Omron EJ1 User Manual

189
Specifications Appendix
Characteristics
Note (3) W: (±0.5% of indication value (PV) or ±3°C, whichever is greater) ±1 digit max.
PLII: (±0.5% of indication value (PV) or ±2°C, whichever is greater) ±1 digit max.
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. With analog inputs, the decimal
point position is determined by the Decimal Point Position parameter setting. In this case, however,
the 0 (****) decimal point position setting will be treated as a setting of 1 (***.*).
TC4/TC2 HFU EDU
Indication accuracy Thermocouple input/
platinum resistance
thermometer input
(±0.5% of indication value (PV) or ±1°C,
whichever is greater) ±1 digit max. (See note
3.)
--- ---
Analog input (±0.5% FS) ±1 digit max. --- ---
Heater burnout CT input (±5% FS) ±1 digit max. --- ---
Hysteresis 0.1 to 999.9 EU (in units of 0.1 EU) --- ---
Proportional band (P) 1 to 9999 EU (in units of 1 EU) (See note 4.) --- ---
Integral time (I) 0 to 3,999 s (in units of 1 s) --- ---
Derivative time (D) 0 to 3,999 s (in units of 1 s) --- ---
Control period 0.5 s, 1 to 99 s (in units of 1 s) --- ---
Manual reset value 0.0% to 100.0% (in units of 0.1%) --- ---
Alarm output setting range
−1,999 to 9,999 (decimal point position
depends on input type)
--- ---
Sampling period 250 ms --- ---
Insulation resistance 20 M
Ω min. (at 500 VDC)
Dielectric strength 600 VAC, 50/60 Hz for 1 min between current-carrying terminals of different polarity
Vibration resistance
10 to 55 Hz, 20 m/s
2
for 2 hours each in X, Y, and Z directions
Shock resistance
150 m/s
2
max., 3 times each in 6 directions (on X, Y, and Z axes)
Degree of protection Rear case: IP20, Terminal section: IP00 Case: IP20
Memory protection EEPROM (non-volatile memory) (number of writes: 100,000) ---
Weight 180 g 160 g 70 g

Omron EJ1 Specifications

General

Brand	Omron
Model	EJ1
Category	Temperature Controller
Language	English