technical reference
74
SYNRAD OEM v40 Operator’s Manual Version 4
User I/O connections
Figure below illustrates a method for controlling a higher voltage, higher current load by using a 24 V
control relay. Ensure that the relay coil’s pull-in current does not exceed 50 mA. A diode or surge sup-
pressor must be installed across the relay coil to prevent voltage spikes from damaging Firestar outputs.
(5)
+24 VDC AUXILIARY
POWER
(6)
LASER ACTIVE
(12)
AUX.DC POWER
GROUND
(13)
OUTPUT COMMON
+V
L
USER I/O PINS
Figure 4-15
Firestar output driving relay
Figure below illustrates how Firestar’s outputs can drive the DC Input Module of a Programmable Logic
Controller (PLC). By supplying voltage (+VDC) to Pin 13, Output Common, each Firestar output is inde-
pendently switched to activate individual PLC inputs.
USER I/O PINS
PLC
DC
INPUT
MODULE
(13)
OUTPUT COMMON
(6)
LASER ACTIVE
(7)
OVER TEMPERATURE
(8)
LASER READY
(14)
SHUTTER OPEN
(15)
INTERLOCK OPEN
V+
(+5–24V)
Figure 4-16
Firestar output driving PLC input module
