The C90Plus is a powerful logic controller designed for the unique automation requirements of industrial and utility power systems. The C90Plus provides unmatched logic processing ability combined with a powerful math engine with deterministic execution of logic equations regardless of the configuration of the number of lines of logic. The C90Plus features an advanced automation logic engine, bay protection & control, high accuracy digital fault recording, comprehensive communications and local HMI capabilities.
Simplified powerful programmable automation controller with math engine
Deterministic execution of automation logic
Local HMI providing real time bay control with configurable single line diagrams
High-end load shedding blocks
Intuitive large front panel color HMI
Configurable alarm annunciator
High-end fault and disturbance recording
Reduced installation space requirements through compact design
Phasor Measurement Unit (IEEEC37.118)
Custom protection and bay interlocking schemes
Bay controller for common bus-bar arrangements
Substation alarm concentrator & controller
Custom bus transfer schemes
Control for up to 6 breakers and 30 disconnect switches
Standalone breaker fail & reclosing for dual-breaker arrangements
Dedicated protection logic at 1 msec execution rate
Dedicated HMI for breaker and disconnect control
Synchrocheck and line check function for multi-breaker arrangements
Single/three pole autorelcosing
Dedicated automation controller with 4000 lines of logic at a deterministic 50 msec execution rate
Powerful math, control and Boolean operators to support the automation logic engine
Dual breaker failure protection
10 stages of under/over frequency protection for load shedding
4 stages of rate-of-change-of frequency for load shedding
6 stages of under-voltage elements for load shedding
The C90Plus is a powerful logic controller specifically designed for use in substation environments and for the unique automation requirements of industrial and utility power systems. The C90Plus provides unmatched logic processing ability combined with a powerful math engine with deterministic execution of logic equations regardless of the configuration of the number of lines of logic.
The C90Plus provides the tools and functionality necessary for creating customized automation and control schemes that include:
Advanced bay control and interlocking
Breaker monitoring and control
Automatic Bus Transfer schemes
Load shedding and load restoration schemes
CT and VT monitoring
Metering - current, voltage, frequency, power, energy and phasors as per IEEE C37.118
Transient recorder - 256 samples/cycle, 30 sec of storage capacity
Disturbance recorder – 1 sample/cycle, 5 min of storage capacity
Event recorder - 8000 time tagged events, with 0.5 ms scan of digital inputs
Comprehensive display of metering, phasors, maintenance and fault information in the front panel
The C90Plus includes high accuracy metering and recording for all AC signals. Voltage, current, and power metering are built into the relay as a standard feature. Current and voltage parameters are available as total RMS magnitude, and as fundamental frequency magnitude and angle.
Digital fault recorder summary with the latest information on the events, faults, transients and disturbances.
Real time display of the fundamental phasors of voltage and current in the front panel HMI.
The C90Plus incorporates advanced automation features including powerful FlexLogic™ (user programmable logic) independent for protection and automation schemes. Combined with the communication capabilities, C90Plus automation features far surpass what is found in average relays with programmable logic. The C90Plus integrates seamlessly with UR and URPlus relays for complete system protection including interlocking
The C90Plus supports an advanced automation logic engine that supports Boolean operators, analog comparisons, and advanced mathematical operations.
The D90Plus provides for secure remote data and engineering access, making it easy and flexible to use and integrate into new and existing infrastructures. 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 availability of three independently configurable Ethernet option provides the means of creating fault tolerant communication architectures in an easy, cost-effective manner. The D90Plus supports the most popular industry standard protocols enabling easy, direct integration into SCADA systems.
IEC 61850
DNP 3.0
Ethernet Global Data (EGD)
IEC 60870-5-104
Modbus RTU, Modbus TCP/IP
The EnerVista™ Suite is an industry-leading set of software programs that simplifies every aspect of using the D90Plus relay. The EnerVista™ suite provides all the tools to monitor the status of your the protected asset, maintain the relay, and integrate information measured by the D90Plus into DCS or SCADA monitoring systems. Convenient COMTRADE and Sequence of Events viewers are an integral part of the URPlus Setup software included with every URPlus relay, to carry out postmortem event analysis to ensure proper protection system operation. Learn More
Access Control
Multilin devices and relays are designed with simple but powerful security to enable reliability and compliance for virtually any project or implementation. With support for multi-level permissions and multi-factor supervisory controls, Multilin devices can help you manage the integrity of your system during commissioning, testing, implementation, and beyond. The UR and URPlus Families provide separate authentication for settings and commands to the system. In addition, as discrete authentications for local and remote access, it also provides a supervisory control factor that can lock or unlock a device for configuration changes and other modifications.
Intrusion Detection
Multilin’s family of protection and control products can also help enable your security perimeter and intrusion detection programs. By providing essential alarming and logging of critical events, Multilin devices can help you detect potential breaches within your system and allow you to respond quickly and effectively. Specifically, unsuccessful access attempts are logged, alarmed, and lead to potential attackers being locked out. This ensures the reliability of your system during questionable activity.control factor that can lock or unlock a device for configuration changes and other modifications.
Auditing and Reporting
With the Security Audit Trail reporting feature and support for Event logging of key
activities such as configuration changes, Multilin devices can help ensure device and
protection system integrity, and perform forensic auditing of activities and changes
for compliance.
Expanded Bay Control Capability
- Up to six circuit breakers and thirty individual disconnect switches can be controlled via a single C90Plus, all addressable from standard communication protocols like IEC 61850 and DNP 3.0
- The C90Plus now features six individually configurable single-line diagrams on the optional user control HMI for custom control and visualization of up to six bays
- Interface with an even greater number of signals with new high-density I/O options. The C90Plus can collect up to 115 individual status inputs, or control up to 60 individual outputs
Software Ease-of-Use:
- EnerVista Viewpoint Engineer now available for graphical configuration of Protection and Automation FlexLogic™
Security Enhancements - Enabling NERC CIP compliance:
- Enabling NERC/CIP compliance
- Dual Permission access requiring live permission from both the user and from - SCADA operators before settings can be changed or commands can be given to the relay
- Remote and Local Setting and Control passwords
- Configurable lockout responses to unsuccessful password access attempts
- Successful password access logged in Events Record
- Logging of user commands in the Security Audit Trail Report - creates a record and sequence of events log for troubleshooting and security auditing
Protection & Control 
