Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 38)

<5. CONFIGURATION>
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IM 11M12D01-61E
5.6.4 AI Function Block Parameters
Parameters of the three AI function blocks can be read and written from the host. For a list of block
parameters in each AV550G, refer to Appendix 1, “List of Parameters for Each Block of AV550G.”
The following describes important parameters and how to set them.
MODE_BLK:
Indicates the three types of function block modes; Out_Of_Service, Manual, and Auto. In
Out_Of_Service mode, the AI block does not operate. The Manual mode does not allow
values to be updated. The Auto mode causes the measured value to be updated. Under
normal circumstances, set the Auto mode to take effect. The Auto mode is the factory default.
CHANNEL:
This is the parameter of the transducer block to be input to the AI block: Averaging oxygen
concentration Ave-a is connected to AI1, Averaging oxygen concentration Ave-b is connected
to AI2, and Averaging oxygen concentration Ave-c is connected to AI3.
Do not change these settings.
XD_SCALE:
Range of input from the transducer block.
Factory defaults are:
“0” (0%), “100.0” (100%) and “%” for the units.
The value of XD_SCALE cannot be set up except the initial factory default value of the
AV550G.
OUT_SCALE:
Sets the output range (default is 0% to 100%).
L_TYPE:
Specifies AI1 block output scaling. The factory default “Direct” means no scaling,
OUT is the same as the CHANNEL input. If set to “Indirect”, then XD_SCALE is mapped to
OUT_SCALE. “Indirect SQRT” is not valid for the AV550G.
PV_FTIME:
Sets the damping (1st order lag) time constant of the AI1 block in seconds.
Alarm Priority:
Indicates the priority of the process alarm. If a value of 3 or greater is set, an alarm is transmitted.
The factory default is 0. Four types of alarm can be set: HI_PRI, HI_HI_PRI, LO_PRI, and
LO_LO_PRI.
Alarm Threshold:
Sets the threshold at which a process alarm is generated. The factory default setting is a
value that does not generate an alarm. Four types of alarm can be set: HI_LIM, HI_HI_LIM,
LO_LIM, and LO_LO_LIM.
5.6.5 Transducer Block Parameters
The transducer block settings are specific to the AV550G functions. Refer to the list of AV550G block
parameters in Appendix 1. Here we explain the more important parameter settings.
(1) Explanation of Parameters
1) PRIMARY_VALUE_1 (Relative Index is 13)
Type of measurement, for the AV550G this is 119 (oxygen).