SIEMENS
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Siemens D 31 N · March 2016
SINAMICS G120 standard inverters
0.37 kW to 250 kW (0.5 hp to 400 hp)
Supplementary system components
> Safe Brake Relay
5
■
Overview
With the Safe Brake Relay function, the brake is controlled in
accordance with IEC
61508 SIL
2 and EN
ISO
13849-1 PL
d and
Category 3.
■
Design
The Safe Brake Relay can be installed below the Power Module
on the shield connection plate.
The Safe Brake Relay has the following connections and
interfaces:
•
1 two-channel transistor output stage to control the motor
brake solenoid
•
1 connection for the cable harness (CTRL) to the Power
Module in blocksize format
•
1 connection for the 24 V DC power supply
The connection between the 24 V DC supply and the Safe Brake
Relay must be kept as short as possible.
The scope of delivery of a Safe Brake Relay includes the
following
:
•
2 cable harnesses for connecting to the CTRL socket of the
Power Module
- 0.32 m (1.05 ft) length for frame sizes FSA to FSC
- 0.55 m (1.8 ft) length for frame sizes FSD to FSF
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Selection and ordering data
■
Technical specifications
■
Integration
Connection example of Safe Brake Relay
The 24 V DC solenoid of the motor brake is directly connected to
the Safe Brake Relay. External overvoltage limiters are not required.
Description
Article No.
Safe Brake Relay
Including cable harness for connection to
Power Module
6SL3252-0BB01-0AA0
Safe Brake Relay
6SL3252-0BB01-0AA0
Switching capability of the NO contact
–
Power supply
20.4 ... 28.8 V DC
Recommended rated supply
voltage 26 V DC
(to compensate for voltage
drop in feeder cable to
24 V DC motor brake
solenoid)
Power requirement, max.
• Motor brake
2 A
• At 24 V DC
0.05 A + the current
requirement of motor brake
Conductor cross-section, max.
2.5 mm
2
Dimensions
• Width
69 mm (2.72 in)
• Height
63 mm (2.48 in)
• Depth
33 mm (1.30 in)
Weight, approx.
0.17 kg (0.37 lb)
U2
V2
W2
PE
M
3 ~
Safe Brake Relay
CTRL
M
+
M
+
M
+
BR-
BR+
G_D211_EN_00071a
ext.
24 V
PM-IF interface
Cable harness
Power Module
© Siemens AG 2016