Emerson 3051S Specifications download pdf (Page 73)

Reference Manual

00809-0100-4001, Rev JA

Section 3: Configuration

November 2012

Configuration

Field communicator

To initiate a loop test, perform the following procedure:

1. a. For 4-20 mA HART output, 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.

b. For 1-5 Vdc Low Power HART output, connect a reference meter to the V

out

terminal.

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 40).

4. Select a discrete milliamp level for the transmitter to output. At the CHOOSE ANALOG

OUTPUT prompt select 1: 4mA (1 Vdc), select 2: 20mA (5 Vdc), 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 (1 and 5 Vdc).

b. If you are performing a loop test to verify alarm levels, enter the value representing an

alarm state (see Tables 3-3, 3-4, and 3-5 on page 61).

5. Check that the reference meter 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 meter may be attached to the wrong loop, there may be

a fault in the wiring or power supply, 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.

Traditional 4-20 mA Fast Keys

1, 2, 2

Traditional 1-5 Vdc Fast Keys

1, 2, 2

Device Dashboard Fast Keys

3, 5, 1

1 2 ... 68 69 70 71 72 73 74 75 76 77 78 ... 221 222

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Emerson 3051S Specifications Page 73