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nominal value.
6.2 TESTER. DESCRIPTION OF THE FUNCTIONS
The most important input or output signals can be measured in real time using the
TESTER function of the console. The Console acts as a multimeter able to read volt-
age, current and temperature. The following definition listing shows the relative meas-
urements :
1) BATTERY VOLTAGE: level of battery voltage measured at the input to the key
switch.
2) BATTERY CHARGE: the percentage Charge level of the battery.
3) MOTOR VOLTAGE: the voltage appearing across the drive motor. It is measured
between B+ and VMN.
4) MOTOR CURRENT: the current flowing in the drive motor armature.
5) FIELD CURRENT: the current flowing in the drive motor field winding.
6) VMN: the voltage effectively dropped across the MOS. It is measured between
-BATT and VMN.
7) TR. CHOPPER TEMP: the temperature measured on the aluminum heat sink
holding the MOSFET devices.
8) ACCELERATOR: the voltage of the accelerator potentiometer wiper (CPOT).
The voltage level is shown on the Left Hand Side of the Console Display and the
value in percentage is shown on the Right Hand Side.
9) FORWARD SWITCH: the level of the Forward direction digital entry MA (pin E3).
ON/+ VB = active entry of closed switch.
OFF / GND = non active entry of open switch.
10) BACKWARD SWITCH: the level of the Reverse direction digital entry MI (pin E2).
ON/+ VB = active entry of closed switch.
OFF / GND = non active entry of open switch.
11) ENABLE SWITCH: the level of Enable Switch digital input.
ON/+ VB = active entry of closed switch.
OFF / GND = non active entry of open switch.
12) SEAT SWITCH: the level of the Seat Microswitch digital entry (pin E6).
ON/+ VB = active entry of closed seat switch.
OFF/ GND = non active entry of open seat switch.
13) HAND BRAKE: the level of the Handbrake Microswitch (pin B5).
ON/+ VB = active entry of Handbrake switch.
OFF/ GND = non active entry of microswitch.
14) CUTBACK SWITCH 1: the level of the Speed Reduction 1 Microswitch (pin E4).
ON/ +12 = active entry of speed reduction microswitch.
OFF/ GND = non active entry of microswitch.
15) CUTBACK SWITCH 2: the level of the Speed Reduction 2 Microswitch (pin B4).
ON/ +12 = active entry of speed reduction microswitch.
OFF/ GND = non active entry of microswitch.
