Specifications

HYDRAULIC SCR CONTROL ( EV100P ) - This hydraulic controller consist of the following

features:

Three speeds adjustable from 0 volts to full motor volts.

Fixed speeds actuated by switch closure to negative.

1A bypass contactor ( if required )

Variable resistor input (5K-0 ohms).

PMT functions available with use of line contactor.

Current limit and controlled acceleration adjustable.

Battery Discharge Indicator interrupt compatible.

On-board TMM1A functions

Operation of voltage regulator card:

This card provides the basic functions required for controlling the EV100 hydraulic control and

optional contactors and PMT functions. Battery positive is applied through a main control fuse to the

key switch, energizing the control card power supply input to TB4.

When the line contactor is used, PMT operation is the same as outlined for the EV100 traction

controllers.

The four speed ( motor volts ) reference points TB2, TB3, TB5, and TB6 are selected by connecting

these points independently to battery negative.

The first speed is obtained by closing speed point 1, TB2, to SCR control negative. Speed point 1 is

adjustable by function 11 to adjust motor voltage from 0 to full motor volts. The specified motor

volts will be regulated, however, the magnitude of motor current will vary depending on the loading

of the vehicle.

The second speed is obtained by closing speed point 2, TB3, to SCR control negative. Speed point 2

is adjustable by function 12 to adjust motor voltage form 0 to full motor volts.

The third speed is obtained by closing speed point 3, TB5, to SCR control negative. Speed point 3 is

adjustable by function 13 to adjust motor voltage form 0 to full motor volts.

The fourth speed is obtained by closing speed point 4, TB6, to SCR control negative. Speed point 4 is

non-adjustable and provides full control motor volts. Speed input 4 must be activated to enable the

optional 1A contactor.

If more than one speed input is activated, the selected speed with the highest motor volts will over-

ride the low motor volt speed.

The 1A contactor is activated by closing the speed input switch connected to TB6 and SCR negative.

This starts the time delay circuit of the 1A contactor. This time is trimpot adjustable from 1 to 4

seconds. A clockwise rotation of the trimpot will increase the time delay.