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To start the
thermic
engine, the selector 1 on the control panel (SC-EL DIS-EM
attachment 3) must be positioned on the thermic engine as in the scheme (3 open; 4
closed). When the stop button is not powered, and you push the Start button, you
power the cable 2 and then, through the selector, the cable 4 (Attachment 5). The cable
4 energizes the relay KA5 that closes the circuit conn12 to the thermic engine
for the machine starting. (Attachment 3 and Attachment 2) The cable 2 is also
connected with the entrance I6 of the PLC that, through the exit Q5 n°2, controls the
machine’s stop.
4.2.2 Starting the
thermic
engine from the basket
(Attachment 3): the main line F1 goes into the control panel on the base, on which
there are an emergency stop red button and a start button, that are in series. Between
these two cables starts the cable 15-16 that goes into the control panel in the basket
and gets connected with the stop button. From the Stop button starts the cable 1, that
goes into I5 of the PLC bringing the information that both the emergency stops are not
powered. Moreover, the main line 11 is fed.
In order to start the
thermic
engine, the selector 1 on the control panel (SC-EL DIS-
EM in attachment 3) must be positioned on the thermic engine as in the scheme (3
open; 4 closed). When the stop button is not powered and you push the Start button,
you power the cable 2; then, through the selector, the cable 4. (Attachment 5) The
cable 4 energizes the relay KA5, that closes the circuit conn12 with the
thermic engine, in order to start the machine. (Attachment 3 and Attachment 2) The
cable 2 is also connected with the entrance
I6 of the PLC that, through the exit Q5 n°
2, controls the machine stop.
4.3 Starting the electric engine
The procedure to start the electric engine is similar to what we have described in 4.2, concerning the
thermic engine: it can be made either from the undercarriage or from the basket. By the way, in this
case the selector 1 on the control panel (SC-EL DIS-EM in the attachment 3) must be positioned on
the electric engine. In this way, the cable 3 is fed by the cable 1 that goes into I7 of the PLC. The
PLC disconnects the thermic engine and starts to close Q5
to the earth
and, through the contact Q7,
sends the 230V feeding to the KM1 power relay.
Summary of Contents for GOLD LIFT 1470
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