technical reference
3
19
Synrad
Firestar i401
operator’s manual
User I/O connections
Sample I/O circuits
Sample inputs
Figure 3-10 illustrates one method of supplying a
Remote Interlock
signal using a customer-supplied limit
switch. Firestar’s
+24 VDC Auxiliary Power
output powers the circuit. Note that Pin 4,
+5 VDC Auxiliary
Power
, could have been used instead, depending on circuit voltage requirements.
(12) AUX. DC POWER
GROUND
Close switch to
enable interlock
USER I/O PINS
(5) +24 VDC AUXILIARY
POWER
(3) REMOTE INTERLOCK
(11) INPUT COMMON
Close switch to
enable interlock
USER I/O PINS
(3) REMOTE INTERLOCK
(11) INPUT COMMON
–12 VDC
0 VDC
Figure 3-10
Customer-supplied interlock
Figure 3-11 shows another variation for supplying a
Remote Interlock
signal to the laser. In this case, the
customer is using a limit switch and supplying a negative voltage to drive Firestar’s input circuit.
Figure 3-11
Customer-supplied interlock, negative voltage
