Ford Electric Ranger 1998 Student Manual page 24

LESSON 1: VEHICLE OVERVIEW
INPUTS
Motor Temperature
Sensor
Emergency Power Off
(EPO)
Accelerator Pedal
Sensors 1-3
Anti-Lock Brake
Module
Brake Pedal Sensor
Digital Transmission
Range (DTR) Sensor
Charge Cord Plugged
In Signal
Oil Pressure Sensor
1-16
•
The IGBTs are used to switch on and off the three motor phases.
– As they switch on and off, the IGBTs produce voltage spikes
that have the potential to damage the TIM.
– Capacitors are used as a filters to protect the TIM and maintain
traction bus voltage during IGBT switching.
– These capacitors retain traction battery voltage and provide
current capability for instantaneous torque.
NOTE: The TIM is equipped with a bleed down system which
ensures that the capacitors are discharged to less than 50 volts within
two minutes after the driver's key is turned to the OFF position.
•
Be sure to allow for capacitor bleed down time before attempting
maintenance or repair.
TRACTION
INVERTER
MODULE
(TIM)
OUTPUTS
Vehicle Speed Signal
Emergency Power Off
(EPO)
Electric Motor/
Transaxle
Precharge Contactor
Relay
Main Contactor Relay
Oil Pump Relay
1998 Ranger EV New Model Training