Pilz Cable PMCprimoDrive>Mod-Profibus:L=0,45m - Manual (Page 38)

Wiring
7-12 Operating Manual: PMCtendo AC
Connecting the holding brake
The holding brake can be controlled directly by the servo amplifier. In this case, the
braking action is suppressed within the servo amplifier. No additional wiring is required
within the braking circuit. Servo amplifiers from Pilz are fitted with a brake control as
standard.
If the holding brake is not controlled by the servo amplifier, the brake circuit must be
fitted with a suppression device through additional wiring (e.g. varistor).
Fig. 7-16: Suppression device within the holding brake circuit (principle)
M
Suppression device
(e.g. varistor)
Power supply
+24 VDC
0 VDC
+24 VDC
0 VDC
Servoregler
M
External safety-related control
of N/O contact
Power supply
+24 VDC
0 VDC
+24 VDC
0 VDC
Fig. 7-17: Safety-related control of the holding brake circuit (principle)
If the operation of the holding brake is to include personal safety, an extra N/O contact is
required for the holding brake within the brake circuit, as well as the additional
suppression device (e.g. varistor). Control of this N/O contact must be safety-related.
INFORMATION
The holding brake is operated with DC voltage (24 VDC). When you connect it, make
sure that the polarity is correct.