Himoinsa CEA7 User Manual

CEA7 CONTROL UNIT ALARMS | PAGE 43
The measurement of network frequency is carried out on the rst phase. If in that
phase no signal is detected, the frequency measurement is then carried out on
the second phase. Likewise, if in that phase no signal is detected either, the
frequency measurement is then carried out on the third phase.
The detection of the maximum network frequency alarm can be congured
(Alarms table, parameter 92) as follows:
• 0: Not checked.
• 1: Checked and if an error is detected the engine is started.
A maximum network frequency alarm can be associated a debounce time (Alarms
table, parameter 93) during which the network signal frequency must be kept
above the maximum threshold limit set (Thresholds table, parameter 15).
The detection of the maximum network voltage alarm is a genset starting
condition.
MINIMUM NETWORK FREQUENCY
The CEA7 control unit's minimum network frequency alarm is associated with the
condition that the frequency generated by the network is below the minimum
frequency limit set (Thresholds table, parameter 16).
The measurement of network frequency is carried out on the rst phase. If in that
phase no electric signal is detected, the frequency measurement is then carried
out on the second phase. Likewise, if in that phase no electric signal is detected
either, the frequency measurement is then carried out on the third phase.
The detection of the minimum network frequency alarm can be congured (Alarms
table, parameter 94) as follows:
• 0: Not checked.
• 1: Checked and if an error is detected the engine is started.
A minimum network frequency alarm can be associated a debounce time (Alarms
table, parameter 95) during which the network signal frequency must be kept
below the minimum threshold limit set (Thresholds table, parameter 16). The
detection of the minimum network voltage alarm is a genset starting condition.
A maximum network voltage alarm can be associated a debounce time (Alarms
table, parameter 89) during which the network RMS voltage must be kept above
the maximum threshold limit set (Thresholds table, parameter 13). The detection
of the maximum network voltage alarm is a genset starting condition.
MINIMUM NETWORK VOLTAGE
The CEA7 control unit's minimum network voltage alarm is associated with the
condition that the measurement of the network's RMS voltage is lower than the
minimum voltage limit set (Thresholds table, parameter 14).
The phases which are evaluated for the detection of the minimum network
voltage alarm are selected depending on the conguration of the installation
phases (Thresholds table, parameter 1):
• In a single phase conguration network voltage V1N is tested.
• In a two-phase conguration network voltage V12 is tested.
• In a two-phase selector conguration phases 1 and 3 are tested.
• In a three-phase conguration with neutral or three-phase without
neutral, network voltages V12, V23 and V13 are tested.
The detection of the minimum network voltage alarm can be congured (Alarms
table, parameter 90) as follows:
• 0: Not checked.
• 1: Checked and if an error is detected the engine is started.
A minimum network voltage alarm can be associated a debounce time (Alarms
table, parameter 91) during which the voltage measured must be kept below the
minimum threshold limit set (Thresholds table, parameter 14).
The detection of the minimum network voltage alarm is a genset starting
condition.
MAXIMUM NETWORK FREQUENCY
The CEA7 control unit's maximum network frequency alarm is associated with
the condition that the frequency generated by the network is above the maximum
frequency limit set (Thresholds table, parameter 15).

Himoinsa CEA7 Specifications

General

Brand	Himoinsa
Model	CEA7
Category	Control Unit
Language	English