PEC017
5/3/2018
Page
55
of
105
(N080)
. If the vehicle exceeds this speed limit by more than 6 MPH, the
engine will exit PTO Mode. This may happen in a downhill scenario or when
an external force or input (such as an incline or pushing/towing the vehicle)
causes the vehicle speed to increase.
o
PTO Mode Vehicle Speed Limit (
must be at least 6MPH less
than
Minimum Speed to Disable Cruise Control (
. See the
section on Cruise Control for more detailed information on avoiding
conflicts between PTO Mode and Cruise Control.
NOTE: When an interlock condition occurs, the engine will exit PTO Mode and
will disable engine speed controls and protections, but will not cause the PTO
device to mechanically disengage from the powertrain. The PTO device will
only be mechanically disengaged by toggling the PTO On/Off Switch.
When all interlock conditions are removed, and the engine is receiving a signal that
the PTO is mechanically engaged, the engine will return to PTO Mode automatically
and the engine speed will return to the
PTO Mode Minimum Engine Speed
. If
the Resume/Decel switch is the first switch pressed after entering PTO mode, the
engine speed will increase to the previously stored engine speed prior to exiting PTO
Mode. Otherwise, the engine speed can be increased with the Set/Accel switch.
PTO Mode Limits and Set Points
PTO Engine Speed Control has many programmable parameters that may be
adjusted to tailor PTO Mode performance to protect specific PTO-driven equipment
from damage or misuse.
When PTO switch is in the ON position, if the PTO device is mechanically engaged
and the interlock conditions are met, the engine enters PTO Mode automatically and
the engine speed will increase to the
PTO Mode Minimum Engine Speed (
.
Maximum Engine Speed using Switch Inputs (
may be programmed to prevent
the engine from exceeding a specified RPM while using the Set/Accel or
Resume/Decel switches to protect speed sensitive PTO-driven equipment from
damage due to overspeed while changing the target engine speed. Likewise,
Maximum Engine Speed using Pedal Input (
defines the maximum achievable
engine speed while using the accelerator pedal. These parameters can be
programmed independently, but
Maximum Engine Speed using Pedal Input (
must be greater than or equal to
PTO Mode Minimum Engine Speed (
).
For
PTO Mode configured with remote controls,
Maximum Engine Speed using Switch
Inputs (
should be programmed as the customer’s absolute maximum engine
speed.
The engine speed can be controlled by briefly pressing, or pressing and holding the
specified switches. With the PTO Mode configured for in-cab controls, these are the
cruise control Set/Accel and Resume/Decel switches. In the case of the remote PTO
control station mode, these switches are provided by the body builder and are
functionally equivalent to the in-cab control switches.
In PTO Mode, a throttle control input is available. When PTO Mode controls are
configured in the cab, the accelerator pedal is used for throttle control in PTO Mode.
For a remote PTO Mode control station, this would be supplied by the body builder
and may be a pedal, hand lever, or similar input device.
Содержание MX Series
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