Himoinsa CEM7 User Manual

CEA7 CONTROL UNIT ALARMS | PAGE 44
NETWORK CONTACTOR SWITCHING FAILURE
The CEA7 control unit's network contactor switching failure alarm is generated
when the network contactor is activated through the CR relay of the measurements
module and no activation takes place through the programmed input (ENT1,
ENT2, ENT3, ENT4 or ENT5) associated with the network contactor conrmation
mode (Settings table, parameter 5) during a set time (Times table, parameter
13). The status of this programmable input associated to the conrmation mode
of the network contactor must be validated during a time interval (Times table,
parameter 19, 20, 22, 23 or 24) for stabilisation (rebounce) before being
validated.
The detection of the network contactor switching failure alarm can be congured
(Alarms table, parameter 100) as follows:
• Not perform the detection.
• Perform the detection and before activation start the genset.
GENSET CONTACTOR SWITCHING FAILURE
The CEA7 control unit's genset contactor switching failure alarm is generated
when the genset contactor is activated through the CG relay of the measurements
module and no activation takes place through the programmed input (ENT1,
ENT2, ENT3, ENT4 or ENT5) associated with the genset contactor conrmation
mode (Settings table, parameter 6) during a set time (Times table, parameter
13). The status of this programmable input associated to the conrmation mode
of the genset contactor must be validated during a time interval (Times table,
parameter 19, 20, 22, 23 or 24) for stabilisation (rebounce) before being
validated.
The detection of the genset contactor switching failure alarm can be congured
(Alarms table, parameter 102) as follows:
• Not perform the detection.
• Perform the detection and before activation stop the engine with
cooling.
INCORRECT NETWORK PHASES SEQUENCE
The CEA7 control unit’s incorrect network phases sequence alarm is associated
to the fact that the genset voltage inputs of each phase are in order (phases 123
for direct conguration of sequences —value 0, Regulations table, parameter
34— or phases 321 for inverse conguration of sequences —value 1,
Regulations table, parameter 34—). The incorrect network phases sequence
alarm is only managed when the control unit is congured to work three-phase
with neutral or three-phase without neutral.
The detection of the incorrect network phases sequence alarm can be congured
(Alarms table, parameter 96) as follows:
• 0: Not checked.
• 1: Checked and if an error is detected the engine is started.
An incorrect network phases sequence alarm can be associated a debounce
time (Alarms table, parameter 97) during which an incorrect order in the maximum
network voltages must be detected.
The detection of the incorrect network phases sequence alarm is a genset
starting condition.
NETWORK SIGNAL FAILURE
The CEA7 control unit's network signal failure alarm is generated if network
voltage is not detected in any phase.
The detection of the network signal failure alarm can be congured (Alarms table,
parameter 98) as follows:
• 0: Not checked.
• 1: Checked and if an error is detected the engine is started.
A network signal failure alarm can be associated a debounce time (Alarms table,
parameter 99) during which no network signal must be detected during any
phase before activating the alarm.
The detection of the network signal failure alarm is a genset starting condition.

Himoinsa CEM7 Specifications

General

Brand	Himoinsa
Model	CEM7
Category	Control Unit
Language	English