Rosemount 54E, Инструкция по эксплуатации

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MODEL 54e pH/ORP SECTION 5.0
SOFTWARE CONFIGURATION
5.6 CHANGING OUTPUT PARAMETERS (continued)
4a. Menu Item Options
Range 4-20mA/0-20mA
Dampen(ing) 0-299 sec
Hold Last value/fixed value
Fixed Hold (if Output 1 hold is "fixed value") 0-22.00 mA
Fault (fixed value in a fault condition) 0-22.00 mA
These parameters can be adjusted by highlighting the desired item
and pressing the Edit
"
key. Once Edit has been pressed, change
the item as needed and then press Save
"
to store the value.
"Range" determines whether the 4-20mA or 0-20 mA convention is
used for the current output. If the range is changed, be sure to
rerange the outputs as described in Section 5.3.
"Dampening" is used to time-average the current output, smoothing
out the effect of a noisy reading. Higher values provide more smooth-
ing.
Enabling the "hold" feature will give the user the option of placing the
output in hold during the calibration sequence.
A "fixed value" places the held output at a fixed value between 0 and
22 mA.
4b. Menu Item Options
Setpoint -2 to 16 (pH), ±1400 mV (ORP/Redox)
-15 to 120°C (Temp), 0-140 k
Ω
(Ref Imp),
0-2000 M
Ω
(Glass Imp)
Proportional 0-299.9 %
Integral 0-2999 sec
Derivative 0-299.9 %
The four parameters above are only available for outputs that have
been configured as PID outputs in step 3. These parameters can be
adjusted using the same technique as in step 4a, by highlighting the
desired item and pressing the Edit
"
key. Once Edit has been
pressed, change the item as needed and then press Save
"
to
store the value.
Use caution in changing the values of these parameters.
"Setpoint" is usually the desired value at which the process is being
controlled, typically the output will be 4(or 0) mA when the parameter
is near the setpoint. This setting can also be changed using the pro-
cedure in Section 5.1.
Output Setup Parameters
(for Normal Outputs)
Output Setup Parameters
(for PID Outputs only)
Range: 4-20 mAl
Dampen: 0 sec
Hold: Last Value
Exit Edit
Derivative: 0.0%
Range: 4-20 mA
Hold: Last Value
Exit Edit
Hold: Last Value
Fixed Hold: 21.00 mA
Fault: 22.00 mA
Exit Edit
Setpoint: 7.00 pH
Proportional: 100.0%
Integral: 0 sec
Exit Edit
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