Allison Transmission 3000 Series User Manual

load.SESSisnotavailablewithacceleration-basedDSS.Inaddition,
DSSusesaninclinometer/accelerometerintheTCMtorenethe
selectionoftheappropriateshiftschedulebasedonvehicleoperating
requirements.
TheTCMwillinitializeinthesamemode,EconomyorPerformance,
thatitwasinwhenlastshutdown.Thevehicleloadisre-estimated
duringthersthighthrottleaccelerationandtheappropriatemodeis
commanded.ThemodeisalsoresettoPerformancewhenoneofthe
followingisdetected:
–Anenginede-ratecondition
–Thelossoftorquedatafromtheengine
Inadditiontoprovidingthecapabilitytoautomaticallyswitchbetween
performanceandeconomyschedules,theavailabilityofeconomymodein
DSSisselectableasaCMCwithAllisonDOC
®
withintheshiftcalibrationas
follows:
Table4–2.DSSECONOMYMODE
CMCSettingSelection
Description
1Reserved1
Reservedforfutureuse
2Reserved2
Reservedforfutureuse
3LowThissettingkeepsthevehiclein
economymodewhenlightlyloaded
oronlowupgrades.Thevehiclewill
alwaysbeinperformancemodeif
carryingaloadorwhennegotiating
moderategrades.
4Medium
Thisisthedefaultvalue.Thissetting
keepsthevehicleineconomy
modemorethanthedefaultsetting.
Whenthevehicleisempty,even
onmoderategrades,economy
modeisnormallyinuse.Likewise,
economymodealsoisusedon
nearly-levelgradeswithmoderate
loads.Performancemodewillbe
commandedwhenheavilyloaded
orwithmoderateloadsonlarger
grades.
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Allison Transmission 3000 Series Specifications

General

Type	Automatic Transmission Controller
Control Module	Integrated
Shift Energy Management	Yes
Number of Gears	6
Torque Converter	Yes, with lock-up clutch
Retarder	Optional
PTO Provision	Yes
Input Voltage	12V or 24V
Communication Protocol	SAE J1939
Operating Temperature Range	-40°C to +85°C