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7. MAINTENANCE when configured as a Timer
7.1
Fault finding during commissioning
If a BA578E fails to function as a Timer during
commissioning the following procedure should be
followed:
Symptom
Cause
Check:
No display
No power
supply, or
incorrect wiring.
Note: Terminals
2, 6, 10 & RS2
are
interconnected
within the
instrument.
That there is
between 10 and
30V on
terminals 1 & 2
with terminal 1
positive.
Instrument
configuration
menu does not
correspond with
Timer section of
this manual.
BA578E may be
configured as a
clock.
That
FunCtion
in configuration
menu is set to
ELAP5E
not to
CloC
.
Timer will not
start.
Timer not reset
Set time
5Et t
has not been
entered.
Reset timer via
external contact
or by operating
*
and
&
buttons
simultaneously
if the local total
reset
r5Et enbL
function has
been activated.
Enter time other
than zero for
5Et t'
.
Timer will not
respond to
sensor inputs.
Input A and/or
Input b
incorrectly
configured, or
sensor
incorrectly
connected.
Input A
and
input b
configuration
and that input
energising
link(s) are
correctly fitted
for selected
sensors.
Control
output(s) do not
function.
Control outputs
have not been
enabled.
Enable Control
Output(s) in the
configuration
menu.
Unable to enter
configuration
menu.
Incorrect
security code
That the correct
security code is
being used.
Contact BEKA if
code is lost.
7.2
Fault finding after commissioning
ENSURE PLANT SAFETY BEFORE
STARTING MAINTENANCE
If a BA578E fails after it has been functioning
correctly, 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
30V on
terminals 1 & 2
with terminal 1
positive.
Timer will not
start.
Timer not reset
Reset timer via
external contact
or by operating
*
and
&
buttons
simultaneously if
local total reset
rE5Et
.
EnbL
has
been activated.
Control
output(s) do not
function.
Control Outputs
have not been
enabled.
Enable Control
Output(s) in the
configuration
menu.
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.
Note:
If configuration changes are made to any of
the following functions the Timer will be
forced into a fail safe idle condition. This
stops the Timer in the state it achieves
when it has timed-up to
5et t
or timed-down
to
0000
. The Timer must be reset before it
can be restarted.
Input A
,
Input b
,
5tart5top
,
cycle5
,
up or dn
,
op1
and
op2
.
