ITEM C 3-Series User Manual

Electrical installation
Page 82
The DC bus circuits of several item Servo Positioning Controller C 3-Series can be interconnected via the terminals ZK+ and
ZK-. Coupling of DC bus circuits is interesting for applications with high braking energy levels or for applications requiring
movements to be performed even in the case of a power failure. Further information can be found in Application Note 67.
Terminals BR+ and BR- can be used to connect a holding brake of the motor. The holding brake is supplied with power via the
power supply of the servo positioning controller. Please note the maximum output current that is provided by the item Servo
Positioning Controller C 3-Series. It may be necessary to connect a relay between the device and the holding brake as shown
in
Figure 17 :
item C 3-Series
BR-
BR+
1
2
Power supply unit + 24 V Power supply unit GND
Resistor and capacitor
for spark suppression
Motor with
holding brake
Holding brake + 24 V
Holding brake GND
Flyback diode
Figure 17: Connecting a holding brake with a high current demand (> 2 A) to the device
Switching of inductive direct current via relays produces strong currents and sparking. For interference
suppression, we recommend using integrated RC suppressor elements, for example by Evox RIFA, product
name: PMR205AC6470M022 (RC element with 22 Ω in series with 0.47 µF).

ITEM C 3-Series Specifications

General

Brand	ITEM
Model	C 3-Series
Category	Controller
Language	English