FMON10JEN 07.04.2017 Rev. 10J
50 (50)
Common alarms (C)
Relays are common alarm relays. Relay is in alarm mode when one or several flowmeters of the Monitor are
in alarm mode. Every relay has a fixed operation mode.
Table 16 Common alarms (C), relay operation and screw terminals
Relay nr Operation Screw termi-
nals
Description
1 Low and high level alarm 21, 22
Relay is in alarm mode when one or several
flowmeters are in alarm mode i.e. yellow or
red led is lit.
2 Pre-alarm, low and high 23, 24
Relay is in alarm mode when one or several
flowmeters are out of the nominal value
range i.e. the green led in the middle is off.
3 Low level alarm 25, 26
Relay is in alarm mode, when one or several
flowmeters are in low level alarm mode i.e.
red led is lit.
4 High level alarm 27, 28
Relay is in alarm mode, when one or several
flowmeters are in high level alarm mode i.e.
yellow led is lit.
5 Pre-alarm, decreasing 29, 30
Relay is in alarm mode when the flow of one
or several flowmeters has decreased from
the nominal value i.e. lower green or red led
is lit.
6 Pre-alarm, increasing 31, 32
Relay is in alarm mode when the flow of one
or several flowmeters has increased from
the nominal value i.e. higher green or yellow
led is lit.
7 No flow -alarm 33, 34
Relay is in alarm mode when the flow of one
or several flowmeters is less than 0,05 l/min.
8 not in use 35, 36 not in use
9 not in use 37, 38 not in use
10 not in use 39, 40 not in use
Alarm delay is set by FIL-values in the same way as for the common alarm relay on Group electronics. FIL-
value can be set individually for each flowmeter. FIL-value does not affect on pre-alarms.
Setting of pre-alarm limits, see paragraphs 9.5.4 Pre-alarm limit.
In mode C, when fault relay nr 11 is in alarm mode, also relays 1 to 7 are in alarm mode despite
what the flow rate is.
Fault message
Relay nr 11 on the module indicates faults the Monitor has detected. This relay helps in detecting fault alarms
from flow alarms. For example, when power failure occurs, flow status cannot be determined, but relay nr 11
is then in alarm state.
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