PCX 46 Programming Reference
Page: 39
Keypad = Kpd Reader = Trd
Control panel = Pnl
485/COMMS
LOST
Displayed on keypad that has not
yet established communications
with the control panel (End
Station)
Part of routine initialisation procedure.
If persists, check display at other
keypad(s) to confirm if device failure is at
keypad or complete system BUS failure.
Temporarily install additional keypad.
Keypad display is
BLANK
Keypad address does not match
any keypad enabled in the panel.
Check keypad address by pressing and
holding [D] until the security code is
required. Enter 2000 and set the keypad
address. The PCX 46 built in keypad
address MUST be always set to [00].
Make sure in the “Install Keypads and
Readers” menu in Engineer mode the
keypad address set up correctly.
KEYS LOCKED
OUT
a) More than one device
connected at the same address.
b) Too many incorrect key
presses have been entered to
create Code Guessing condition.
a) Correct addressing so that no overlaps.
Then power system down and up again to
correctly reinitialise.
b) Wait 90 seconds for keypad to be re-
introduced onto the system.
8.2.3 Detection Faults
Fault Description Solution
BELL
TAMPER
Tamper fault detected on
connection from SAB
Terminal TR should be at or near 0v.
If not, is Bell Tamper switch closed?
Check Fuse F2 intact, and connections to
SAB.
CASE TAMPER Case tamper switch open Ensure the switch is closed
Code Guessing Up to 13 Invalid key presses have
been entered or 3 invalid tags
have been presented.
Press the X key to clear.
BELL
Fault
Bell or other warning device has
triggered its fault output which is
detected by the PCX control
panel
Correct fault at warning device to restore
the output.
8.2.4 Power Supply Problems
Fault Description Solution
BATTERY FAULT
xxx
Battery not present or Battery
volts low
Note: This indication should be expected
during recharge after a mains failure.
BAT LOAD FAIL Battery Load Test has failed Only displays if option selected. Battery
uncharged or capacity below specification
may need replacing.
BAT CRITICAL Battery being disconnected Protects battery from deep discharge
damage during extended mains failure.
Note: System is about to be powered
down!
MAINS FAIL xxx Mains supply failed System detects mains frequency out of
specification, as well as voltage. Note:
‘AC FAIL’ timer operative
FUSE x FAULT Fuse identified failed,
OR Output protected by fuse
drawing excessive current
Fuse 1 = PGMs, Fuse 2 = BELL
Fuse 3 = AUX, Fuse 4= BUS
Fuse 5 = BATTERY
LOW VOLTS xxx Power supply volts low Battery volts below normal ‘battery fault’
level during mains failure
8.2.5 Engineer Indications
Fault Description Solution
Engineer Access
Denied
Access to Engineer menu NOT
possible, as system is not fully
disarmed.
Ensure that ALL areas are disarmed,
using a suitable user codes / tags at
appropriate keypads / readers.
Check Failed Input Input in fault on attempting to Applies to 24-hour tamper, or other input
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