Date Code 20011009
SEL-701-1 Monitor
Commissioning
Selected Functional Tests
6.15
Analog Output Accuracy
Step 1.
Connect a dc milliammeter in series with the analog output terminals
(B01, B02). Connect a PC to the monitor front-panel serial port using
an appropriate serial cable. Using the SEL-701PC software terminal
function or other terminal emulation software, establish
communications with the monitor at Access Level 2 (see
for more details).
Step 2.
Use the Access Level 2
ANALOG
command to temporarily control
the analog output. Refer to
. Using the milliammeter
reading, verify that the analog output is correct for each level.
RTD Input Measuring Accuracy
Step 1.
Use the front-panel Set Monitor\Monitor Elements\RTD
Configuration function or serial port
SHOW
command to view the
input RTD Type setting for each RTD input. Connect a variable
resistance to each RTD input in turn. The temperatures given in
are based on the RTD type and the value
of the resistance. Referring to these tables, change the resistance
applied to each input until the appropriate temperature is displayed.
Step 2.
Use the front-panel Meter Values\Thermal & RTD Data function or
serial port
METER T
command to view the present temperature
measured by the monitor RTD input. The temperature displayed
should be ±2°C or ±4°F from the temperature represented by the
variable resistance.
Table 6.7
Analog Output Test
Desired
% Output
ANALOG
Command
Expected
Meter
Reading
(0–1 mA
Range)
Expected
Meter
Reading
(0–20 mA
Range)
Expected
Meter
Reading
(4–20 mA
Range)
Actual
Meter
Reading
0%
ANA 0 1
0.0 mA
0.0 mA
4.0 mA
25%
ANA 25 1
0.25 mA
5.0 mA
8.0 mA
50%
ANA 50 1
0.5 mA
10.0 mA
12.0 mA
75%
ANA 75 1
0.75 mA
15.0 mA
16.0 mA
100%
ANA 100 1
1.0 mA
20.0 mA
20.0 mA
Содержание SEL-701-1
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