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Accumulator Charging
Important: This is not a common function. The accumulator has been charged
from the factory and will not require charging unless someone has tempered with or
inadvertently actuated the accumulator hydraulic circuit ball valve. This story is only intended to
provide understanding of the accumulator circuit.
Note: This operation requires two people to be able to reach switches and valve at
the same time.
Turn knob SA1 to "0", and turn knob SA3 to "1", the relay KA4 and valve YA1, 2, 3 are
electrified. At the same time, loosen the stop valve of accumulator, then fill accumulator
according the value on the pressure gauge. Then shut off the stop valve as soon as the value is
present and turn SA3 to "0". Accumulator charge is complete.
System start light
Check if the emergency stop switches of the control panel and the foot pedal have been reset,
and that the light curtain for the safety-guarding on the back of the shear are closed.
Back Gauge:
The back gauge of this machine is controlled by the YSD6000s numerical control system. More
detailed operational information will be later in this manual.
The button SA4 is the power switch for YSD6000s system. The motor of back gauge is
controlled by variable frequency drive.
a) Starting and middle moment: The variable frequency drive supplies 50Hz frequency to the
motor, during this time the motor will operate at full-speed.
b) Ending moment: When the back gauge gets close to the target value, the frequency supplied
to the motor will decrease to 5-10Hz and the motor will operate at slow-speed. The slow speed
reduces inertia to near zero and improves the position precision of the back gauge.
Limit Switch on Frontal Safe Bar:
Limit switch SQ1 is installed on the frame under the front safe bar.
It is used to protect the operator's safety. Machine will not run when the limit switch is
deactivated. When the safety bar is reset, the machine will return to normal operation.
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Table of Contents
Troubleshooting
