BEKA BA577E, Manual

Page: 26 / 38

26
7. MAINTENANCE when configured as a
Timer
7.1 Fault finding during commissioning
If a BA577E 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 & 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.
BA577E 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
has been
activated.
Enter a value for
5Et t'
other than
zero.
Timer will not
respond to
external input.
Input incorrectly
configured, or
sensor
incorrectly
connected.
Input
configuration
and input
energising link is
correctly fitted
for selected
sensor.
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 BA577E 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 terminals
RS1 & RS2 are
linked which will
inhibit Timer.
Reset timer via
external contact
or by operating
*
and
&
buttons
simultaneously if
local total reset
rE5Et . EnbL
has
been activated.
Remove link.
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
Input
,
5tart5top
,
cycle5
,
up or dn
,
op1
or
op2
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.