Omron E5CJ-R2 User Manual

43
Phenomenon CountermeasureProbable cause
The process value is abnormal or not
obtained.
The input polarity is wrong or the
connection is wrong.
Properly wire the terminals.
The input-type setting is incorrect. Properly set the input with the
input-type selector.
No compensating lead wires are used
for the extension of the thermocouple.
Use proper compensating lead wires.
The thermocouple and E5J is
connected via wires other than proper
lead wires.
Use a dedicated thermocouple
connector. If a metal material different
from the thermocouple is used to
connect the thermocouple and E5J,
a temperature error may result.
The sensor is broken or
short-circuited.
Use a good sensor.
The E5J is influenced by noise or
other induction.
Separate the input wires as far as
possible from the origin of the noise.
°C is used instead of °F or vice versa. Use the proper temperature unit.
The process value is shifted because
the input shift function is used.
Set the input shift value to 0.
No control output is obtained. No Control Output Unit is connected. Connect a Control Output Unit (sold
separately).
Event input 2 of the E5J is set to
STOP.
Open event input 2 and set the E5J
to RUN.
The heater burnout detecting function
is abnormal.
No Current Transformer (CT) is used. Properly connect the dedicated
E54-CT1 or E54-CT3 (sold
separately) to the E5J.
The heater burnout alarm value is not
proper.
Set the proper heater burnout alarm
value taking into consideration the
fluctuation of the heater supply
voltage and measurement error.
The heater is turned ON or OFF with
an output other than the control
output.
Use the control output. Heater burnout
detection synchronizes with the
control output. Any other output
cannot be used.
Simple Method to Determine Temperature Controller Error or Sensor Error
When Thermocouple is Used If the temperature displayed by the E5J is close to the room temperature when
the input terminals of the
E5J is short-circuited, the E5J deemed to be normal
and it is presumed that the sensor is broken, short-circuited, or incorrectly wired.
If the temperature displayed by the
E5J is close to 0.0°C when a resistor with a
resistance of approximately 100 Ω is inserted between terminals A and –B of the
E5J and terminals +B and –B of the E5J are short-circuited, the E5J
deemed to be normal and it is presumed that the sensor is broken, short-cir-
cuited, or incorrectly wired.
When Platinum Resistance
Thermometer is Used
Troubleshooting
Section 6-2

Omron E5CJ-R2 Specifications

General

Brand	Omron
Model	E5CJ-R2
Category	Temperature Controller
Language	English