Electrical Connection - Parker LX Mise En Service Et Utilisation

2.5 Electrical connection

Before making any connections, make sure power to the electrical cabinet is off. This connection must comply with
the servoamplifier installation manual, and the cables selected from the range we offer (or equivalent characteristics).
Choose cables with a cross-section large enough to prevent voltage drops.
If the cable is more than 25 m long, a filter may be required at the servoamplifier output : ask us for details.
2.5.1 Thermal protection
Breaking capacity
Continuous current :
Peak current :
max Voltage:
In some cases, machine stopping may be postponed by up to a maximum of one minute to allow for completion of
the work cycle.
The cables we supply have shielded heat protection connector leads : where a non-shielded cable is used a signal
relay is required, to cancel interferences.
2.5.2 Holding brake energize to release
+
220
220µF ½ W
63V
0.1µF
24V =
63V
-
Warning : Observe the polarity and tolerance under tension and use a shielded cable.
A capacitor of 220 µF prevents the brake disengaging if the 24 V voltage is disrupted by external relaying. Check
the voltage value after fitting their capacitor.
To reduce brake response time, fit the contactor into the dc circuit.
Wire with regard to brake polarisation.
6A
12A
250V~
+
-
Thermal protection trips (contact
temperatures above 155° ± 5°C.
Resetting occurs between 98°C and 146°C.
The servomotor casing is 30°C lower than the
winding temperature.
The thermal protection contact is wired into the
emergency stop circuitry.
In a servomotor with brake, check that it works
before running the motor.
The standard brake has a 24 V ± 10 % DC
supply. Servomotor brakes should not be used
to stop the motor but to immobilize it in rotation
when it is stationary.
The holding brake is used for many repetitive
dynamic brakings but the dynamic braking is only
reserved for emergency stop.
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