Manual Settings (Expansion Mode) - Omron CQM1 Operation Manual

AT (Expansion Mode)
3-6-1

Manual Settings (Expansion Mode)

Parameter
Set point
Proportional band
Integral time
Derivative time
Hysteresis
Control period
Input shift value
Process value
Manipulated variable
Status
Auto-tuning can be started by taking the following procedure on the Program-
ming Console.
Default: SP = 100 C and PV = 98 C
? ?
'&
Write the AT start code "CF00" to the output word of the relevant loop and
confirm that the input word will become CF00.
? ?
+. +.
Set SP to 100 C again.
? ?
'&
To cancel auto-tuning, use the code "CF01" instead and follow the above pro-
cedure.
Note 1. To put the Temperature Control Unit into expansion mode, change the
jumper pin on the side of the Unit from 2 and 3 to 1 and 2.
2. Auto-tuning is not available if the half period exceeds 9999 s (approximate-
ly 2 hours 45 minutes). If the half cycle exceeds 9999 s, no measurement
is possible and the Temperature Control Unit will restart auto-tuning auto-
matically.
3. If the output word data is left as CF00, auto-tuning will be repeated. Be
sure to return it to the set value.
When the Temperature Control Unit is turned ON, the SP will be allocated to
the output word and the PV will be allocated to the PV word. By changing the
contents of the allocation, the following six set values can be read or written.
Setting range Unit
–999 to 9,999 C/ F
0.1 to 999.9 C/ F
0 to 3999 Seconds 240
0 to 3999 Seconds 40
0.1 to 999.9 C/ F
1 to 99 Seconds 2
–99.9 to 999.9 C/ F
–999 to 9,999 C/ F
0.1 to 100.0 %
--- ---
Default
0 ---
40.0 ---
---
---
0.8 ---
When SW1-6 is set to ON, the value can be changed.
In this case, the default is "2."
0.0 ---
--- Read-only
--- Read-only
--- Read-only
Section 3-6
Remarks
283