Normal Front-Panel Display; Front-Panel Automatic Messages; Figure 5.2 Default Meter Display Screen; Figure 5.3 Default Display Message Screen - Siemens SIMPRO-100 Instruction Manual

5
Front-Panel Operation
5.2 Normal Front-Panel
Display
In normal operation, the Relay Enabled LED
should be lit. Usually, you will find the front-panel
vacuum fluorescent display dark. The relay is
equipped with a front-panel timeout setting (see
"Front-Panel Configuration Settings", page 66)
that extends the life of the vacuum fluorescent
display and improves front-panel security. After a
settable period of inactivity, usually 15 minutes,
the relay automatically shuts off the display. If the
front panel was in Access Level 2, it automatically
returns to Access Level 1 when the display times
out. To activate the display, press the {ESC}
pushbutton.
When the front-panel display is active, the relay
can place several screens in a rotation, showing
each screen for about two seconds before
moving to the next. The default meter screen,
shown in Figure 5.2, includes the phase current
and maximum phase-to-phase voltage
magnitudes. If the relay is equipped with optional
voltage and/or RTD inputs, you can enable the
relay to add real and reactive power, power
factor, and frequency meter screens and/or the
temperatures of the hottest RTDs to the default
rotation.

Figure 5.2 Default Meter Display Screen

The relay automatically displays custom text
messages in rotation with the meter screens. The
factory default settings define three display
messages. Two of these messages are always
included in the default display rotation and are
shown in Figure 5.3. The third is only shown if an
RTD failure is detected.

Figure 5.3 Default Display Message Screen

76
Control the contents of these custom messages
using the Display Message settings, described in
"Front-Panel Display Message Settings",
page 67. If you wish to change the conditions
under which the relay displays a message, refer
to Appendix B, page 137.
5.3 Front-Panel
Automatic Messages
The relay displays automatic messages under
the conditions described in Table 5.1.
Condition Front-Panel Message Shows
Motor Running Predicted time to thermal element
Overloaded trip, in seconds
Relay Trip Has Type or cause of the trip (see
Occurred Chapter 9, page 117).
Relay Self-Test Failure Type of failure (see Chapter 10,
Has Occurred page 127)
Attempted Motor Start Reason start was blocked and time
Was Blocked until a start is allowed
Table 5.1

Front-Panel Automatic Messages

SIMPRO-100
PRIM-2400C