Emerson ROSEMOUNT 5300 Specifikace stáhnout pdf (Strana 29)

Reference Manual

00809-0600-4026, Rev BA

December 2011

2-19

Rosemount Process Radar

Damping

User adjusted damping affects the transmitter’s ability to respond to

process changes. Therefore, the damping values + response time should

not exceed the loop requirements.

Alarm and Saturation Levels

DCS or safety logic solver should be configured to match transmitter

configuration. Table 5 identifies the alarm levels available and their

operation values.

(1)

It is assumed that the current output signal is fed to a Safety Integrity Level

2 (SIL2) -compliant analog input board of a safety logic solver. For

instructions on alarm level settings, see the Rosemount 5300 Series

Reference Manual (Document No. 00809-0100-4530), “Analog Output

(HART)” section.

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.

Write Protection

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 the Rosemount 5300

Series Reference Manual (Document No. 00809-0100-4530), “Write

Protecting a Transmitter” section.

Site Acceptance

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.

(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.

Table 5. Alarm levels and operation values

Rosemount Alarm Level

Normal Operation

3.75 mA

(1)

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

4 mA 21.75 mA

(2)

3.9 mA

low saturation

20.8 mA

high saturation

Namur Alarm Level

Normal Operation

3.6 mA

(1)

4 mA 22.5 mA

(2)

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

3.8 mA

low saturation

20.5 mA

high saturation

20 mA

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 105 106

Komentáře k této Příručce

Žádné komentáře

Emerson ROSEMOUNT 5300 Specifikace Strana 29

Komentáře k této Příručce

Související produkty a manuály pro Měření, testování a kontrola Emerson ROSEMOUNT 5300