Enable Safety Mode; Alarm And Saturation Levels - Emerson Rosemount 5408 Reference Manual

2.
8.6.4

Enable safety mode

If the transmitter is configured for use in Safety (SIS), then the Safety Mode must be
enabled for the transmitter to become operational. When Safety Mode is enabled, the
transmitter is write protected (with or without a password) to prevent unauthorized
changes.
Use Rosemount Radar Master Plus
1.
2.
Use AMS Device Manager and Field Communicator
1.
2.
8.6.5

Alarm and saturation levels

DCS or safety logic solver should be configured to handle both High alarm and Low alarm.
In addition, the transmitter must be configured for High or Low alarm (see
Figure 8-3
(1) Note that during startup, the Rosemount 5408:SIS always outputs Low alarm current even if the transmitter is configured for High alarm
mode.
Rosemount 5408 and 5408:SIS Level Transmitters
Under Safety Instrumented Systems, select Change Operational Mode and follow the
on-screen instructions.
Note
When entering the Safety (SIS) operational mode, the analog output will be put into alarm
mode until the Safety Mode is enabled.
Under Configure, select Device Setup > Security.
Under Safety Mode, select Change and follow the on-screen instructions.
Select Configure > Manual Setup > Device Setup > Security.
Under Safety Instrumented Systems, select Change Safety Mode and follow the on-
screen instructions.
identifies the alarm levels available and their operation values
Safety Instrumented Systems (4-20 mA only)
Alarm
(1)
.
mode).
137