Omron E5GN-R1TC Digital Temperature Controller: Complete Guide and Technical Specifications

13. januar 2026

Pre-shipment Inspection Record: This document details the visual and technical inspection of the Omron E5GN-R1TC Digital Temperature Controller: Complete Guide and Technical Specifications. All product photos and testing videos below are original materials captured first-hand by the Koeed technical team in our warehouse prior to dispatch.

What is the Omron E5GN-R1TC?

The E5GN-R1TC is Omron's slim-line digital temperature controller in the vertical 1/16-DIN format — the half-width body (48 × 24 mm face) that packs a full PID temperature loop into panels too narrow for a square controller. The strings decode cleanly: R1TC is the relay-output build (OUTPUT 1 A) with the thermocouple input and the CT1 over-current detection alarm the manual covers — a current-transformer input that watches the heater circuit for element faults. Supply is 24 V AC/DC (4 VA / 2.5 W, 50/60 Hz), the multi-range input accepts the standard thermocouple classes, and the nine spring-clamp terminals on the base take the wiring without screwdrivers. Approvals: UL US Listed (Process Control Equipment, 40LM), CE. The carton reads TYPE E5GN-R1TC, TEMPERATURE CONTROLLER, TEMP MULTI-RANGE, VOLTS AC/DC24, LOT NO. 0352MR, MADE IN JAPAN. One unit, 99% condition in original packaging with the Japanese instruction sheet, 1-year warranty as recorded at intake. All 8 photos and 1 video below show this exact controller.

3 min readContent reviewed 8 October 2026

Part details

E5GN-R1TC, as printed on the box and case
Field	Value
Model	Omron E5GN-R1TC
Type	Slim-line digital temperature controller, vertical 1/16 DIN (48 × 24 mm)
Input	Thermocouple, TEMP MULTI-RANGE
Supply	AC/DC 24 V, 50/60 Hz, 4 VA / 2.5 W (terminal strip legend)
Outputs	Control relay OUTPUT 1 A; alarm (LARM) 1 A / 250 VAC~; CT1 over-current detection input (per the Japanese manual)
Terminals	Nine spring-clamp positions (1-9) with the wiring diagram printed on the base
Front	Single display over three keys; CMWW STOP OUT legends
Approvals	UL US Listed (Process Control Equipment, 40LM), CE, See Manual
Lot	0352MR, barcode 4 536854 620539
Origin	Made in Japan — OMRON Corporation
Included	Japanese instruction sheet (CT1 over-current detection alarm)
Quantity	1 unit, 99% condition in original packaging; 1-year warranty as recorded at intake
Shipping weight	0.2 kg as recorded

Scroll sideways to see the full table.

Values are read from the carton label, the side UL label and the photographed terminal strip in the photo set.

The slim controller, and why CT1 matters

Machine builders reach for the E5GN when the panel has a 24 V control supply and a slot that a square controller will not fit: the vertical half-DIN body drops into a 45 × 22 mm cutout, the spring-clamp terminals take the wiring in seconds, and the single display over three keys carries the whole operator interface. The R1TC build is the heater-loop specialist of the family — relay output for the contactor or small heater group, thermocouple input across the standard classes, and the CT1 function that gives this slim controller a capability most of its size class lacks: a current-transformer input that watches the heater current itself. Wire the CT around the heater feed and the controller detects a burned-out element or a stuck contactor — the two heater faults a temperature loop cannot see — and raises the alarm output on its own. That fault supervision is why the Japanese instruction sheet shipped with this unit covers the CT1 over-current detection specifically. The UL process-control listing covers the compliance file, the 24 V AC/DC supply rides either a control transformer or a DC rail, and the lot 0352MR traces the unit to its Japanese production run. 99% condition in the original box: the drop-in replacement for an E5GN-format loop, or the controller for a new slim-panel build.