LNS QUICK LOAD SERVO III MI - Interface Connections and Signals

4-18 CHAPTER 4: ELECTRICS
QUICK LOAD SERVO III MI
3. INTERFACE
Before connecting, check to make sure that the voltage of the bar feed system
corresponds to the one provided by the lathe. The voltage of the bar feed system is
indicated on the identification plate. Only LNS (or certified) technician is authorized to
modify the interface or parameter system.
3.1. Description
The interface cable(s), between the bar feed system and the lathe is (are) provided by LNS.
Although an example of an interface diagram is provided, the diagram for the interface corresponding to
your device, essential when making the electrical connection, is located inside the electrical cabinet.
When making connections, ensure that the cables are long enough to allow the entire travel of the
retraction system (500 mm).
Should the interface instructions not be observed during the setting into operation, the
damaged elements as well as the resulting damages are not covered by warranty.
3.2. Connections
3.2.1. Power supply
Voltage: 3 x 220-480 V, 50 / 60 Hz + Ground (± 10%)
Maximum current: 1 A
In the case where the voltage supplied by the lathe does not match that provided for the barfeed, the
transformer T1 must be adapted.
The LNS bar feed systems are equipped with their own thermal protection systems (breakers, thermal
relays and fuses, etc.). The power supply for the bar feed system should be connected to the output of a
breaker mounted in the electrical control box of the lathe (10 A max.).
For the wiring inside the lathe, the section of the cables should be at least 1.5 mm
2
(AWG 16).
3.2.2. Signals from the lathe to the barfeed system
Always refer to the electrical diagrams shipped with the bar feed system and placed in the electrical
cabinet. Although an example of an interface diagram is provided, the diagram for the interface
corresponding to your device, essential when making the electrical connection, is located inside the
electrical cabinet.
a) 24 V dc power supply
Corresponds to the +24 V of the bar feed system. This power shall be used to connect the signals from
the lathe to the PLC.
• All signals from the lathe to the PLC shall be powered by the +24 V dc of the bar feed system.
• All signals from the bar feed system to the lathe shall be powered by the +24 V dc of the lathe.
For the other types of connections, please contact LNS S.A. or their local representative.
b) "EMERGENCY STOP" signal of lathe XT8-XT9
This signal is part of a safety link (Emergency Stop circuit) of the bar feed system. XT8-XT9 corresponds
to the Emergency Stop signal of the lathe. If the circuit is open, the bar feed system will go into an
Emergency Stop mode.
When the lathe is in an Emergency Stop mode, or if the safety line of the bar feed system is interrupted,
an alarm will go off and the R1 relay of the bar feed system will be triggered (see description of the R1
relay, below).