Siemens SINAMICS PM240-2 - Connecting a Motor Holding Brake; Technical Data of the Brake Relay

Accessories
9.6 Connecting a motor holding brake
Power Module PM240-2
122 Hardware Installation Manual, 01/2017, A5E33294624B AE
9.6
Connecting a motor holding brake
The inverter 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
The Brake Relay and the Sa
fe Brake Relay do not differ from each other in the installation
and the connection to the inverter.
Connection to the inverter
To ensure that you have the correct cable for connecting the Brake Relay irrespective of the
inverter size, you are supplied wit
h two preassembled cables with different lengths. Connect
the appropriate cable to the Brake Module and to the inverter 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.
9.6.1
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