ASL INTERCOM VAR8 Operation And Maintenance Manual page 151

VAR8 and Variants Operation, Commissioning, Fault Finding, and Maintenance Guide
Fault Description
Remote I/O Unit Comms
Fault
Remote I/O Unit
analogue channel fault
(open or short)
Remote I/O Unit Digital
Output channel fault
(load disconnected or
over current)
Remote I/O Unit Reset
Remote I/O Unit Over
Temperature (70 deg C)
Remote I/O Unit Fuse
Fire Loop Interface with
incompatible protocol
Failure of supply to
Router within the unit.
Failure on Internal fault
log
Failure of Configuration
Non-volatile memory
Internal Fuse
Communications failure
with Audio Control Unit
Communications failure
between VAR8 and its
Network Interface unit
-
Fault Code(s)
Reported and Logged
REMXX REMOTE I/O COMMS
XX=Remote I/O Unit Address
REMXX ANALOGUE I/P nn
XX=Remote I/O Unit Address
nn=Analogue Input Channel
REMXX DIGITAL O/P nn
XX=Remote I/O Unit Address
nn=Analogue Input Channel
REMXX RESET
XX=Remote I/O Unit Address
REMXX TEMP
XX=Remote I/O Unit Address
REMXX FUSE
XX=Remote I/O Unit Address
REMXX PROTOCOL
INT-01 SUPPLY FAULT
INT-01 FAULT LOG ERASED
INT-01 NON-VOL MEMORY
INT-01 FAULT 01
INT-01 SLAVENODE COMMS
INT-01 NIU FAULT
Is sue: 02 complete, approved
Check the Comms and power wiring to Remote I/O
Unit.
Check RS485 termination.
Check that address of Remote I/O Unit is correct.
If all above ok, suspect the unit itself. Check the unit's
internal CPU and COMMS LEDs.
Check wiring of Volume Control or selector on specified
Analogue channel.
Check load connection on particular Digital channel
In repeated occurrence, the Remote I/O Unit should be
replaced.
The system should be investigated to see how such a
high ambient temperature occurred.
Possible short circuit or overload on the I/O units DC
output.
The Fire Loop interface protocol is not supported by the
VAR8.
Check mains and battery switches are on and that both
supplies are present.
If the unit detects a problem with a fault log this fault is
logged, the system will install a blank log and keep
working functionally.
If repeated occurrence then the router in the Electronics
Module is faulty. This, or the entire Electronics Module
will need replacing.
The router in the Electronics Module is faulty. This, or
the entire Electronics Module will need replacing.
Check internal fuse.
Check connections to network cabling. The Audio
Control Unit has several diagnostic features, which help
pin-point any failures around the network. If the network
seems intact, then the Network Interface Card within
the VAR8 may need replacing.
Suspect the
interconnection to the Router.
Page 151 of 166
Suggested Action
Network Interface Card or its