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.
Functions
1) Auto tuning function
This function automatically adjusts the PID values (proportional band, integrating time, and derivative
time) necessary for control.
Appropriate PID values are input at the time of shipment from the factory. If the temperature deviation is
found at these values on a regular basis, try to perform auto tuning. The Controller will calculate and set
PID values automatically. Auto tuning may require a significant amount of time to complete, depending on
the operating conditions
.
2)Temperature Upper / Lower Deviation Limit Alarm Function (at shipment)
This function generates an alarm when the measured temperature deviates from the set temperature
by an amount outside of that defined as the upper or lower limit deviation. In that case, the
AL1
LED of
the Controller lights up and the alarm is generated via relay contact to a pin for the temperature
upper/lower deviation alarm of the alarm output connector. After the measured temperature returns to
within the upper or lower deviation, the alarm will be reset automatically. In its initial setting, the alarm
comes on immediately after the power supply is turned on when the temperature at that time deviates
from the set temperature by an amount outside of the upper or lower deviation limit. It is possible to
change this setting so that the alarm will not come on during warm-up to a temperature within the
upper and lower deviation limit after the power supply is turned on.
Table3 Relay contact for temperature deviation alarm
Item
Specification
Output type
Relay contact output: Opened when an alarm
occurs.
Contact rating
125VAC,0.4A/30VDC,2A (resistive load)
125VAC, 0.2A/30VDC,1A (inductive load)
Minimum load
5VAC,10mA / 5VDC,10mA
Mechanical life 5 million cycles or more
Electrical life
0.2 million cycles or more
3) Offset Function
This function adjusts the measurement range of the temperature sensor from -1.0 to 1.0
o
C. The
temperature sensor can be calibrated by inputting the difference (calibration value) between the
temperatures of a standard thermometer and the temperature sensor.
The Controller has already been given the calibration value of 25
o
C independently.
This input value is described in the Inspection Record.
P V
S V
A L 2
C O M
R D Y
D I
A L 1
O U T 2
●
●
●
O U T 1
●
●
●
●
M O D E
F U N C
This LED lights up when the temperature deviation alarm occurs.
