Rosemount 54E, Инструкция по эксплуатации

Страница: 33 / 84

27
MODEL 54e pH/ORP SECTION 5.0
SOFTWARE CONFIGURATION
5.3 CHANGING OUTPUT SETPOINTS (NORMAL ONLY)
This section describes how the 4 (or 0) to 20 mA current outputs can be
reranged. Note that the current outputs can be configured to represent
pH, temperature, glass impedance, or reference impedance.
See
Section 5.6 for details on configuration.
1. From the main menu, move the cursor down to "Program" and press
Enter (F4). On this display, move the cursor to "Rerange outputs"
and press Enter (F4).
2. Select the desired output by moving the cursor down to highlight it.
When the correct output is highlighted, press Enter (F4) to get to the
adjustment screen.
3. This message asks for confirmation of the requested change.
Changes in these settings may degrade process control, so use cau-
tion when making changes. Press Enter (F4) to continue. Otherwise
press Abort (F1).
This screen allows changing the setpoints for output 1. A similar screen
is available for output 2. The live current output now being transmitted
by the controller is shown on the third line.
4. Press Edit (F4) to make changes in the setpoints. The Edit key
changes to a Save key and the F3 key becomes active as an Esc
key. Use the arrow keys to make the display read the desired values
for the high and low current output limits. When done, press Save
(F4) to enter the changes into memory. Press Esc (F3) to cancel
changes.
NOTE
Outputs that have been configured as 0-20 mA in Section 5.6,
will show 0 mA instead of 4 mA on the top line. Outputs that are
based on temperature or impedance values will show matching
units such as °C, M
Ω
, or k
Ω
. See Section 5.6 for output configu-
ration.
Output 1
Output 2
Exit Enter
4 mA: +00.00 pH
20 mA: 14.00 pH
Output 1: 12.00 mA
Esc Save
Alarm setpoints
Output setpoints
Simulated test
Exit Enter
CAUTION: Current
Output 1 will be
affected.
Exit Enter
4 mA: 0.00 pH
20 mA: 14.00 pH
Output 1: 12.00 mA
Exit Enter