E5CS-R1KJX-F Omron

What does this temperature controller do?

It is a compact panel-mount temperature controller that measures temperature from a sensor input and switches a relay control output to maintain a setpoint. It supports either ON/OFF control or PID control, with automatic tuning of the proportional band.

Which sensor types can be connected to this controller?

This variant is designed for thermocouple inputs and accepts Type K (CA) and Type J (IC). Use the correct thermocouple compensating cable to minimise measurement errors.

What power supply does it require?

It is powered from 100 to 240 VAC, 50/60 Hz (and operates within 85% to 110% of the rated voltage). Typical power consumption is approximately 7 VA.

What type of control output does it provide?

It provides a contact (relay) control output: SPDT relay, rated up to 3 A at 250 VAC for a resistive load. Output state changes have an indicated response time of about 2 seconds.

Does it include an alarm output, and how is it rated?

Yes. It includes a relay alarm output (SPST-NO), rated up to 1 A at 250 VAC for a resistive load. Alarm behaviour is selectable from multiple alarm modes via an internal rotary selector.

Can it run PID control, and does it auto-tune?

Yes. PID control can be selected via an internal DIP switch, and the controller automatically tunes the proportional band within a defined range based on the process response.

How do I select the temperature range and engineering units?

Temperature range is selected using an internal rotary DIP switch. For dual-scale ranges, a separate internal switch selects whether the display shows °C or °F.

What are the display characteristics and accuracy?

The controller uses an easy-to-read LED display (11 mm character height). Indication accuracy is specified as ±0.5% of full scale (±1 digit maximum). The display range is limited by the selected input and temperature range.

What panel cutout and mounting size does it use?

It is a 1/16 DIN panel-mount unit (48 mm x 48 mm front). The panel cutout is 45 mm x 45 mm (+0.6/−0). It is typically mounted with a supplied panel mounting adapter, and it fits recommended panel thicknesses around 1 to 4 mm.

Can I protect setpoint changes from being altered?

Yes. Key protection can be enabled using an internal function selector switch. When protection is enabled, a hidden front-panel key (used together with the Up/Down keys) is required to change values.

What do the error messages mean if a sensor fails?

If the sensor is broken, shorted, or the temperature goes far outside the selected range, the display may show messages such as “FFF” or “---” (sometimes blinking). Depending on the configuration and operating direction (heating/cooling), the controller will force the control output to a defined ON/OFF state.

Can the displayed temperature be offset to match my process reading?

Yes. An input shift (offset) function can be enabled via an internal switch, allowing fine adjustment of the displayed temperature and the resulting control point without changing the setpoint. The offset remains effective until it is reset.

What are the environmental operating limits?

Typical operating ambient temperature is −10°C to +55°C, with humidity in the 35% to 85% RH range (non-condensing). For best results, avoid locations with heavy vibration, corrosive gases, or high electrical noise.

Are there accessories for added front-panel protection or replacement mounting hardware?

Yes. Common accessories include a protective front cover (Y92A-48) and a replacement panel mounting adapter (Y92F-30). These can be useful where the front panel needs additional protection or when mounting hardware is missing.