CEM7 CONTROL UNIT INPUTS AND OUTPUTS |
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STARTED ENGINE OUTPUT (MA). DIGITAL OUTPUT
The started engine output (MA) of the CEM7 control unit is activated when any
started engine condition is detected and remains active while the engine is
running. The started engine output (MA) is deactivated as soon as the engine
stopping process begins; said process includes the engine cooling interval
(Times table, parameter 11) during the stopping process.
ELECTRONIC PROTECTION OUTPUT (SC). DIGITAL OUTPUT
The electronic protection output (SC) is activated when any alarm that stops the
engine is detected. The output remains activated until all the alarms that cause
the engine to stop disappear and are reported.
5.6 PROGRAMMABLE OUTPUTS
The CEM7 control unit has 3 programmable outputs with operation which can be
configured to indicate certain states (Settings table, parameters 1 to 3) and a
relay output (Settings table, parameter 4). The possible configurations that are
permitted with the programmable outputs are:
INHIBITED OUTPUT
The programmable outputs configured as inhibited output do not respond to any
action or state as they are permanently disabled.
OUTPUT PROGRAMMED ACCORDING TO THE STATE OF AN INPUT
The programmable outputs (associated with a programmable input) are activated
when an associated input is detected.
Possible configurations of associated inputs include the following values:
•
Fuel reserve input
•
Water level input
•
Programmable input 1
•
Programmable input 2
•
Programmable input 3
ALARM OUTPUT (AL). DIGITAL OUTPUT
The alarm output (AL) is responsible for communicating the different states of
the CEM7 control unit. The AL output simultaneously activates the flashing of the
Reset key LED and display module buzzer of the CEM7 control unit. This output
monitors the following states of the CEM7 control unit:
•
External start of the control unit.
Before starting the control unit
when commanded by a programmable input associated with AE
mode, the control unit's alarm output (AL) is activated for 5 seconds.
The activation of the alarm output (AL) due to an external start of the
control unit can be inhibited (Regulations table, parameter 31).
•
Control unit errors.
Given an error which is active or pending
notification by the user, control unit alarm output is activated for
a maximum programmable time (Times table, parameter 14). The
errors that activate the AL output are both alarms that cause the
engine to stop and warnings that do not cause the engine to stop.
Depending on how the AL output has been programmed (Regulations
table, parameter 31, acoustic alarm field):
For an AL outlet that has been programmed as an acoustic signal (Regulations
table, parameter 31, acoustic alarm, field value 0), when the user presses the
RESET key:
•
Continuous activation of the AL output (value 0 in Times table,
parameter 14): the AL output is disabled, providing there is no active
error or warning.
•
Timed activation (value in seconds of the activation of the output in
the Times table, parameter 14): the AL output is disabled the first
time the RESET key is pressed or once the output activation time is
exceeded.
When the AL output is programmed to signal errors (Regulations table, parame-
ter 31, acoustic alarm field, value 1), when the user presses the RESET key, the
buzzer of the interface is disabled but the AL output activation is maintained as
long as any active genset alarm remains in effect or pending notification.
