Service Manual

ELECTRICAL SYSTEMS
TimeCutter™ Z Service Manual 8 - 3
8
The safety interlock system consists of a series
of switches which prevent the unit from starting
unless:
• The parking brake is engaged.
• The PTO switch is in the off position.
• The motion control handles are in the neutral
lockout position.
There is also a kill relay which de-energizes and
stops the engine if the motion control handles are
pulled in while the parking brake is engaged.
(A) Brake Switch
(B) Neutral Switch
(C) Seat Switch
A
B
B
C
There are two pair of contacts in the brake
switch. One pair (gray and violet) is wired in
series with the PTO switch. When the PTO
switch is in the off position, power from the “I”
terminal of the ignition switch flows through the
PTO switch, then through this pair of brake
switch contacts to energize the kill relay.
The second pair of contacts (yellow and violet)
are wired in series with the seat switch. When
the operator is on the seat, power from the “X”
terminal of the ignition switch flows through the
seat switch, then through this pair of contacts to
energize the kill relay.
The neutral switch contacts are closed when the
motion control handles are in the out position
which locks them in the neutral position.
SAFETY INTERLOCK SYSTEM
0702-0801
0702-0802
0702-0803
Interlock Components