9
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7 Events and anomalies
7.1 Events
An event is either a change in APM303 status (powering up), or activation of one the 3 buttons, or any change in the PLC status
(e.g. start-up).
The table below lists all the events which can be recorded in the stack.
symbol description
is powered up: the unit is powered up either when the battery is connected, or when the switch on the
front panel is set to position 1.
Starting up in MANUAL mode: the generating set has been started manually, after pressing button .
mode and the generating set has been started up after activation
of the external input, terminal T10 (I02 remote start/stop).
Stopping in MANUAL mode: the generating set has been stopped manually, after pressing button .
mode and the generating set has been stop after deactivation of
the external input, terminal T10 (I02 remote start/stop).
AUTO mode has been activated: the unit recognises that the button has been pressed, the AUTO LED light is
fixed, the generating set can start up on activation of the "remote start/stop" input (terminal T10).
AUTO mode has been deactivated: the unit recognises that the button has been pressed, the AUTO LED is off,
the generating set cannot start up on activation of the "remote start/stop" input (terminal T10).
Generating set stabilised (ready to generate):This event is recorded if the minimum stabilisation time has elapsed and
if electrical parameters U and F are within the setting range.
Automatic start-up when battery low: the
mode, the generating set has been started up, as low
battery voltage has been detected.
Automatic shutdown after battery recharge: the
mode, the generating set has been stopped, as
the delay for battery charging has elapsed.
Modbus order received: a remote order has been received by the
(see Modbus manual also).
7.2 Anomalies
An anomaly can be an alarm or a fault.
anomaly if generating set stopped if generating set operating
status of
generating set start-up possible no generating set shutdown
generating set start-up not possible immediate shutdown of generating set
flashing
7.2.1 Appearance of an alarm
LED is flashing.
the exclamation mark symbol opposite flashes in
the top right of the screen "1-Main" (figure 13).
The alarm is recorded in the stack of events and
anomalies (see section ‘Events and anomalies,
screen 6’).
Figure 13 - appearance of an alarm
7.2.2 Clearing an alarm
An alarm which is active (or present) cannot be cleared manually. it automatically becomes inactive when the problem which
caused the alarm disappears (e.g.: the generating set overload disappears when there is a reduction in the load).
When the alarm switches to inactive, the
LED goes off, the exclamation mark symbol disappears from the
"1-main" screen, the alarm remains visible on the "6-events and anomalies" screen.
description status
screen shows "
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