SOFT START CIRCUIT ENABLING/DISABLING
On the soft start circuit a switch (SW1) is available which makes it possible to cut off the circuit. Setting the
switch to ON the circuit is cut off. The circuit should not normally be cut off. Cutting off is allowed only for
fault finding and when considered absolutely necessary. Cutting off of the circuit may cause fuses F100 -
F101 - F102 to cut in upstream of SAU2 and/or the fuse of the DC bus inside SAU2 (DC bus +HV protec
-
tion). At all events after the maintenance operation the circuit must be reactivated setting the switch to OFF.
AXES ELECTRIC LIMIT SWITCHE ENABLING/DISABLING
To disable the negative or positive limit switch of an axis the dip switch of the corresponding axis must be set
to ON.
EG.: Disabling AXIS 1+/1-
ELECTRONIC RESET BUTTON
The electronic reset button is only used by the manufacturer during testing. This button must not be used by
persons carrying out maintenance or repairs on the SAU2 as abnormal conditions for correct system opera-
tion may result.
REPLACEMENTS
Specific cautions
· Carefully follow the GENERAL RULES FOR MAINTENANCE.
·
The assembly instructions are included with the components to be replaced.
·
Before doing any maintenance work on the SAU2 wait for the DC BUS condensers to discharge:
discharge time 6 minutes, after opening the main switch.
·
After any replacement operation, carefully check that all the connections are correct (ground, flat, cables ...).
·
All operations carried out on the bench must be performed with the supply subtended to protection
switch, earth connection . If necessary, reproduce the normal operating environment of SAU2:
Cooling fans on.
·
When replacing the DIGITAL CARD and/or SAU2 unit, after replacement it is necessary to issue the
CARS (Configure Arm, Reten_Mem, Save) command.
·
the SAU2 rack must be handled in compliance with the rules of safety in force considering that the total
weight is approx. 40 Kg @ 88.18 lb.
Special tools:---
C3G Plus MAINTENANCE
07/1200 7-59
1+ 1-
OAX bypassed
SERVO AMPLIFIERS UNIT SAU2
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