Pilz PMCtendo DD5 Operating Manual page 31

Function description
4.2.2 Motor connection
The servo amplifier controls the motor with a variable frequency 3-phase sequence. The
motor holding brake is also controlled.
}
The rated voltage U
U
N
U
ZK
} Thermal switches and motor feedback systems on the servo motor are evaluated.
}
In the commissioning software (PASmotion) it is possible to select from a database the
appropriate data record and parameters to suit the Pilz motor.
}
Motor cables are available ready-assembled from Pilz as an accessory.
The power element, motor cable and motor winding form an oscillating circuit. Variables
that determine the voltage generated within the system:
}
Cable capacitance
}
Cable length
} Motor inductance
}
Frequency
} Speed of the voltage rise
Please note the information provided in the technical details and the specification of the
motor you are using.
4.2.3 Motor holding brake
The servo amplifier can activate a motor holding brake (24 VDC, max. 1.5 A) directly. The
motor holding brake is supplied by the control element's supply voltage. Ensure that the
power supply is adequately sized (see "Technical details").
Operating Manual PMCtendo DD5
1002236-EN-04
of the motors must comply with the following value:
N
≥ U · 0.707
ZK
: Intermediate circuit voltage
DANGER!
Risk from non-safety-related activation of the motor holding brake!
Activation of a holding brake via output BR+/BR- of the servo amplifier is not
safety-related. Depending on the application, hazardous motor movements
may cause serious injury or death.
A motor holding brake activated by the servo amplifier alone is not suitable
for personal protection.
Block the drive through an additional mechanical holding brake, which is ac-
tivated safely.
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