Transistor Signals; Input Signal Specifications, Ext. I/O Connector (1); Remote Interlock Connector - Unitek Miyachi LW250 Operation, Maintenance And Service Manual

Input Signals (continued)
Figure 3-2. Input Contact Signals on Connector EXT. I/O (2)
Transistor signals. The transistor signals are as illustrated in Figure 3-3 and 3-4.
NOTE: Disconnect COM of the EXT-I/O from COM pin 2 of the

remote interlock connector.

Input Signal Specifications, EXT. I/O Connector (1). Refer to Figures 3-1 and
3-3. The input signal specifications are as follows:

Pin No. 15, +24V output: Pin to be used only for LW250's internal circuit
connected to Pin 16. When a contact signal is input, short this pin to Pin 16. (Do
not connect any pin other than Pin 16.)

Pin No. 16, +12V--+30V input: When inputting by contact signals, short pin No.
16 to pin No. 15. If a transistor input is applied and power supply of +12V to
+30V is available at the input device side, connect the positive (+) line of that
power supply to this pin. Connect the 0V to pin No. 17 or 45.

Pin No. 17 and pin No. 45, 0V (COM): Used as the common input signal line.
When a transistor input is applied and the power supply of an external input
device is used, connect the OV line to this terminal.

Pin No. 28, Laser guide beam: Used to output the guide beam while the COM-
Guide Beam circuit is closed.

Pin No. 29, Trouble reset: When trouble occurs, correct it then input this signal
to reset to the normal state.

Pin No. 30, Control changeover (External): External input signals are effective
only while the COM-EXT ON circuit is closed.
990-605 REV B: May, 1997
LW250 PULSED Nd: YAG LASER
CHAPTER 3: I/O SIGNAL INTERFACE
L25INSW2.WPG
3-3