Loop Test - Emerson Rosemount 3051S Series Reference Manual

Rosemount 3051S Series

Loop Test

Traditional Fast Keys
Device Dashboard
Fast Keys
3-26
The Loop Test command verifies the output of the transmitter, the integrity of
the loop, and the operations of any recorders or similar devices installed in the
1, 2, 2
loop.
3, 5, 1
Field Communicator v3.3
To initiate a loop test, perform the following procedure:
1. Connect a reference meter to the transmitter by either connecting the
meter to the test terminals on the terminal block, or shunting transmitter
power through the meter at some point in the loop.
2. From the HOME screen, enter the fast key sequence "Loop Test" to
verify the output of the transmitter.
3. Select OK after the control loop is set to manual (see "Setting the Loop
to Manual" on page 3-2).
4. Select a discrete milliamp level for the transmitter to output. At the
CHOOSE ANALOG OUTPUT prompt select 1: 4mA, select 2: 20mA, or
select 3: "Other" to manually input a value.
a. If you are performing a loop test to verify the output of a transmitter,
enter a value between 4 and 20 mA.
b. If you are performing a loop test to verify alarm levels, enter the
milliamp value representing an alarm state (see Table 3-1,
Table 3-2, and Table 3-3 on page 3-18).
5. Check the reference meter installed in the test loop to verify that it
displays the commanded output value.
a. If the values match, the transmitter and the loop are configured and
functioning properly.
b. If the values do not match, the current meter may be attached to the
wrong loop there may be a fault in the wiring, the transmitter may
require an output trim, or the reference meter may be
malfunctioning.
After completing the test procedure, the display returns to the loop test screen
to choose another output value or to end loop testing.
AMS v7.0
Right click on the device and select "Diagnostics and Test," then "Loop test"
from the menu
1. Connect a reference meter to the transmitter by either connecting the
meter to the test terminals on the terminal block, or shunting transmitter
power through the meter at some point in the loop.
2. Click Next after setting the control loop to manual.
3. Select desired analog output level. Click Next.
4. Click Next to acknowledge output being set to desired level.
.
Reference Manual
00809-0100-4801, Rev EA
August 2010