Carel MCmultizone, User Manual

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27
ENG
“MCmultizone” +030221981 - rel. 2.3 - 09.12.2014
cabinet
distribution
maint
enanc
e
alarms
displayed meaning cause solution reset alarm
relay action notes
high humidity humidity
outside of set
limits value measured
by the probe
greater than the
humidity alarm
threshold check the set parameter manual inactive signal only on
low humidity humidity
outside of set
limits value measured
by the probe
less than the
humidity alarm
threshold check the set parameter manual inactive signal only on
humidity probe
broken or
disconnected humidity probe
broken or
disconnected main humidity
probe
disconnected or
broken check the connection & the operation
of the probe manual active stop
production on
high humidity
limit probe limit humidity
outside of set
limits value measured
by the probe
greater than the
humidity alarm
threshold check the set parameter manual inactive signal only fl ash can only be
reset switching
the unit off
from “set”,
signalled only in
sequence after
other alarms
but not when
forced.
limit probe
broken or
disconnected limit probe
broken or
disconnected limit humidity
probe
disconnected or
broken check the connection & the operation
of the probe manual active stop
production on
slave (2-3-4-5-6)
unit offl
ine
slave unit not
connected to
the pLAN pLAN network
disconnected check connection of pLAN cable to
terminals on controller manual active signal only on
master unit
offl
ine
master unit not
connected to
the pLAN pLAN network
disconnected check connection of pLAN cable to
terminals on controller manual active signal only on
low pressure
alarm insuffi cient air
pressure
insuffi cient air
pressure
check air line pressure manual active stop
production on for ON/OFF
units
compressor alarm from air
compressor compressor fault
alarm check air compressor manual active signal only on
fl ow switch alarm from AHU
fl ow switch no air in AHU
alarm check AHU manual active signal only on
water treatment
system alarm from
water treatment
system water treatment
system fault
alarm check water treatment system manual active signal only on
pressure
sensor faulty or
disconnected pressure
sensor faulty or
disconnected pressure
sensor faulty or
disconnected check pressure sensor manual active stop
production on for proportional
units with air
pressure sensor
pressure off
scale air pressure
outside of set
limits insuffi cient air
pressure
check air supply pressure manual active stop
production on for proportional
units with air
pressure sensor
clock fault clock error backup battery
completely
discharged or
generic clock
fault replace clock manual inactive signal only off
9. TABLE OF ALARMS
When an alarm is activated, the alarm button starts fl ashing
intermittently.
In these conditions, pressing the alarm button once displays the type of
alarm .
In the case of potentially dangerous alarms, the controller automatically
stops production. For some alarm events, the alarm relay is also activated
at the same time as the signal (see the table below).