Characteristics - Omron EJ1 User Manual

Specifications
Detection is also sometimes not possible if a contactor is used for the control output.
(2) A heater short is not detected if the control output (heating) OFF time is 100 ms or less.
Detection is also sometimes not possible if a contactor is used for the control output.

Characteristics

Indication accuracy Thermocouple input/
platinum resistance
thermometer input
Analog input
Heater burnout CT input ( 5% FS) 1 digit max.
Hysteresis
Proportional band (P)
Integral time (I)
Derivative time (D)
Control period
Manual reset value
Alarm output setting range
Sampling period
Insulation resistance
Dielectric strength
Vibration resistance
Shock resistance
Degree of protection
Memory protection
Weight
Note (3) W:
PLII:
K (30)
V1.2
The indication accuracy of K, T and N thermocouples at a temperature of 100°C or less, and U and
L thermocouples at any temperature is 2°C 1 digit maximum.
The indication accuracy of B thermocouples at a temperature of 400°C or less is unrestricted.
The indication accuracy of R and S thermocouples at a temperature of 200°C or less is 3°C 1 digit
max.
(4) The decimal point position is determined by the sensor selection. In this case, however, the 0 (****)
decimal point position setting will be treated as a setting of 1 (***.*).
• Influence of Temperature or Voltage
R, S, B, and W thermocouple inputs:
Thermocouple input (K(30))
Other thermocouple inputs:
Platinum resistance thermometer inputs: ( 1% of PV or 2°C, whichever is greater) 1 digit max.
Analog input:
Conditions:
Temperature range: 10°C to 23°C to 55°C, Voltage range: 15% to +10%
( 0.5% of indication value (PV) or 1°C, which-
ever is greater) 1 digit max. (See note 3.)
( 0.5% FS) 1 digit max.
0.1 to 999.9 EU (in units of 0.1 EU) (See note 4.) ---
0.1 to 999.9 EU (in units of 0.1 EU) (See note 4.) ---
0 to 3,999 s (in units of 0.1 s)
0.0 to 999.9 s (in units of 1 s)
0.5 s, 1 to 99 s (in units of 1 s)
0.0% to 100.0% (in units of 0.1%)
1,999 to 9,999 (decimal point position depends
on input type)
250 ms
20 M min. (at 500 VDC)
600 VAC, 50/60 Hz for 1 min between current-carrying terminals of different polarity
10 to 55 Hz, 20 m/s
2
150 m/s
Rear case: IP20, Terminal section: IP00
EEPROM (non-volatile memory) (number of writes: 100,000)
180 g
( 0.5% of indication value (PV) or 3°C, whichever is greater) 1 digit max.
( 0.5% of indication value (PV) or 2°C, whichever is greater) 1 digit max.
: ( 0.5% of indication value (PV) or 1°C, whichever is greater) 10 digit max.
However, up to 100°C is 2°C, 10 digits max.
:
V1.2
TC4/TC2
2
for 2 hours each in X, Y, and Z directions
max., 3 times each in 6 directions (on X, Y, and Z axes)
( 1% of PV or 10°C, whichever is greater) 1 digit max.
( 1% of PV or 4°C, whichever is greater) 10 digit max.
However, up to 100°C is 10°C.
( 1% of PV or 4°C, whichever is greater) 1 digit max.
But, K Sensors: 100°C max. or 10°C max.
1% FS or 1 digit, whichever is greater
Appendix
HFU EDU
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Case: IP20
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160 g 70 g
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