BEKA BA377E, Manual

Page: 47 / 62

47
11. MAINTENANCE when configured as a
Clock
11.1 Fault finding during commissioning
If a BA377E fails to function as a Clock during
commissioning the following procedure should be
followed:
Symptom Cause Check:
No display No power supply, or
incorrect wiring.
Note: Terminals 2 &
RS2 are
interconnected
within the
instrument.
That there is
between 10 and
28V on terminals 1
& 2 with terminal 1
positive.
That there are no
connections to
terminals
3, 4, 5 & 6.
Configuration menu
does not
correspond with the
Clock section of this
manual.
BA377E is
configured as a
Timer.
That
FunCtion
in
configuration menu
is set to CLoC not to
ELAP5E
.
Clock display
flashes
00 : 00 : 00
Local time has not
been entered.
Enter the local time
in the
5Et
function
of the instrument
configuration menu.
Control output(s) do
not function.
Control outputs
have not been
enabled.
Enable Control
Output(s) in the
configuration menu.
Clock will not start Reset terminals
RS1 and RS2 are
connected together
and the clock is
resetting.
If reset annunciator
on display is
activated,
disconnect link
between RS1 and
RS2.
Unable to enter
configuration menu.
Incorrect security
code
That the correct
security code is
being used.
Contact BEKA if
code is lost.
11.2 Fault finding after commissioning
ENSURE PLANT SAFETY BEFORE
STARTING MAINTENANCE
Live maintenance is permitted on
intrinsically safe equipment installed
in a hazardous area, but only certified
test equipment should be used unless
a gas clearance certificate is available.
If a BA377E fails after it has been functioning
correctly as a Clock, the following table may help to
identify the cause of the failure.
Symptom Cause Check:
No display No power supply That there is
between 10 and
28V on terminals 1
& 2 with terminal 1
positive.
Clock display
flashes
00 : 00 : 00
Instrument power
supply has been
interrupted and
local time has been
lost.
Enter the local time
in the
5Et
function
of the instrument
configuration menu.
Control output(s) do
not function.
Control outputs
have not been
enabled.
Enable Control
Output(s) in the
configuration menu.
Clock will not start Reset terminals
RS1 and RS2 are
connected together
and the clock is
resetting.
If reset annunciator
on display is
activated,
disconnect
connection between
RS1 and RS2.
Unable to enter
configuration menu.
Incorrect security
code
That the correct
security code is
being used.
Contact BEKA if
code is lost.
If this procedure does not reveal the cause of the
fault, it is recommended that the instrument is
replaced.
11.3 Servicing
We recommend that faulty BA377E Clocks are
returned to BEKA associates or to our local agent for
repair.
11.4 Routine maintenance
The mechanical and electrical condition of the
instrument should be regularly checked. Inspection
frequency should be chosen to suit the
environmental conditions.
11.5 Guarantee
Instruments which fail within the guarantee period
should be returned to BEKA associates or our local
agent. It is helpful if a brief description of the fault
symptoms is provided.