8. PARAMETER DESCRIPTION
IMR02C15-E4
8-126
Dummy
F51
ON/OFF action differential gap (upper)
ON/OFF action differential gap (lower)
ON/OFF action differential gap (upper):
Use to set the ON/OFF control differential gap (upper).
ON/OFF action differential gap (lower):
Use to set the ON/OFF control differential gap (lower).
Data range Factory set value
TC/RTD inputs:
0 (0.0) to 100 (100.0) °C [°F]
1 (1.0)
Voltage (V)/Current (I) inputs:
0.0 to 10.0 % of Input span
0.1 % of Input span
Related parameters
Parameter setting mode:
• Proportional band [heat-side] (P. 8-26)
Description of function
ON/OFF control is possible when the Proportional band is set to “0” or “0.0.” In ON/OFF control with
Reverse action, when the Measured value (PV) is smaller than the Set value (SV), the Manipulated
output (MV) is 100 % or ON. When the PV is higher than the SV, the MV is 0 % or OFF.
Differential gap setting prevents control output from repeating ON and OFF too frequently.
Differential gap
(Upper)
Set value (SV)
Manipulated output
value (MV)
Time
ON
OFF ON OFF ON OFF
Differential gap
(Lower)
oHH
oHL
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