Omron EJ1G, User Manual

Page: 192 / 237

171
Specifications
Appendix
Characteristics
Note (3) W: (±0.5% of indication value or ±3°C, whichever is greater) ±1 digit max.
PLII: (±0.5% of indication value 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) Ambient temperature:
−
10
°
C to 23
°
C to 55
°
C
Voltage range:
−
15% to +10% of rated voltage
(5) 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 (***.*).
The following table shows the control operation cycles for gradient temperature control. The control operation
cycle may be longer than indicated, depending on the load status.
Measurement conditions: Using programless operation with a multiple read command to read 300 points during operation of all
channels.
The control operation cycle can be checked at the Control Operation Cycle Monitor parameter (address 0014
of variable type C4/84).
TC4/TC2 HFU EDU
Indication accuracy Thermocouple input/
platinum resistance
thermometer input
(±0.5% of indication value 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. --- ---
Temperature variation influence
(See note 4.) Thermocouple input (R, S, B): (
±
1% of indication value (PV) or
±
10
°
C, whichever
is greater)
±
1 digit max.
Other thermocouple input: (
±
1% of indication value (PV) or
±
4
°
C, whichever is
greater)
±
1 digit max.
K thermocouple at
−
100
°
C max:
±
10
°
C max.
Platinum resistance thermometer: (
±
1% of indication value (PV) or
±
2
°
C, whichever is
greater)
±
1 digit max.
Analog input:
±
1% FS
±
1 digit max.
Voltage variation influence
(See note 4.)
Proportional band (P) --- 0.1 to 999.9 EU (in units
of 1 EU) (See note 5.) ---
Integral time (I) --- 1 to 3.999 s (in units of
1 s) ---
Derivative time (D) --- 0.0 to 9.999 s (in units
of 1 s) ---
Control period 0.5 s, 1 to 99 s (in units of 1 s) --- ---
Alarm output setting range ---
−
1,999 to 9,999 (deci-
mal 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
Using TC2 Units Using TC4 Units
No. of gradient temperature control channels 4 16 32 4 16 4 32 4 32
No. of gradient temperature control groups 1 1 1 8 2 1 1 16 2
No. of Units used 2 8 16 16 16 1 8 16 16
Control operation cycle [ms] 250 500 250 500