2 - Fagor Automation

i
Brake control
In some applications (e.g. the vertical Z axis on a milling machine) a electromechanical
holding brake is used on the rotor of the motor.
WARNING. This brake must never be used to brake moving axes. It must
only be used to hold or lock vertical axes that have been stopped previously
!
Hence, the brake holds the rotor when loses voltage at its terminals.
When the machine is out of service, the brake locks up the vertical Z axis
to keep it from falling due to gravity.
The reaction time of a brake integrated into an axis feeding FAGOR motor
may vary between 7 ms and 97 ms depending on the model.
MANDATORY. While the brake is locking the vertical axis motor, the motor
must be kept with torque. See parameter GP9 in chapter 13 of the
"dds-software" manual.
MANDATORY. When powering the machine up, the brake must never be
released until the system assumes control of that axis. See the TV100
variable in chapter 13 of the "dds-software" manual.
Remember that
The control circuits of compact drives as well as RPS, XPS and PS-25B4
power supplies are powered at 24 V DC by an internal auxiliary power
supply. PS-65A power supplies will need an external APS-24 auxiliary
power supply to power them because they do not have one integrated
into them.
In compact drives and power supplies, the auxiliary power supply must be
powered at single-phase 400-460 V AC. But not RPS power supplies;
they must be powered at three-phase 400-460 V AC.
Closing the main power switch - S1 must take two phases to connector
X1 when using compact drives or an APS-24 as auxiliary power supply of
the PS-65A and to connector X3 when using XPS or PS-25B4 power supplies.
In the case of RPS power supplies, there are three phases instead
of two and they must go to connector X1.
INFORMATION. It is necessary to install external protection fuses in the
power lines of the auxiliary power supply. They are internally integrated
into the main power supply.
Opening of contactor - KM1 does not remove the supply of power to the
auxiliary power supply in any case. But opening the main switch - S1
does and the 24 V DC are maintained until the stop takes place.
Connection diagrams
CONNECTION DIAGRAMS
Electrical cabinet. Diagrams 10.
DDS
HARDWARE
Ref.1209
335