Complete integrated protection and
management of medium and large motors
The Multilin™ 469 Motor Protection System, a member of the SR family of relays, provides protection,
control, simplified configuration and advanced communications in a cost effective industry leading
draw-out construction. Designed for medium voltage motors, the 469 delivers advanced protection with
customizable overload curves and single CT differential protection for added flexibility. The 469 also
provides simplified configuration using the Motor Settings Auto-Configurator, providing a quick and easy
set-up of motor parameters. Coupled with advanced protection and diagnostics, the 469 provides users
the flexibility of multiple communication protocols allowing integration into new and existing control
networks.
Key Benefits
• Comprehensive motor protection plus voltage dependant overload curves, torque metering and
protection, broken rotor bar protection
• Most advanced thermal model - Including multiple RTD inputs for stator thermal protection
• Minimize replacement time - Draw-out construction
• Complete asset monitoring - Temperature, Analog I/O, full metering including demand & energy
• Improve uptime of auxiliary equipment - Through I/O monitoring
• Reduce troubleshooting time and maintenance costs - Event reports, waveform capture, data logger
• Built in simulation functions simplify testing and commissioning
• Cost Effective Access to information - Through standard RS232 & RS485 serial ports, and optional
Ethernet and DeviceNet Ports
• Field upgradable firmware and settings
• Optional Conformal coating for exposure to chemically corrosive or humid environments
Applications
• Protection and Management of three phase medium and large horsepower motors and driven
equipment, including high inertia, two speed and reduced-voltage start motors

Protection and Control
• Thermal model biased with RTD and negative
sequence current feedback
• Start supervision and inhibit
• Mechanical jam
• Voltage compensated acceleration
• Undervoltage, overvoltage
• Underfrequency
• Stator differential protection
• Thermal overload
• Overtemperature protection
• Phase and ground overcurrent
• Current unbalance
• Power elements
• Torque protection
• Dual overload curves for 2 speed motors
• Reduced voltage starting control
Communications
• Multiple Ports - 10baseT Ethernet, RS485,
RS232, RS422, DeviceNet
• Multiple Protocols - Modbus RTU, Modbus TCP/
IP, DeviceNet
Monitoring & Metering
• A, V, W, var, VA, PF, Hz, Wh, varh, demand
• Torque, temperature (12 RTDs)
• Event recorder
• Oscillography & Data Logger (trending)
• Statistical information & learned motor data
EnerVista Software
• State of the art software for configuration and
commissioning Multilin products
• Document and software archiving toolset to
ensure reference material and device utilities
are up-to-date
• EnerVista™ Integrator providing easy
integration of data in the 469 into new or
existing monitoring and control systems

Dielectric
voltage
withstand:
EN60255-5
Impulse
voltage
withstand:
EN60255-5
Damped
Oscillatory:
IEC 61000-4-18 / IEC 60255-22-1
Electrostatic
Discharge:
EN61000-4-2 / IEC 60255-22-2
RF immunity: EN61000-4-3 / IEC 60255-22-3
Fast Transient
Disturbance:
EN61000-4-4 / IEC 60255-22-4
Surge
Immunity:
EN61000-4-5 / IEC 60255-22-5
Conducted RF
Immunity:
EN61000-4-6 / IEC 60255-22-6
Radiated &
Conducted
Emissions:
CISPR11 / CISPR22 / IEC 60255-25
Sinusoidal
Vibration:
IEC 60255-21-1
Voltage Dip &
interruption:
IEC 61000-4-11
Ingress
Protection:
IEC 60529
Environmental
(Cold):
IEC 60068-2-1
Environmental
(Dry heat):
IEC 60068-2-2
ESD: IEEE / ANSIC37.90.3
Safety: UL508 / UL C22.2-14 / UL1053
CERTIFICATION
ISO: Manufactured under an ISO9001 registered
system.
CE: EN60255-5 / EN60255-27 / EN61010-1 /
EN50263
cULus: UL508 / UL1053 / C22.2.No 14