Komatsu 730E - Operating on Trolley

Operation - Section 30 OM3070
Page 30-20 Operating Instructions
NOTE: The grid blower motor will operate at all
speed settings except maximum setting. Maximum
efficiency is obtained when the truck is operated at
the maximum setting.
Operating On Trolley
1. There are a number of preset speed levels
available for the truck's operation while operat-
ing in the trolley mode. Once on trolley, operat-
ing at the maximum speed setting, the operator
can slow the speed of the truck by switching to
a lower speed setting. The actual speed setting
will be shown by the number of speed level indi-
cators lit. At the lowest setting (1), one will be lit,
at the maximum setting, all will be lit.
2. If stopping or rapid slowing is required while on
trolley, release the throttle and depress the
retarder and/or brake pedal as necessary.
Either will lower the pantograph and the truck
will switch back to diesel mode.
3. If the current leakage circuit detects a short
between the overhead trolley system and the
truck chassis, the pantographs will lower and
the truck electrical controller will switch back to
diesel mode.
Keep the throttle pedal pressed fully while cycling
onto trolley assist. The trolley controller will automati-
cally reconnect the motors for trolley operation. A
slight hesitation will be noted during this operation.
While on trolley the operator must keep his foot on
the accelerator pedal in case the trolley system
would drop out and the drive system would go back
to diesel power. This will happen automatically so the
operator should be prepared if it should occur.
TROLLEY SPEED BASED ON LINE VOLTAGE INPUT
Master Control
Lever Position
Overhead
Panel Light
Trolley Speed With
1400 VDC Input
Trolley Speed With
1500 VDC Input
Trolley Speed With
1600 VDC Input
1 Low 7.6 - 8.1 mph 8.6 - 9.1 mph 9 - 10.0 mph
2 Medium 8.9 - 9.3 mph 9.9 - 10.2 mph 10 - 11 mph
3 High 11.0 - 11.1 mph 11.9 - 12.1 mph 12- 13 mph
4 Maximum 12.7 mph 13.7 mph 15 mph
NOTE: Operators should be aware that the above speeds may not always be obtained. Many ordinary
conditions can cause the speeds to be less.
Some conditions are:
Line voltage may drop at times due to the number of trucks on the overhead lines. A drop in line voltage
will affect truck speed.
Voltage is directly related to truck speed (voltage = speed).
The Mine’s operations can lower line voltage which would cause the truck to travel at slower speed.
This may be done due to haul road conditions such as:
.
Slippery roads due to snow and ice;
.
Muddy roads due to rains, ect.
.
Road construction, ect.