Emerson Process Management 5300 Alarm and Saturation Levels, Write Protection Site Acceptance

Reference Manual

00809-0100-4530, Rev BA July 2009

Rosemount 5300 Series

Alarm and Saturation Levels

Table 8-3. Alarm levels and operation values

DCS or safety logic solver should be configured to match transmitter configuration. Table 8-3identifies the alarm levels available and their operation values.(1)

Rosemount Alarm Level

					Normal Operation
3.75	mA(1)		4	mA	20	mA		21.75	mA(2)
	3.9	mA					20.8	mA
	low saturation						high saturation

Namur Alarm Level

					Normal Operation
3.6	mA(1)		4	mA			22.5	mA(2)
					20 mA
	3.8	mA				20.5	mA
	low saturation					high saturation

Write Protection

Site Acceptance

(1)Transmitter Failure, hardware or software alarm in Low position.

(2)Transmitter Failure, hardware or software alarm in High position.

It is assumed that the current output signal is fed to a SIL2-compliant analog input board of a safety logic solver. For instructions on alarm level settings see “Analog Output (HART)” on page 5-9.

NOTE!

Only the High or Low Alarm Mode can be used for the Safety Function. Do not choose Freeze Current as an error will not be announced in the current loop.

A Rosemount 5300 transmitter can be protected from unintentional configuration changes by a password protected function. It is recommended to use write protection described in “Write Protecting a Transmitter” on page 7-26.

After the installation and configuration, proper operation of the transmitter should be verified. A site acceptance test is therefore recommended. The proof test outlined in this section can be used for this.

OPERATION AND MAINTENANCE

General

The Rosemount 5300 Series Prior-Use option must be tested at regular intervals to confirm that the overfill and empty tank protection function result in the desired system response. The required proof test intervals are dependant on the configuration of the transmitter and the process environment. The Rosemount 5300 is designed to have a 5-year proof test interval assuming it represents the typical 35% of the SIF PFDAVG. However, it is the responsibility of the operator/owner of the system to determine the sufficient time interval and verify it is followed. See the FMEDA report for additional details or references.

(1)In certain cases, the transmitter does not go into the user defined alarm state. For example, in case of a short circuit, the transmitter goes into High Alarm state even if Low Alarm has been configured.

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