Download spec A-C

BGEL CONTROL OPERATION
This operation description applies to BGEL series
generator sets. The schematic diagram shown in Figure 7-4 is intended as an example to help follow the
circuit description. Always refer to the specific wiring
diagram that corresponds to the model and spec
number of the generator set when troubleshooting
problems.
Starting
Placing the Start/Run/Stop switch in the Start position connects battery ground (B-) to the K4 start
relay. This energizes the K4 relay which closes two
sets of contacts (K4-2,8 and K4-9, 15) that connect
battery positive (B+)to the generator field windings
(CR4 +), T1 ignition coil, E3 fuel solenoid valve, K5
stop relay, and K1 start solenoid. Connecting B+.as
described producesthe following control responses:
0
Opening the K3-1,8 contacts disconnects B+ (CR4
positive terminal) from the generator field
windings.
Opening the K3-9,16 contacts disconnects B+ from
the K4 start relay causing it to de-energize.
De-energizing the K4 relay opens the K4-2,8 and K4-
9,15relay contacts. Opening the K4-2,8 contacts has
Energizes the ignition coil (Tl) so it can begin producing an ignition spark when the breaker points
open and close.
Energizes the fuel solenoid valve (E3) which opens
to allow fuel to flow to the carburetor.
0
solenoid valve.
Closing the K3-2,8 contacts connects B+ to the
run light, time meter, and battery condition meter.
Flashes the field to ensure that there is adequate
residual magnetism to induce voltage build up.
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Closing the K3-9,15 contacts (which parallel the K42,8 contacts) provides an alternate pathway for
supplying B+ to the T1 ignition coil and E3 fuel
Energizes the K5 stop relay to open the K5
contacts.
Energizes the K1 start solenoid to close the K1
contacts.
no effect since they are in parallel with the closed
K3-9,15 contacts which connect B+ to the ignition coil
and the fuel solenoid. Opening the K4-9,15 contacts
disconnects B+ from the K1 start solenoid. Deenergizing the K1 start solenoid disconnects B+ from
the starter motor which stops cranking.
When the S1 switch is placed in the RUN position, the
engine continuesto run. Relays K2 (generatorrelay),
K3 (run relay), and K5 (stop relay) are energized.
while relays K1 (start solenoid) and K4 (start relay)
are de-energized. Generatorvoltage is rectified to DC
by the CR1 power rectifierand supplied to the battery
through the charge resistor (R6). This charges the
battery at a constant rate (1 ampere maximum) during set operation.
Opening the K5 stop relay contacts opens the circuit
that holds the K3 run relay grounded. This allows the
K3 relay to energize when connected to B+.
Closing the K1 startsolenoid contactsconnects B+to
the starter motor. This energizes the starter motor
which begins to crank the engine to initiate starting.
Starter Lock-out-Run
When the engine starts, the low oil pressure switch
(S2)closes to connect battery ground (B-) to the K3
run re1ay.A~theenginecomes uptospeed, ACoutput
voltage from the generator is suppliedto the K2 generator relay. This energizes the K2 relay which closes
one set of contacts (K2-23)that connect B+ to the K3
run relay.This energizesthe K3 relay which opens two
sets of contacts and closes two sets of contacts to
produce the following control responses.
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by any means, is strictly prohibited.
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