6 Configuring the Safety Option
6.1 PROFIsafe Configuration
6.1.1 Telegram Configuration
In
parameter 42-60 Telegram Selection
, select the safe fieldbus type and telegram standard that the safety option uses for
communicating with the fail-safe PLC. VLT® Safety Option MCB 152 supports PROFIsafe standard telegram 30. If the parameter is set to
[0] None
, the safe fieldbus is disabled. In a PLC program, address the safety functions using bits and not bytes.
Byte 0 is PROFIdrive on PROFIsafe-specific and byte 1 is vendor-specific.
PROFIsafe control word (CTW)
Table 5: PROFIsafe Control Word (CTW)
Byte
Bit
(1)
Name
0
0
STO
0
1–6
Not supported
0
7
INTERNAL_EVENT_ACK
1
0–7
Not supported
1
Bits that are not supported are set to 0.
Bit 0, STO
Bit 00 = 0, Safe Torque Off (zero-active).
Bit 00 = 1, No Safe Torque Off.
Bit 7, INTERNAL_EVENT_ACK
When this bit changes its value from 1 to 0, the safety option gives an acknowledgment to the safety fault buffer. Fault entries in the
safety fault buffer are shifted to the last acknowledged fault situation. Faults, which are still present or not acknowledgeable, appear
again in the actual fault situation. For more information, refer to the PROFIdrive profile description at
.
PROFIsafe status word (STW)
Table 6: PROFIsafe Status Word (STW)
Byte
Bit
(1)
Name
0
0
POWER_REMOVED
0
1–6
Not supported
0
7
INTERNAL_EVENT
1
0
Status DI 1
1
1
Status DI 2
1
2–7
Not supported
Configuring the Safety Option
Installation Guide | VLT®Safety Option MCB 152
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Danfoss A/S © 2020.02
Summary of Contents for MCB 152
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