Nilfisk-Advance CS7000 Fuel Cell EcoFlex, Service Manual

Page: 303 / 440

Scrub System 303 Service Manual – CS7000
Circuit Description
The Following Conditions Must be Met for the Scrub System To Operate
• The
Hopper Interlock Switch S3
must be closed.
• There must be positive voltage to the
J7-1 Interlock Input
. For this to happen:
– The
Seat Switch S9
must be closed.
– The
Safety Relay K14
on the
Steer By Wire Controller A5
must energize the coil to close the
Safety Relay
K14
contactor.
– The
Emergency Stop Switch S15
must be closed.
– The
Battery Interlock S13
must be closed.
• The
400-amp Fuse F1
must be closed to provide positive voltage from the
Battery
to the load side of
Auxiliary
Contactor K9
.
• The
Ignition Switch S14
must be closed to provide positive voltage to the
Auxiliary Contactor K9
coil. The
J2-14 Output
on the
A1 Main Machine Controller
provides ground to the
Auxiliary Contactor K9
coil when the
Ignition Switch S14
provides an input to the
Key Switch Input J7-13
.
• The
Auxiliary Contactor K9
must be closed to provide positive voltage to circuit breakers
VACC1/CB1
and
VACC2/CB2
.
• Circuit breaker
VACC1/CB1
must be closed to provide positive voltage to
Solution Valve L1
.
• Circuit breaker
VACC2/CB2
must closed to provide positive voltage to the
Left Brush Motor Contactor K1
, the
Center Brush Motor Contactor K2
and the
Right Brush Motor Contactor K3
.
• The
J2-25
,
J2-26
and
J2-27 Outputs
on the
A1 Main Machine Controller
must provide ground to the
Left Brush
Motor Contactor K1
coil, the
Center Brush Motor Contactor K2
coil and the
Right Brush Motor Contactor K3
coil
respectively. The
J2-25
,
J2-26
and
J2-27 Outputs
provide a ground under the following conditions:
– The
A1 Main Machine Controller
must receive a signal from the
A3 Control Panel
via the CAN BUS that
the operator has pressed the scrub switch.
– The
A1 Main Machine Controller
must receive a signal from the
A2 Drive Controller
via the
CAN BUS
that
the machine is moving forward or reverse.
• The
150-amp Fuse F2
must be closed to provide positive voltage from the
Battery
to the load side of
Contactors K1
,
K2
and
K3
.
• The
Brush Motors M2
,
M3
and
M4
must have connections to battery ground
B-
.
Scrub Deck Actuator Motor
• The
J2-10
and
J2-11 PWM Outputs
from the
A1 Main Machine Controller
provide voltage to the
Scrub Deck
Actuator Motor M11
. The output polarity determines whether the
Scrub Deck Actuator Motor
lowers or raises
the scrub deck.
• When the
Retract Limit Switch S1
closes, it connects the
J7-21 Input
to ground which signals the
A1 Main
Machine Controller
that the scrub deck has reached its upper limit. The
A1 Main Machine Controller
will
switch off the
J2-10
and
J2-11 PWM Outputs
to stop the upward scrub deck travel.