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GE Multilin UR-9EH Universal Relay Analog Output Card

The GE Multilin UR-9EH, also cataloged as the UR-9EH Analog Output Module, operates as a dedicated hardware component for converting internal digital system parameters into precise analog signals within Universal Relay platforms.

Hardware Specifications

Parameter Specification
Model UR-9EH
Brand GE Multilin (General Electric)
Origin USA
Weight 0.45 kg
Dimensions 170 mm x 105 mm x 32 mm
Operating Temp -40 to +85 deg C
Power Consumption 4.5 W maximum from backplane
Module Type Analog Output Module (AOM)
Output Channels 8 Independent Channels
D/A Resolution 16-Bit
Output Ranges 4-20 mA (Standard), 0-10 VDC (Configurable)
Accuracy +/-0.2% of Full Scale
Isolation 2k Vrms galvanic isolation (Outputs to Backplane)
Chassis Compatibility Standard 6U UR Chassis (Plug-in slot)

Industrial Control and Backplane Communication Characteristics

The module interfaces directly with the proprietary high-speed UR internal backplane bus, utilizing deterministic synchronization protocols to update all eight analog channels within millisecond control loops. This backplane bus communication velocity allows the host protection relay processor to transmit real-time calculated parameters without introduces processing latencies. Firmware flash compatibility checks execute automatically upon chassis power-up, verifying that the module microcode matches the central processor unit core operating system version to prevent channel configuration mismatches.

Frequently Asked Questions

Q: Does the module support hot-swap replacement while the Universal Relay chassis is energized?

A: No, hot-swapping is not permitted. The UR chassis must be completely de-energized before removing or inserting the module to prevent transient electrical damage to the backplane communication bus.

Q: Can the output channels be configured with mixed ranges simultaneously?

A: Yes, each of the eight independent channels is individually software-configured via the EnerVista software setup to operate either as a 4-20 mA current loop or a 0-10 VDC voltage output interface.

Field Installation Guidelines

  • Ensure the UR chassis is completely isolated from all primary power sources and external current transformer inputs prior to hardware insertion.
  • Align the module circuit board edges with the designated 6U chassis slot plastic guide rails, sliding the assembly inward until the rear connectors fully seat into the backplane.
  • Tighten the front panel upper and lower captive retaining screws to secure mechanical grounding stability and prevent vibration-induced displacement.
  • Terminate all analog output signal wiring using shielded twisted-pair cables, bonding the overall cable shield to the designated chassis ground bus at the enclosure entry point.
  • Maintain separation between low-voltage analog signal pathways and high-voltage AC control or trip circuits inside the panel layout to minimize induced electromagnetic interference.

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