369-LO-R-0-0-E-0-E GE Digital Motor Management Relay

• Brand
  GE
• Model
  369‑LO‑R‑0‑0‑E‑0‑E
• Product Name
  369 Series Digital Motor Management Relay
• Place of Origin
  United States
• HS Code
  85364900
• Dimensions
  296 mm height × 107 mm width × 205 mm depth
• Weight
  85364900
• Operating Temperature
  ‑20 °C to +60 °C
• Storage Temperature
  ‑40 °C to +85 °C
• Power Supply
  20‑60 VDC
• Warranty
  1 year
• Product Status
  NEW BRAND

GE 369-LO-R-0-0-E-0-E Input  and Output
Input

Control power input: Adapts to wide-range power supply of 20–60VDC or 20–48VAC, matching the LO power module specification of the device.

Analog current input: Collects three-phase operating current and ground fault current signals from external current transformers (CT), compatible with 1A/5A secondary standard CT signals.

Temperature input: Receives temperature measurement signals of motor windings and bearings from multiple 3-wire RTD sensors to realize real-time temperature monitoring.

Digital input: Optically isolated dry contact inputs acquire external equipment status signals, including circuit breaker position, remote reset commands and auxiliary interlock signals.

Communication input: Receives remote configuration parameters and control instructions from the upper monitoring system through front RS232 and rear RS485 Modbus RTU communication interfaces.

Manual operation input: The front panel keypad supports on-site personnel to complete local parameter configuration, function setting and manual operation commands.

Output

Relay contact output: Equipped with latching main trip relay, dedicated alarm relay and two programmable auxiliary relays, used for motor fault tripping, on-site alarm prompting and system interlock control.

Analog transducer output: Built-in configurable analog output channel, supporting 0–1mA, 0–20mA and 4–20mA signal output, which transmits on-site operating parameters to external monitoring devices.

Communication output: Uploads real-time operating data, alarm information, fault trip records and motor operation logs to DCS or upper monitoring host via serial communication interfaces.

Visual display output: The front LCD screen and status LEDs intuitively output real-time measurement data, operating status, alarm prompts and fault codes for local observation.

Event log output: Automatically stores time-stamped fault trip records, alarm events and device self-test data, providing accurate data support for subsequent fault analysis and equipment maintenance.

GE 369-LO-R-0-0-E-0-E Operation Steps

Carry out comprehensive power-off inspection prior to power-on. Verify correct termination for CT, RTD, digital input and output wiring. Confirm the control power complies with the LO variant specification of 20-60VDC / 20-48VAC, and ensure no short-circuit exists within CT secondary loops.

Supply control power to the relay. Observe front-panel LED indicators and LCD screen, and wait for the completion of the self-diagnosis sequence. Make certain that no hardware fault alarms are generated after power-up.

Enter parameter configuration either through the front-panel keypad, or by using EnerVista 369 Setup software via the front RS232 port or rear communication interface. Enter motor nameplate data including full-load current, service factor, start-up time and thermal capacity. Configure CT ratio, RTD sensor type and protection thresholds for overload, stall, ground-fault, phase-loss and other protective functions. Adjust communication parameters if remote monitoring is needed.

Store all configured setpoints to the relay’s non-volatile memory. Run static tests while the motor remains de-energized. Activate simulation functions to validate proper response of trip relays, alarm relays and digital I/O, and confirm protection logic aligns with project design.

Close the motor circuit breaker and place the relay into operational service. Monitor real-time measurement data on the LCD display, check three-phase current, temperature and status feedback, and verify displayed readings match actual site conditions.

Execute reset procedures upon alarm or trip events. Latch-off status can be cleared via the front-panel reset button, dedicated remote-reset digital input, or reset commands issued from host software. Reset commands will be denied if the internal motor thermal model indicates an over-temperature condition.

For unplanned tripping incidents, access event records and motor health reports for fault troubleshooting. Analyze trip root cause, time stamps and thermal accumulation data to identify failure sources.

Implement periodic routine maintenance. Regularly retrieve operating parameters and event logs. Modify protection setpoints only when equipment is powered down. Download updated configurations and perform function validation after every parameter change.