Product manual

Fault tracing guide
Product Manual 5
1.4 Robot computer DSQC 363
The robot computer, which controls the system’s I/O, axis control, serial communica-
tion and teach pendant communication, is the first unit to start after a cold or warm
start. The red LED on the front of the board goes off immediately when the system is
reset and goes on again if an error is detected in the tests. As mentioned above, the
robot computer releases the main computer when the preliminary diagnostics have
given the go ahead-signal.
The read and write memories of the robot computer are battery-backed.
If the system does not start at all, and the LED on the robot computer goes on, the error
is probably in the robot computer.
1.5 Panel unit DSQC 331
The DSQC 331 Panel unit controls and monitors the dual operation chain. Its status is
also indicated by LEDs at the upper part of the unit.
Over temperature of the motors is monitored by PTC inputs to the board.
LED indications for DSQC 331
The LEDs are very useful when trying to locate errors in the operation chain. Unlit
LEDs indicate the whereabouts of an error in the operation chain, making the error easy
to locate in the system circuit diagram.
Marking Colour Meaning
EN Green Indicates “go ahead” from the control system
MS
NS
ES 1 and 2
GS 1 and 2
AS 1 and 2
Green/red
Green/red
Yell ow
Yell ow
Yell ow
Module status, normally green, see also section 1.6
Network status, normally green, see also section 1.6
EMERGENCY STOP, chain 1 and 2 closed
GENERAL STOP switch, chain 1 and 2 closed
AUTO STOP switch, chain 1 and 2 closed