Siemens CU240B-2 Installation Manual

Accessories
8.9 Braking relay
Power Module PM240-2
Hardware Installation Manual, 01/2020, A5E33294624B AL
141
8.9 Braking relay
The converter uses the Brake Relay to control the motor holding brake. Two types of Brake
Relay exist:
● The Brake Relay controls the motor holding brake
● The Safe Brake Relay controls a 24 V motor holding brake and monitors the brake control
for short-circuit or cable breakage.
Note
Brake Relay and Safe Brake Relay
There are no differences between the Brake Re
lay and the Safe Brake Relay in terms of
installation and connection to the converter.
Connection to the converter
To ensure that you have the correct cable for connecting the Brake Relay irrespective of the
con
verter size, you are supplied with two preassembled cables with different lengths.
Connect the appropriate cable to the Brake Module and to the converter as shown below.
If you are using your own cable, ensure that the cable is insulated and rated for 600
V.
Connecting the motor holding brake via a PELV circuit
The Brake Relay must be connected to the protective conductor if the motor brake is
supplied from a PELV circuit.
Note
The Brake Relays are not limited r
egarding switching cycles.
8.9.1 Technical data of the brake relay
Brake Relay
6SL3252-0BB00-0AA0
Safe Brake Relay
6SL3252-0BB01-0AA0
Input voltage
via the Power Module
20.4 ... 28.8 VDC
1)
Input current
via the Power Module
Max. 2.5 A
Max. connection cross-section:
2.5 mm²
2.5 mm²
Degree of protection
IP20
IP20
Switching capability of the NO
contact
1-phase 440 VAC, 3.5 A
1-phase 30 VDC, 12 A
-
Output voltage
-
24 V
Output current
-
max. 2 A
1)
External, controlled power supply required. Recommended voltage: 26 VDC

Siemens CU240B-2 Specifications

General

Brand	Siemens
Model	CU240B-2
Category	Inverter
Language	English