HTTP, TFTP, SFTP and MMS file transfer

  • Redundant SNTP and IEEE 1588 for time synchronization

  • PRP as per IEC 62439-3

  • Supports Routable GOOSE (R-GOOSE)

c30 monitoring.jpg

The C30 is a complete solution for controlling and monitoring substation devices and can easily be connected directly into DCS or SCADA monitoring and control systems like Viewpoint Monitoring as shown.

c30 flexlogic.jpg

FlexLogic™ allows for the creation of customized C30 substation control schemes that include receiving interlock and lockout functionality using locally measured inputs, and receiving information received from external devices through communications.

C30 Brochure

C30 Instruction Manual

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