The safety option:
•
Activates safety functions on request.
•
Sends status information to the safety control system via a connected PROFINET fieldbus.
•
Activates the safe state when the option detects faults.
The safety control system:
•
Activates safety functions via input on the safety option and/or via the safe fieldbus.
•
Evaluates signals from safety devices, such as:
-
E-STOP push buttons
-
Non-contact magnetic switch
-
Interlocking switch
-
Light curtain devices
The safety devices are connected to digital inputs of the safety option or digital input of the PLC.
•
Provides safe connection between the safety option and a safety control system.
•
Provides fault detection on the signal between a safety control system and the safety option at activation of safety functions (short
across contacts, short circuit).
MCA 120
PROFINET
MCB 152
Safety Option
μ C
IGBT
STO
37
M
Safe PLC
EM
ER ENCY
G
STOP
Control card
Internal bus 1
O
pt
io
n
A
O
pt
io
n
B
Internal bus 2
e3
0b
d9
77
.1
1
Illustration 1: FC 302 with VLT® Safety Option MCB 152 and Fieldbus Option
1.5.2 Unit Features
The safety option has the following features:
Introduction
Installation Guide | VLT®Safety Option MCB 152
AN327351953089en-000101 / 130R0578| 7
Danfoss A/S © 2020.02
Summary of Contents for MCB 152
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