40 - FORM NO. 56043042 / Whirlamatic
™
2700 / BHS 7014
ELECTRICAL SYSTEM
revised 2/02
OUTPUT CONTROLS:
The pad up/down switch is used to control the output functions of the main control unit. Below is a detailed description of each switch
function.
Pad Down Switch
This switch is used to toggle the state of the pad motor. Pressing and releasing this switch will alternately turn the pad motor on and off.
The switch indicator provides the following status information:
Off - Pad output is off and there is no current flow through the contactor coil and no pad motor current sensed.
Green - Pad output is on and there is normal current flow through the contactor coil and normal pad motor current sensed.
Flashing yellow - Either the pad motor output is off, and there is current flow through the coil, or pad motor current is sensed (shorted
output driver, control error, shorted contactor, wiring error). Or the pad motor output is on, and there is no current flow through the coil,
or no pad motor current is sensed (open circuit, open relay coil, open contactor contacts, wiring error or open output driver).
Pad Up Switch
This switch is used to control the output to the pad lift actuator. Pressing and releasing this switch will cycle the actuator output through
4 states. These are:
1 - output off, direction = up
2 - output on, direction = down
3 - output off, direction = down
4 - output on, direction = up
When the output is in state 1, the actuator output is turned off. The pad actuator up indicator will be flashing and the switch indicator should
be off. If the switch indicator is flashing red, this indicates that the control is sensing current flow through the actuator (shorted output
driver, control error).
When the output is in state 2, the actuator output is turned on. The pad actuator down indicator will be flashing and the switch indicator
should be green or flashing green. The indicator will be a steady green if the control senses current flow through the actuator. It will flash
green if no actuator current flow is sensed (actuator at limit, open circuit, open output driver).
When the output is in state 3, the actuator output is turned off. The pad actuator down indicator will be flashing and the switch indicator
should be off. If the switch indicator is flashing red, this indicates that the control is sensing current flow through the actuator (shorted
output driver, control error).
When the output is in state 4, the actuator output is turned on. The pad actuator up indicator will be flashing and the switch indicator should
be green or flashing green. The indicator will be a steady green if the control senses current flow through the actuator. It will flash green
if no actuator current flow is sensed (actuator at limit, open circuit, open output driver).
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SERVICE TEST MODE (CONTINUED)
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SPECIAL CONTROL MODES FOR MACHINES AFTER SN 1507058
