Troubleshooting ______________________________________________________________________
RF-MCGARDPRO
Hubbell Power Systems, Inc.
–
RFL™
Products
July 1, 2022
©2022 Hubbell Incorporated
8-2
8.2.1 Alarm Status
Alarm Status
Slot
Location
Module Type
Figure 8-2. Alarm Status Page
8.2.2 PLC Digital Module, Module Level Alarms
Each module can report a Major or Minor alarm. This information is sent over the Control Bus
and is a status condition only. The time critical alarms should be handled by the logic functions.
Not all modules generate alarms.
The criteria for a module going into Major or Minor alarm is hard-wired into the module and
cannot be changed by the user. However, how the system reacts to these alarms is controlled by
the user. For each alarm type on each module, the user can select if he wants to put the system
into Major Alarm, Minor Alarm, or to ignore the module alarm.
The user programs the HPS/RFL GARD Pro system alarms using the Alarm Configurations
Webpage described in Section
Table 8-1 PLC Digital Module, Module Level Alarms
Major Alarm
Minor Alarm
How is Alarm Generated
Loss of Transmitter
The transmitter has failed.
SNR
The Signal to Noise Ratio is too low.
Logic Bus
The logic bus disable bit is set.
Carrier
Active if the Carrier is forced to any state.
Checkback
The Checkback sequence has failed.
RX Level
Active if the receive level is too low.
RPM
Active if the Reflected Power Meter has failed.