Nilfisk-Advance CS7000 Service Manual

Hopper System 253Service Manual – CS7000
Hopper Being Lowered
When the operator pushes the button to lower
the hopper, the main machine controller
energizes the K12 contactor by grounding the
control winding of the contactor. This causes
a magnetic eld to pull the normally-closed
contacts open, and at the same time closes
the normally-open contacts. Battery voltage
is now applied through the closed set of K12
contacts to one side of the pump. The other
side of the pump is connected to battery
negative through the normally-closed contacts
of the K11 contactor. This completes the circuit
and causes the pump to run in the “Down”
direction.
Circuit Description
The Following Conditions Must Be Met for the Hopper to be Raised and Lowered
• 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 (battery machines) or jumpered (Diesel and LPG machines).
• The 400-amp Fuse F1 must be closed to provide positive voltage from the Battery to the load side of
Hydraulic Pump Motor Contactor K12.
• 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 J7-12.
• The Auxiliary Contactor K9 must be closed to provide positive voltage to circuit breaker VACC1/CB1.
• The Hydraulic Pump Motor circuit breaker CB8 must closed to provide positive voltage to the load side of
the Hydraulic Pump Motor Contactors K11 and K12.
• The load side of the Hydraulic Pump Motor Contactors K11 and K12 must be connected to battery ground.
• The J2-28 and J2-24 Outputs must provide negative ground to the Hydraulic Pump Motor Contactor coils K11
and K12 respectively when the A1 Main Machine Controller receives a signal from the A3 Control Panel via
the CAN BUS that the operator has pressed the hopper raise or hopper lower button.
K11
At rest
K12
Energized
Hopper
Hydraulic
Pump Motor
Key switch
Main Machine Controller
Control Circuit
Load Circuit
Hopper Down

Nilfisk-Advance CS7000 Specifications

General

Brand	Nilfisk-Advance
Model	CS7000
Category	Floor Machine
Language	English