Temperature Sensing Errors - Omron E5ZE Operation Manual

Temperature Sensing Errors

Probable cause
Settings
Selector settings for the input type of temperature
sensor are incorrect.
Celsius-Fahrenheit designation of the E5ZE is
incorrect.
The process value appears to be incorrect due to
the input shift setting.
E5ZE FUNCTION switch is not set correctly for
the E5ZD-SDL Setting Display Unit connected to
the E5ZE.
Data setting unit is incorrect.
Program of the host device is incorrect.
Operation Temperature sensor input terminals of the E5ZE
thermocouple input model have been
short-circuited.
Temperature sensor connected to the E5ZE has
been replaced or the switch or selector settings of
the E5ZE have been changed while the power is
ON.
Simple Method for Checking Temperature Sensors
1, 2, 3...
1, 2, 3...
52
Platinum Resistance Thermometer
1. Connect a 100-Ω resistor between the A and B temperature sensor input
terminals and short-circuit the B terminals.
2. If the temperature sensed by the E5ZE is 0.0°C or 32.0°F, the E5ZE is oper-
ating normally.
Thermocouple
1. Short-circuit the temperature sensor input terminals of the E5ZE.
2. If the E5ZE senses the temperature of the terminal block of the E5ZE, the
E5ZE is operating normally.
Remedy
Correct the INPUT selector setting.
Correct the FUNCTION switch setting.
Set the input shift to 0.0.
Correct the FUNCTION switch setting.
Change the program of the host device.
Change the program of the host device.
Connect a thermocouple to the temperature
sensor input terminals.
Turn OFF the power to the E5ZE, and then turn
ON again.
Section 4-3