Synrad 32-1 - I;O Fault Diagrams

SYNRAD® 32-1 Operator’s Manual Version 2.2
46
User I/O Connections
Technical Reference
Pin# Function & Description
1 Fault Shutdown Output
Indicates failure of internal circuitry or existence of over temperature (> 60 °C ±2 °C),
over voltage, or under voltage fault. This active low signal (referenced to Pin 2 or Pin 4)
transitions from +15 V (normal operation) to 0 VDC when a fault occurs. Use this out-
put signal to disable external processes during a fault
1
. See the two following table(s)
for output signal specications.
2 Signal Ground
Signal ground/chassis ground for Pins 1, 8, and 9.
3 PWM (+)
4 PWM (-)
5 No Connection
6 Remote Keyswitch Input
Connect a remote relay or switch in series with the laser Keyswitch (If customer in-
stalled) to control laser On / O / Reset functions. Connect Pin 6 to Pin 7 to run; open
this connection to halt lasing or reset faults. As shipped, Pins 6 and 7 are connected by
the factory-installed jumper plug to enable the Remote Keyswitch function
2,3
. See the
two following table(s) for input signal specications.
7 Remote Keyswitch Output
Connect Pin 7 to Pin 6 to enable the Remote Keyswitch function (see Pin 6 description
above). Pin 7 is at DC line potential (+30 VDC) only when the Keyswitch is set to ON.
As shipped, Pins 6 and 7 are connected by the factory-installed jumper plug
3,4
. See the
two following table(s) for output signal specications.
8 Remote Lase LED Output
Connect an LED or LED-optoisolator between Pin 8 and Signal Ground for a remote
LASE indication
5,6
. See the two following table(s) for output signal specications.
9 Remote Ready LED Output
Connect an LED or LED-optoisolator between Pin 9 and Signal Ground for a remote
Ready (PWR) indication
5
. See the two following table(s) for output signal specications.
1 Pin 1 is an active low output. Specications: OFF: +15 VDC, 5 mA into 3 kOhm. ON: < 1 VDC, sinking 100 mA.
2 “Dry-circuit” (zero voltage) external switches are required since current into debounced remote keyswitch pins is negligible.
3 The remote keyswitch output pin is not current-limited or fused.
4 Pins 8 and 9 can be directly connected to the anodes of LEDs or LED-input optoisolators without external current limiting devices. Con-
nect LED cathodes to Pin 2. Current is limited internally to 20 mA at 3.3 V maximum.
5 The output of Pin 8, the Remote Lase LED Output, is a Pulse Width Modulated (PWM) signal based on the PWM input signal. It is not a
steady state (on/o) output.
Table 4-6 DB-9 pin assignments.
I/O Fault Diagrams