Troubleshooting - ABB RMC-100 Startup Manual

10 Troubleshooting

10.1 Visual alarm and status codes
After powering on, observe the LCD display. System alarms may display and
indicate a condition to be resolved (Figure 28).
Table 15 provides a description of the alarms and status codes. The alarms provide
a brief summary of the action to resolve the condition.
Indicator Description and action
System
No annunciators or nothing on the display. No power to the controller.
(Blank LCD) Action: Check the cable connections and check the voltage. Make a local
connection with RMC and PCCU.
Low Lithium Battery Alarm. When LL (low lithium) displays, the lithium
battery voltage is below 2.5 Vdc. If lithium battery voltage is above 2.5 Vdc,
LL
LL appears shaded. A new lithium battery measures approximately 3.6 Vdc.
Action: Replace the lithium battery.
Low Charger. Displayed if the battery charging voltage is (+) 0.4 Vdc or is
less than or equal to battery voltage. If (+) 0.4 Vdc battery charging voltage is
LC
greater than battery voltage, LC is shaded.
Action: Check the cable connections and check the power source.
Display application
1 A number represents the Display Group number currently displayed.
The displayed item's value is above the Data High Limit value specified on
↑
the Display Item Setup screen.
The displayed item's value is below the Data Low Limit value specified on
↓
the Display Item Setup screen.
Communication protocols
→
Transmitting data: sending a response
←
Receiving data: processing a response
! Nak: Negative acknowledgement with packet list
+ Acknowledgement: positive acknowledge of receipt of request
Waiting for Acknowledgement; waiting for response after transmission
? Exception alarm processing
ID Recognized: The ID has been recognized but is waiting for "Sync"
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.
DATE/TIME
02/28/16 13:00:26
1 L
u n
C
Figure 28: LCD display
Table 15: Alarms and status codes
Annunciators
2105551-001 rev. AC | 31