RKC INSTRUMENT Z-TIO-G, Инструкция по эксплуатации

Страница: 177 / 246

9. COMMUNICATION DATA DESCRIPTION
IMS01T28-E4
9-69
Derivative gain
RKC communication
identifier DG
Modbus
register address ch1: 0242H (578)
ch2: 0243H (579)
Use to set a gain used for the derivative action in PID control. Derivative gain should not be changed under
ordinary operation.
Attribute:
R/W
Digits:
7 digits
Number of data:
2 (Data of each channel)
Data range:
0.1 to 10.0
Factory set value:
6.0
Related parameters:
Derivative time (P. 9-23)
Under ordinary operation, it is not necessary to change the factory set value.
ON/OFF action differential gap (upper)
RKC communication
identifier IV
Modbus
register address ch1: 0246H (582)
ch2: 0247H (583)
ON/OFF action differential gap (lower)
RKC communication
identifier IW
Modbus
register address ch1: 024AH (586)
ch2: 024BH (587)
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).
Attribute:
R/W
Digits:
7 digits
Number of data:
2 (Data of each channel)
Data range:
RTD input: 0 (0.0, 0.00) to Input span (Unit:

C)
(Varies with the setting of the decimal point position.
However, even if "3: Three decimal places" is set, the maximum
settable decimal places are 2.)
Voltage (V) input: 0.00 to 100.00 % of input span
Factory set value:
RTD input:
1.00
Voltage (V) input: 1.00
Related parameters:
Proportional band (P. 9-22)
Function:
ON/OFF control is possible when the Proportional band is set to “0,” “0.0” or
“0.00.” 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)