A
LARM
M
ONITORING
112-MOBL-3
A
LARM
M
ONITORING
The control unit can control up to 48 alarms. The texts and trigger inputs for alarms 1 to 19 are variable, i.e.
their texts and actuation are determined by the parameterisation program P
ARA
W
IN
. The alarms are actuated
by contact inputs (ports 1 to 14 or free inputs of the relay unit RZ 071-D) or by internal flags (e.g. controller
failures, limit value on an analogue channel too high, etc.). The parameterisation is described in the S
ERVICE
M
ANUAL
.
Alarms can be divided into three groups:
−
Alarms that are monitored only after a delay when the engine has fired (e.g. LOW LUB
OIL PRESSURE
).
They are called
D
ELAYED
. The green
MONITORING ON
indicator shows that they are monitored.
−
Alarms, which are monitored even when the engine is at a standstill, except in operation mode O
FF
, (e.g.
B
ATTERY
U
NDERVOLTAGE
). They are called
U
NDELAYED
.
−
Alarm signals 13 and 14
are
always
monitored, even in operation mode O
FF
.
They are used for alarms
such as L
EAKAGE
. In operation mode O
FF
the audible signal is not switched on, but the alarms are
collected together in common alarms. They act just like normal alarms when any other operation mode
than O
FF
is selected.
The alarms are configured as follows:
−
Alarm is active or locked,
−
Contact is normally open or normally closed,
−
Delayed or undelayed monitoring,
−
Warning or shutdown,
−
In addition for warning alarms: With or without generator cut off and stop after the recooling period in
A
UTO
mode.
The genset is stopped after the recooling period and the automatic control is locked
if the generator is cut off after a warning alarm in the A
UTO
mode.
In case of contact inputs, an alarm is triggered when the corresponding signalling switch closes (normally
open, make contact) or opens (normally closed, break contact). In case of analogue signals an alarm is
triggered, when the actual value is higher than the U
PPER
L
IMIT
(alarm preset for make contacts) or the
actual value is lower than the L
OWER
L
IMIT
(alarm preset for break contacts). Alarms 11 to 14 can
additionally be parameterised as break signals of output relays, i.e., the corresponding relay is activated when
the alarm is inactive.
A
LARM
A
NNOUNCING AND
A
CKNOWLEDGEMENT
As long as no new alarm is waiting for acknowledgement, the A
CTUAL
A
LARMS
group can be selected with
the [
←
] and [
→
] buttons, or by pressing LED T
EST
and the [
→
] button at the same time.
The indicator C
OMMON
A
LARM
(yellow one in the left row of the panel) is flashing when an
unacknowledged alarm is present. The acoustic signal is switched on at the same time. Press the A
LARM
O
FF
button to turn off the acoustic signal and bring up the page of the A
CTUAL
A
LARMS
on the display.
The alarm text is preceded either by <NEW> if the alarm has not been acknowledged or <ACKN> if it has
been acknowledged.
NEW GENERATOR
OVERLOAD
ACKN GENERATOR
OVERLOAD
NO ALARMS
PRESENT
Unacknowledged alarm Acknowledged alarm Display when no alarms are activated
Press the A
LARM
O
FF
button to acknowledge the indicated alarm or to delete a previously acknowledged
alarm if the cause of the malfunction has been removed. When all alarms have been acknowledged, the
C
OMMON
A
LARM
indicator stops flashing and lights up steadily. It starts to flash again when a new alarm is
notified. The C
OMMON
A
LARM
switches off when all alarms have been deleted. Move through the activated
alarms with the [
↑
] and [
↓
] buttons to acknowledge or delete them with the A
LARM
O
FF
button.
alarms with the [
↑
] and [
↓
] buttons to acknowledge or delete them with the A
LARM
O
FF
button.
On the next page (opened by pressing [
→
]) activated alarms are shown in sequence at the rate of one a
second. They cannot be acknowledged or deleted on this page.
On the next page (opened by pressing [
→
]) activated alarms are shown in sequence at the rate of one a
second. They cannot be acknowledged or deleted on this page.
If there are currently no activated alarms, the message –N
O ALARMS
P
RESENT
- is shown when this page is
opened.
If there are currently no activated alarms, the message –N
O ALARMS
P
RESENT
- is shown when this page is
opened.
Alarm Monitoring 112-MOBL-3 / 07-01-25
11 / 18
Changes without further notice reserved.