Novanta SYNRAD Pulstar p100, Руководство пользователя

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INPUT/OUTPUT SIGNALS PAGE | 47
Figure 3-10 Auxiliary DC power diagram.
Table 3-7 User I/O pin descriptions continued.
Pin Function Description
Pin 4
+ 5 VDC Auxiliary Power
This connection pr5 VDC for driving external inputs or
outputs. The +5 VDC Auxiliary Power output can source up to 0.5 A
and is protected by a 0.5 A self-resetting fuse. The return (ground)
path must be through Pin 12, Auxiliary DC Power Ground.
Pin 5
+ 24 VDC Auxiliary Power
This connection pr24 VDC for driving external inputs or
outputs. The +24 VDC Auxiliary Power output can source up to 0.5
A and is protected by a 0.5 A self-resetting fuse. The return
(ground) path must be through Pin 12, Auxiliary DC Power Ground.
Pin 12
Auxiliary DC Power Ground
This connection provides a ground (earth) connection for +5 and
+24 VDC auxiliary power outputs. This pin is the only User I/O pin
that is connected to the laser’s chassis ground. Do not use this pin
for grounding if I/O circuits are powered from an external
customer-supplied DC power source.
Input signals
A total of four user inputs allows control of lasers. Remote Interlock, Shutter Open Request, and Remote
Reset/Start Request inputs are opto-isolated and bi-directional, allowing for positive or negative polarity
signal inputs. These three signals also share a common return connection, Input Common, which is
separate from chassis ground to completely isolate control signals for optimal connection, Input
Common, which is separate from chassis ground to completely isolate control signals for optimal EMI
performance. The fourth input, PWM Input, is opto-isolated and has a separate return, PWM Return, to
fully isolate PWM signals from the other three user inputs. Note that throughout this manual, input
voltage levels are specified with respect to their corresponding return line.
Pin 1 PWM Return
• Connect the return side of your PWM Command signal to this pin. Refer to Table 5-4 for input
circuit specifications.
Pin 2 Remote Reset/Start Request
•
Apply a positive or negative voltage (±5–24 VDC) with respect to Pin 11, Input Common, to
disable the laser. The laser remains disabled while voltage is applied to this pin. Removing voltage
from the Remote Reset/Start Request pin causes the laser’s RDY lamp to illuminate and begins a
five-second countdown after which lasing is enabled. Because all DC power is removed from the