Oldham MX62, Инструкция по установке и эксплуатации

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3.7. Measures against Faults
Display: Possible Cause: Measures against Faults:
LED for ‘fault’ Line disconnection
Insulation defect
Defective transducer
Wrongly connected line
A transducer has exceeded
24.5mA.
(Attention! Danger!) Measure signal current
Check connection
Check gas concentration sepa-
rately
Exchange transducer
Part of the LEDs for
‘fault’ is on and another
part is off;
no LED for system in-
formation is on. An analog input module is de-
fective or not connected.
Several transducers have, for
example, been contaminated. Check connection between ana-
log input module and controller
module
Check 24V supply
Check address of analog input
module
Replace analog input module
Check configuration with PC
software ConfigPro
All LEDs for excess of
measuring range and in-
sufficient signal are
blink- ing; the remaining
LEDs for channel and
system information are
off Communication error between
controller module and display
(In this case, safety functions
are fully maintained via the
relays.) Evaluate fault indication on the
controller module
Check connection between con-
troller module and display
LED for ‘single mode’ is
blinking Malfunction of controller B Evaluate fault indication on the
controller module
LED for ‘single mode’
and all LEDs for ‘fault’
are blinking Malfunction of controller A Evaluate fault indication on the
controller module
LED for ‘system failure’
is blinking Both controllers of the con-
troller module are defective.
Interruption of connection to
all analog input modules
Interruption of connection to
at least one relay module Evaluate fault indication on the
controller module
Check connection between ana-
log input module and controller
module
Check connection between re-
lay module and controller
module
LED for ‘battery’ is
blink-ing Emergency power supply Check mains supply
All LEDs for ‘fault’ and
‘operation’ are blinking Power failure logic in opera-
tion – no malfunction! After the time preset for power
failure logic, the system auto-
matically turns to normal op-
eration.