889-3819-00
MMU2-1600GE series Operations Manual Rev Apr 2020 Page
49
of 51
Functions may be disabled for one of several different reasons:
INDICATOR
DISABLE CONDITION
TYPE 12
The monitor is configured to operate in Type 16 Only mode.
24V-1
The +24V Monitor Inhibit input (Connector A - Pin n) is at a logic TRUE (Low) state.
24V-2
The +24V Monitor Inhibit input (Connector A - Pin n) is at a logic TRUE (Low) state.
SHORT YEL
The Red Enable input (Connector B - Pin a) is below 70VAC.
SHORT CLR
The Red Enable input (Connector B - Pin a) is below 70VAC.
PORT 1 FAIL
The Port 1 Disable input (Port 1 Connector - Pin 10) is at 0 VDC.
Port 1 communications are not active during Type 12 operation.
FIELD CHK
The Port 1 Disable input (Port 1 Connector - Pin 10) is at 0 VDC.
The Red Enable input (Connector B - Pin a) is below 70VAC.
The LOAD SWITCH Flash bit is set to 1 in the Type 0 frame from the Controller Unit.
LOC FLASH
The monitor is configured to operate with the Disable Local Flash feature enabled.
RED FAIL
The Red Enable input (Connector B - Pin a) is below 70VAC.
The LOAD SWITCH Flash bit is set to 1 in the Type 0 frame from the Controller Unit.
DUAL IND
The Red Enable input (Connector B - Pin a) is below 70VAC.
4.8
AUDIBLE BUZZER
The monitor is equipped with an audible buzzer. This buzzer is used to bring important events to the attention of
the user. The buzzer can be disabled for pending configuration notifications only. This can be done through the
RaeComM software or via the front panel (See Section 4.6.2.1.7.9.
4.8.1
CRITICAL FAILURE
When the monitor main microprocessor is held in the reset state due to a critical hardware failure, the buzzer will
stay on constantly. There is no way to disable this indication, as it is an indication that the monitor is not
operational.
4.8.2
CONFIGURATION CHANGE
Configuration changes can originate from several sources. They are the front panel, the Com port, the Ethernet
port, and the program card. The monitor checks for configuration changes once each second. If a configuration
change is identified, the audible buzzer will start to beep at a one second rate. The one second beep is disabled
when the user is currently in the fault monitoring configuration on the front panel. This beeping is an indication
that a change to the current configuration has been identified and is pending. The monitor does not implement any
configuration changes until the front panel
RESET
pushbutton is pressed and help for five seconds or Save
Changes is confirmed in fault monitoring configuration on the front panel. At that time the monitor will give 5
confirmation chirps and the buzzer will stop beeping. If the configuration parameters that were changed are
restored to their original states (undone), the buzzer will stop beeping.
NOTE: If power is removed from the monitor prior to the configuration changes being accepted by pressing the
RESET pushbutton or Save Changes is confirmed in fault monitoring configuration on the front panel, the pending
changes will be lost and the original settings will be used on power up.