Danfoss VLT FC 280 Operating Manual page 68

VLT® Midi Drive FC 280
Operating Guide
• Bit 0.1=0, safe stop 1 (zero-active).
• Bit 0.1=1, No safe stop 1.
Byte 0 Bit 7, INTERNAL_EVENT_ACK
• When this bit value changes from 1 to 0 (1→0 edge), an acknowledgement is given 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
bus.com.
6.5.2.5.2 PROFIsafe Status Word
Table 36: PROFIsafe Status Word (S_ZSW1)
Byte
Byte 0
Byte 0
Byte 0
Byte 0
Byte 1
If STO is triggered by safe DI or by SS1 timer expired, this bit also indicates "active".
1
If SS1 is triggered by safe DI, this bit also indicates "active".
2
Bits that are not supported are set to 0.
3
Byte 0 Bit 0, STO
• Bit 0.0=0, Safe Torque Off inactive.
• Bit 0.0=1, Safe Torque Off active (one-active).
Byte 0 Bit 1, SS1
• Bit 0.1=0, safe stop 1 inactive.
• Bit 0.1=1, safe stop 1 active (one-active).
Byte 0 Bit 7, INTERNAL_EVENT
• Bit 0.7=0, no safety fault.
• Bit 0.7=1, safety fault present.
68 | Danfoss A/S © 2022.02
Bit Name
0 POWER_REMOVED
1 SS1_ACTIVE
2–6 Not supported
7 INTERNAL_EVENT
0–7 Not supported
(1)
(2)
(3)
(3)
Safety Functions
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AQ381425076031en-000101 / 130R1223