Temperature Conversion Function (Using Unused Channels) - Mitsubishi Electric MELSEC iQ-R Series User Manual

1.9
Temperature Conversion Function (Using Unused
Channels)
In the heating-cooling control (normal mode), mix control (normal mode), or position proportional control (normal mode), only
the temperature measurement can be executed using unused temperature input terminals. When this function is used, the
temperature control and alert judgment are not executed.
Temperature input terminals that can be used
Temperature input terminals that can be used for this function differ depending on the control mode to be selected.
Use the MT2 (Monitor CH2), MT3 (Monitor CH3), and MT4 (Monitor CH4) terminals in the following table.
Terminal Terminal symbol
No.
When using thermocouples (R60TCTRT2TT2,
R60TCTRT2TT2BW)
Heating-cooling
control (normal
mode)
1 L1H
2 L1C
3 L2H
4 L2C
5 COM-
6 NC/CH2A
7 CH1+/CH1B
8 CH2+/CH2B
9 CH1-/CH1b
10 CH2-/CH2b
11 NC/CH1A
12 CJ
13 NC
14 CJ
15 MT3+
16 MT4+
17 MT3-
18 MT4-
Parameters and buffer memory areas that can be used in this function
The following lists the parameters and buffer memory areas that can be used in this function.
■Parameter
• "Input range setting" of "Control basic parameters" in "Application Setting"
• "Primary Delay Digital Filter Setting" in "Application Setting"
• "Sensor Correction Value Setting" in "Application Setting"
• "Number of moving averaging" in "Application Setting"
• "Temperature conversion setting" of "Heating/cooling control setting" in "Application Setting"
• "Cold Junction Temperature Compensation Selection" in "Application Setting" (the R60TCTRT2TT2 and
R60TCTRT2TT2BW only)
• "Rate alarm alert output enable/disable setting" of "Rate alarm" in "Application Setting"
• "Rate alarm warning detection period" of "Rate alarm" in "Application Setting"
• "Rate alarm upper limit value" of "Rate alarm" in "Application Setting"
• "Rate alarm lower limit value" of "Rate alarm" in "Application Setting"
Mix control Position
(normal mode) proportional
control (normal
mode)
L1 CH1 OPEN
L2 CH1 CLOSE
L3H CH2 OPEN
L3C CH2 CLOSE
COM- COM-
NC/MT2A NC/CH2A
CH1+/CH1B CH1+/CH1B
MT2+/MT2B CH2+/CH2B
CH1-/CH1b CH1-/CH1b
MT2-/MT2b CH2-/CH2b
NC/CH1A NC/CH1A
CJ CJ
NC NC
CJ CJ
CH3+ MT3+
CH4+ MT4+
CH3- MT3-
CH4- MT4-

1.9 Temperature Conversion Function (Using Unused Channels)

When using platinum resistance thermometers
(R60TCTRT2TT2, R60TCTRT2TT2BW, R60TCRT4,
R60TCRT4BW)
Heating-cooling Mix control
control (normal (normal mode)
mode)
L1H L1H
L1C L1C
L2H L3
L2C L4
COM- COM-
Not used Not used
CH1A CH1A
CH2A MT2A
CH1B CH1B
CH2B MT2B
CH1b CH1b
CH2b MT2b
MT3A CH3A
MT4A CH4A
MT3B CH3B
MT4B CH4B
MT3b CH3b
MT4b CH4b
1
Position
proportional
control (normal
mode)
CH1 OPEN
CH1 CLOSE
CH2 OPEN
CH2 CLOSE
COM-
NC
CH1A
CH2A
CH1B
CH2B
CH1b
CH2b
MT3A
MT4A
MT3B
MT3B
MT3b
MT4b
1 FUNCTIONS
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