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(a) Temperature measurement range
The temperature measurement range is as follows.
• Input range lower limit - 5% of full scale to Input range upper limit + 5% of full scale
Ex.
A calculation example when CH Input range (Un\G32, Un\G64, Un\G96, Un\G128): 38 (temperature
measurement range: -200.0 to 400.0°C)
• Input range lower limit - 5% of full scale = -200 - ((400.0 - (-200.0)) × 0.05) = -230.0
• Input range upper limit + 5% of full scale = 400 + ((400.0 - (-200.0)) × 0.05) = 430.0
Therefore, the temperature measurement range is -230.0 to 430.0°C.
The Q64TCN checks whether the input temperature is in temperature measurement range of the input range.
When the input temperature is out of the temperature measurement range, CH Input range upper limit (b0 of
Un\G5 to Un\G8), or CH Input range lower limit (b1 of Un\G5 to Un\G8) become 1 (ON). The conditions which
the Q64TCN uses to judge whether the measured temperature is within the temperature measurement range
differ depending on the following settings.
• Setting/operation mode instruction (Yn1) ( Page 56, Section 3.3.3 (1))
• PID continuation flag (Un\G169) ( Page 131, Section 3.4.2 (43))
•CH PID control forced stop instruction (YnC to YnF) ( Page 58, Section 3.3.3 (7))
•CH Stop mode setting (Un\G33, Un\G65, Un\G97, Un\G129) ( Page 103, Section 3.4.2 (13))
The following table lists the conditions whether to perform the temperature judgment.
: Executed ×: Not executed
*1 Refer to Page 50, Section 3.3.2 (2) for each timing.
If CH Unused channel setting (Un\G61, Un\G93, Un\G125, Un\G157) is set to Disable (1), temperature judgment is not
executed even though the condition above is satisfied. ( Page 126, Section 3.4.2 (35))
Setting/opera
tion mode
instruction
(Yn1)
*1
PID continuation
flag (Un\G169)
CH PID control
forced stop
instruction (YnC to
YnF)
CH Stop mode setting
(Un\G33, Un\G65,
Un\G97, Un\G129)
Temperature
judgment
Setting mode at
power-ON
Stop (0)/Continue
(1)
OFF/ON
Stop (0) ×
Monitor (1)
Alert (2)
Operation mode
(in operation)
Stop (0)/Continue
(1)
OFF Stop (0)/Monitor (1)/Alert (2)
ON
Stop (0) ×
Monitor (1)
Alert (2)
Setting mode
(after operation)
Stop (0) OFF/ON
Stop (0) ×
Monitor (1)
Alert (2)
Continue (1)
OFF Stop (0)/Monitor (1)/Alert (2)
ON
Stop (0) ×
Monitor (1)
Alert (2)