Emerson 3051S Especificações descarregar pdf (Página 142)

Reference Manual

00809-0100-4801, Rev FA

October 2010

Rosemount 3051S Series

7-38

Configuring Alarm and Saturation Levels

1. If using a Field Communicator, use the following fast key sequence to set

the Alarm and Saturation values.

Fast Key Sequence - 2, 2, 2, 5, 6

2. Manually set the direction for the Alarm to HI or LO using the ALARM

switch as shown in Figure 7-30.

Figure 7-30. Security and alarm

configuration

3051S SIS Operation and

Maintenance

Proof Test

The following proof tests are recommended.

Proof test results and corrective actions taken must be documented at

http://rosemount.d1asia.ph/rosemount/safety/ReportAFailure_newweb.asp

(to report a failure) in the event that an error is found in the safety functionality.

All proof test procedures must be carried out by qualified personnel.

Use “Fast Key Sequence” on page 3-6 to perform a Loop Test, Analog Output

Trim, or Sensor Trim. Security switch should be in the “OFF” position during

proof test execution and repositioned in the “ON” position after execution.

Simple Proof Test

The simple suggested proof test consists of a power cycle plus reasonability

checks of the transmitter output. This test will detect ~ 41% of possible DU

failures in the device.

Required tools: Field Communicator and mA meter.

1. Bypass the safety function and take appropriate action to avoid a false

trip.

2. Use HART communication to set the transmitter in fixed current mode.

For the Emerson Field Communicator, enter Fast Key Sequence 3, 5, 1.

Select “4 Other.”

3. Enter the milliamp value representing a high alarm state.

4. Check the reference meter to verify the mA output corresponds to the

entered value.

5. Enter the milliamp value representing a low alarm state.

6. Check the reference meter to verify the mA output corresponds to the

entered value.

7. Remove the bypass and otherwise restore normal operation.

8. Document the test results per your requirements.

9. Place the Security switch in the “ON” position.

Security

Alarm

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