Axis 670 Bedienerhandbuch PDF herunterladen (Seite 18)

J43-GND#2

(jroimd retum of bypass capacitors.

J4.4 - Error out

Must have a shorting jumper on W9 1&2 for class 1, W9

2&3

for class 0.

Class 0 Class 1

Error(t) = Vcom(t) - Vpos(t) Error(t) = (R105^C7/C16)^ {Vcom(t)/R30 - Vpos(t)/R29}

J4.5-GND#4

(jround retum of digital circuits.

J4.6 - 90% max power flag

This is an open collector switch that pulls down to -15v when within

10%

of a coil

temperature fault shutdown (IK ohm output impedance, lOma sink capability).

J4.7 - Fault out

This is an open collector switch that pulls down to -15v when the fault detector circuit

trips (IK ohm output impedance, lOma sink capability).

J4.8 - Remote Shutdown input

This input causes the servo to enter a fault mode when grounded.

3.11.2

Remote Shutdown Input

If it is desired to stop tiie scanner automatically, tiie "REMOTE SHUTDOWN" input on J4.8

allows the user to do so. This signal disables the output amp and trips the fault detector, when

grounded, which stops all scanning action within milliseconds. To shut down the servo, use an

open-collector fransistor switch capable of sinking at least Ima to ground J4.8. The fransistor

should have a minimum WCE breakdown rating of

20v.

Use J4.5 as the ground reference. The

LED status indicator will be orange during remote shutdown.

**Warning!! During shutdown the scanner's position may be anyv^ere within -120° optical.

If the board's "fault out" signal is not used to control the laser power or direction, the laser may

point in an inappropriate direction

^^^en

the scanners are shutdown.

When the Remote Shutdown signal is de-activated, the board cycles through a normal tum-on

sequence as described above.

3.12. LED Status Indicator

The LED status indicator will visually describe the three states ofthe servo system as followrs:

Green: system is in Normal operation mode.

Red: system is in Fault mode.

Orange: system is in Remote Shutdown mode.

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Axis 670 Bedienerhandbuch Seite 18