THOMSON MEC 320, Руководство по эксплуатации

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MEC 320 GENSET CONTROLLER
PM079 Rev 0 07/06/08 13 Thomson Technology
General semi-auto mode description
The unit can be operated in semi-automatic mode. Semi-auto means that the unit will not initiate
any sequences automatically, as is the case with the auto mode. It will only initiate sequences, if
external signals are given.
An external signal may be given in three ways:
1. Push-buttons on the display are used
2. Digital inputs are used
3. Modbus command.
When the gen-set is running in semi-auto mode, the unit will control the speed governor.
The following sequences can be activated in semi-auto:
Command
Description Comment
Start The start sequence is initiated and continues until the gen-
set starts or the maximum number of start attempts has
been reached. The frequency will be regulated to make the
GB ready to close.
Stop The gen-set will be stopped. After disappearance of the
running signal, the stop sequence will continue to be active
in the ‘extended stop time’ period. The gen-set is stopped
without cooling-down time.
Close GB The unit will close the generator breaker, if the mains
breaker is open, synchronize and close the generator
breaker, if the mains breaker is closed.
When AMF mode
is selected, the
unit will not regu-
late after breaker
closure.
Open GB The unit will ramp down and open the generator breaker at
the breaker open point, if the mains breaker is closed.
Close MB The unit will close the mains breaker, if the generator
breaker is open, synchronize and close the mains breaker,
if the generator breaker is closed.
Open MB The unit opens the mains breaker instantly.
Manual
GOV UP
The regulator is deactivated and the governor output is
activated as long as the GOV input is ON.
Manual
GOV DOWN
The regulator is deactivated and the governor output is
activated as long as the GOV input is ON.
It is possible to manually increase and decrease the speed when semi-auto is
selected. When the digital up/down input is activated, then the regulator is
deactivated as long as the manual up/down inputs are activated.