Pyronix PCX 256 User Manual page 33

pins has failed. Note: This
is a communication
problem, which is rarely
caused by an equipment
fault.
Fault Description
DEVICE FAIL Device on RS-485
xxx
communications bus failing
to communicate
485/COMMS Displayed on keypad that
LOST has not yet established
communications with End
Station
Keypad Keypad address does not
display is match any keypad enabled
BLANK
Keypad More than one device
display connected at the same
normal, but address
KEYS
LOCKED
OUT
Fault Description
SAB
Tamper fault detected on
TAMPER
connection from SAB
CASE Case tamper switch open
TAMPER
SIREN x
Monitors for German
TAMPER
specification fault
STROBE
conditions on relay plug-on
TAMPER
Fault Description
Battery Fuse (F4) failed,
BATTERY
OR Battery not present,
FAULT xxx
OR Battery volts low
Battery Load Test has
BAT LOAD
RINS867-2
RS-485 BUS PROBLEMS
Solution
Identify device from numeric code.
Check device addressed correctly to match
programming.
Check connections at device, and cabling to it.
If above correct, re-boot device, followed by re-boot
of End Station.
Part of routine initialisation procedure.
If persists, check display at other keypad(s) to
confirm if device failure at that keypad or complete
system RS-485 failure (temporarily attach
additional keypad direct to End Station if
necessary).
Check keypad address, noting that a keypad at
address 00 must be present to program system.
Also check "Assigning Keypads" menu in Engineer
mode set up correctly.
Correct addressing so that no overlaps. Then
power system down and up again to correctly
reinitialise.
DETECTION FAULTS
Solution
Terminal BT should be at or near 0v.
If not, is SAB Tamper switch closed?
Check Fuse F6 intact, and connections to SAB.
Secure switch closed
For UK use, Site Option "DIGI-REPLY" should NOT
be set to 'Relay monitor'.
POWER SUPPLY PROBLEMS
Solution
Note: This indication should be expected
during recharge after a mains failure.
Only displays if option selected.
P C X 2 5 6 U S E R M A N U A L
Page: 33