Description
Key Technical Specifications
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Model Number: 5X00501G01
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Manufacturer: Emerson (formerly Westinghouse)
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Function: 8-channel isolated analog I/O – software-selectable as AI or AO
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Input/Output Ranges: 4-20 mA, 0-20 mA, ±10 V, 0-10 V, ±5 V, 1-5 V (per channel)
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Resolution: 16-bit (14-bit ENOB)
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Accuracy: ±0.05 % full scale typical
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Sampling Rate: 250 kHz aggregate burst, 1 kHz per channel continuous
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Isolation: 2 kV channel-to-bus; 500 V channel-to-channel
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Communication: Dual 10/100 Mbps Ethernet (Modbus-TCP) + RS-485 (Modbus-RTU)
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Power Supply: 24 VDC (±10 %) or 220 VAC module power (jumper-selectable)
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Operating Temperature: –20 °C…+70 °C
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Protection Degree: IP20 (module), IP67 field connector option
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Dimensions / Weight: 178 × 73 × 28 mm, 0.25 kg typical
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Status: Factory discontinued – new & tested spares available
WESTINGHOUSE 1C31234G01
Field Application & Problem Solved
In the field the biggest headache is landing eight analog signals—RTDs, pressure transmitters, servo feedback—without running individual 4-20 mA loops all the way back to the main rack. The 5X00501G01 solves that by living in a remote node: it excites the sensor, digitizes at 16-bit resolution, and shoves the data onto the Ovation bus over a single Ethernet or RS-485 pair. You’ll typically find one per remote pump house or cooling-tower skid on Frame-7/9 peakers—swap time is under two minutes with the unit on turning gear. Core value: it collapses eight isolated ADCs, anti-alias filters, surge clamps, and dual-protocol comms into one 0.25 kg module you can bolt to the skid without pulling new cable.
In the field the biggest headache is landing eight analog signals—RTDs, pressure transmitters, servo feedback—without running individual 4-20 mA loops all the way back to the main rack. The 5X00501G01 solves that by living in a remote node: it excites the sensor, digitizes at 16-bit resolution, and shoves the data onto the Ovation bus over a single Ethernet or RS-485 pair. You’ll typically find one per remote pump house or cooling-tower skid on Frame-7/9 peakers—swap time is under two minutes with the unit on turning gear. Core value: it collapses eight isolated ADCs, anti-alias filters, surge clamps, and dual-protocol comms into one 0.25 kg module you can bolt to the skid without pulling new cable.
Installation & Maintenance Pitfalls (Expert Tips)
Loop Power Comes from the Card – Don’t Double-Source
The module sources 24 V compliance on current outputs. If your positioner also sources power you’ll fight the regulator and the output drifts. Break the loop at the junction box and verify only one power source is active.
The module sources 24 V compliance on current outputs. If your positioner also sources power you’ll fight the regulator and the output drifts. Break the loop at the junction box and verify only one power source is active.
Ethernet & RS-485 Are Live at 24 V – Use Isolated Laptop
The RJ-45 and RS-485 ports are referenced to 24 VDC. If you plug in a grounded laptop you’ll short the shield and fry the PHY. Use a battery laptop or an isolated USB-Ethernet dongle.
The RJ-45 and RS-485 ports are referenced to 24 VDC. If you plug in a grounded laptop you’ll short the shield and fry the PHY. Use a battery laptop or an isolated USB-Ethernet dongle.
Sampling Rate Must Match Loop – Don’t Over-Scan
Default is 1 kHz per channel. If you set 250 kHz burst on a slow temperature loop you’ll alias noise and chase ±0.05 % drift. Use ToolboxST to set 10 Hz for RTDs and 1 kHz for servo pressure.
Default is 1 kHz per channel. If you set 250 kHz burst on a slow temperature loop you’ll alias noise and chase ±0.05 % drift. Use ToolboxST to set 10 Hz for RTDs and 1 kHz for servo pressure.
Spare Lead-Time Is 6-8 Weeks – Keep One on the Shelf
Factory stock is gone; new & tested spares are available but not overnight. If you crack a layer or burn the 24 V rail you’ll be down until the part arrives—keep one in stores or you’ll discover the weakness during the next grid event.
Factory stock is gone; new & tested spares are available but not overnight. If you crack a layer or burn the 24 V rail you’ll be down until the part arrives—keep one in stores or you’ll discover the weakness during the next grid event.
WESTINGHOUSE 1C31234G01
Technical Deep Dive & Overview
Internally the module is a 16-bit SAR ADC bolted to a 2 kV isolation barrier. The front end conditions the raw signal (current or voltage), the DSP calculates engineering units every 2 ms, and the dual-protocol chip pushes the data over Ethernet or RS-485. Lose the 24 V rail and the whole module goes dark; lose a single channel and the CPU throws “AO FLT” for that channel only. No firmware to reload—pure hardware—so you can hot-swap it: unplug the old module, land the sensor and bus cables exactly where they came from, snap the RJ-45 in, and the DCS sees all eight channels again in under ten seconds.
Internally the module is a 16-bit SAR ADC bolted to a 2 kV isolation barrier. The front end conditions the raw signal (current or voltage), the DSP calculates engineering units every 2 ms, and the dual-protocol chip pushes the data over Ethernet or RS-485. Lose the 24 V rail and the whole module goes dark; lose a single channel and the CPU throws “AO FLT” for that channel only. No firmware to reload—pure hardware—so you can hot-swap it: unplug the old module, land the sensor and bus cables exactly where they came from, snap the RJ-45 in, and the DCS sees all eight channels again in under ten seconds.
