Technical Specifications

FAQ

1. What is the GE Multilin UR 6UH Digital I/O Module used for?
The GE Multilin UR 6UH is a digital I/O module designed for installation in GE Multilin Universal Relay systems. It expands the relay’s digital signal interface by providing four digital inputs and six Form-A relay outputs. The module can be used for monitoring auxiliary equipment, collecting breaker and switch status signals, generating alarms, and controlling external devices within protection and automation systems.

2. How many digital inputs and outputs does the UR 6UH provide?
The UR 6UH provides four digital inputs and six Form-A outputs. The four digital inputs are used to acquire binary field signals such as auxiliary contacts, breaker position feedback and switch status. The six Form-A outputs provide normally open relay contacts that can be assigned to control, alarm, trip, interlocking or other digital functions through the host UR relay configuration.

3. What type of outputs are available on the UR 6UH?
The module provides six Form-A relay outputs without output monitoring. Form-A contacts are normally open and close when the corresponding relay logic activates the output. This configuration is useful for conventional control and signaling circuits where a dry relay contact is required. The actual load and circuit design should be checked against the applicable relay and field-device requirements before commissioning.

4. Can the UR 6UH be used for circuit breaker control?
Yes. The UR 6UH can be used for breaker control and other auxiliary control functions when properly configured in the host Universal Relay. Digital inputs can receive breaker auxiliary contact feedback, while Form-A outputs can be assigned to trip, close, alarm or interlocking functions. The final control behavior depends on the relay’s protection logic, FlexLogic configuration and the external control circuit.

5. How is the GE UR 6UH configured?
The UR 6UH can be configured as part of the host Universal Relay using EnerVista UR software. Configuration can also be performed through the relay’s local keypad and LCD interface. During commissioning, each input and output should be assigned to the correct logical function, and the configured I/O status should be compared with the actual field devices to ensure that the control logic operates as intended.

6. What should be checked before installing a UR 6UH module?
Before installation, verify that the UR 6UH is the correct I/O option for the target GE Multilin Universal Relay and that the relay has the appropriate module position available. Power should be isolated before inserting or removing the module. After installation, inspect the module connection, field wiring, input common connections and Form-A output terminals. The I/O configuration should also be reviewed before the system is returned to service.

7. How can a digital input problem on the UR 6UH be diagnosed?
Begin by checking the external switch, auxiliary contact and associated wiring. Confirm that the expected field signal reaches the correct input terminal and that the common connection is secure. Then use the UR relay interface or EnerVista UR software to observe the corresponding input status. If the external circuit is correct but the input status does not change, check the module seating, configuration and backplane connection before considering module replacement.

8. What should be checked if a UR 6UH Form-A output does not operate?
First verify that the relay logic conditions required to activate the output have been satisfied and that the output has been assigned to the correct function. Next inspect the external control power, wiring, terminal connections and connected load. Because the UR 6UH Form-A outputs do not provide internal output monitoring, an external measurement may be necessary to confirm the actual relay contact state. If the logic and external circuit are both correct but the output still fails to operate, the module and its connection to the UR system should be inspected for a possible hardware fault.