Troubleshooting Visual Alarm Codes; Figure 76: Liquid Crystal Display And Indicators; Table 16: Visual Alarm Codes - ABB XSeriesG4 User Manual

Troubleshooting visual alarm codes

Overview
When a visual indicator is present (see Figure 76), the following section will assist in determining the probable cause and the
steps required to correct the condition.
For the purpose of troubleshooting, only those codes considered alarms or codes used to assist troubleshooting are discussed
here. The entire list of status and alarm codes may be found in Section 1, System overview. Table 16 contains a description of
G4
each XRC alarm code. An alarm can be a word, character, letter or symbol.
An application can be assigned to an annunciator and any alarms or status codes associated with that application will be
displayed.
Indicator Description
I/O Sub-System
Low Lithium Battery Alarm: When LL (low lithium) is displayed, the lithium battery voltage is below 2.5 Vdc. If
LL battery voltage is above 2.5 Vdc, A1 appears shaded. A new lithium battery measures approximately 3.6
Vdc.
Low Charger: Displayed if the XRC
LC
voltage. If charging voltage is (+) 0.4 Vdc greater than the battery voltage, then the annunciator is shaded.
Measurement Application
A to D Failure: Displayed if A to D Converter absolute differential pressure, absolute static pressure or
AD temperature readings exceed maximum counts or are less than minimum counts. If A to D Converter
readings are within range, AD is shaded.
Communication Protocols

Transmitting Data: Sending a response

Receiving Data: Processing request.
! Nak: Negative acknowledgement with packet list.
+ Ack: Positive acknowledge of receipt of request.
Waiting for Ack: Waiting for response after transmission.
? Exception Alarm Processing.
ID Recognized: Recognized and receiving request.
Listen Cycle: Flashes if this remote port is active and running Totalflow Remote Protocol. Flashes in sync
with listening cycle that occurs at 1, 2 or 4 second intervals.
®
M MODBUS ASCII: MODBUS
®
m MODBUS RTU: MODBUS
L Local Protocol: Displayed when PCCU port is active and running Totalflow Local Protocol.
¥ ID Recognized: The ID has been recognized but is waiting for Sync.

Figure 76: Liquid Crystal Display and indicators

Table 16: Visual alarm codes

G4
battery charging voltage is less than (+) 0.4 Vdc higher than the battery
®
ASCII protocol is selected for the port assigned to this annunciator.
®
RTU protocol is selected for the port assigned to this annunciator.
XSeriesG4 Remote Controller User's manual 2103334 Rev. AB | 83
5 Troubleshooting
Alarm
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Y
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