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3.7.
Measures against Faults
Display:
Possible Reason:
Measures against Faults:
LED
Fault
Line disconnection
Insulation defect
Defective detector
Wrong connected line
A detector signal has exceeded
24.5 mA.
(Attention! Danger!)
Measure signal current
Check connection
Check gas concentration
separately, e.g. with portable
detector
Check detector and replace,
if necessary
All LEDs
Fault
are on and
LED
System failure
is
blinking
Timeout for
Ignore
communication faults with
relay modules
Turn the rotary switch into
position 0 and reset both
controller
Part of LEDs
Fault
are on;
no LED for system
information is on.
An AEM is defective or not
connected.
An AEM is addressed wrong.
Check connection between
AEM and CM
Check 24V power supply
Check address of AEM
Replace AEM
Check configuration with
software
ConfigPro
Check detector and replace,
if necessary
All LEDs
Over
- and
Under scale
are blinking;
the remaining LEDs for
channel and system
information are off.
Communication error between
CM and display
(In this case, safety functions are
fully maintained by the
relays.)
Check connection between
CM and display
LED
Single mode
is
blinking.
Malfunction of controller B
Evaluate error code on the
CM
LED
Single mode
is
blinking; all LEDs
Fault
are blinking.
Malfunction of controller A
Evaluate error code on the
CM
LED
Fystem failure
is
blinking; all LEDs
Fault
are on.
Both controllers of the CM are
defective.
Interruption of connection to all
AEM
Interruption of connection to at
least one relay module
Evaluate error codes on the
CM
Check connection between
AEM and CM
Check connection between
relay module and CM
Analog outputs: 0 mA or 0
V; channel LEDs
Fault
are
off.
Defective AAM
Interruption of connection
between AAM and CM
Replace AAM
Check connection between
AAM and CM
LED
Battery
is blinking.
Emergency power supplied
Check mains supply
All LEDs
Fault
and
Operation
are blinking.
Power failure logic in operation
–
no malfunction!
After the preset time for
power failure logic, the
system automatically returns
to normal operation.
Wrong indication of
date/time after power
failure
Buffer battery on the CM is
exhausted (expected life time
10 years)
Replace battery
Adjust setting via
ConfigPro
Summary of Contents for MX62
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