Danfoss VLT Safety Option MCB 150 - SS1 Ramp Time

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B
A Actual frequency
1 Activation of SS1 Ramp Slope
3 Parameter 42-44 Deceleration Rate
5 Parameter 42-46 Zero Speed
7 Activation of failure function
B SS1 ramp
2 Activation of STO
4 Parameter 42-45 Delta V
6 Safety function monitors
Illustration 10: SS1 Ramp Slope
When the Safe Stop 1 function is active, the drive brings the motor to 0 speed. The deceleration is monitored. If the monitored
deceleration is slower than expected or at 0 speed, STO is triggered.
This safety function corresponds to a controlled stop of the drive according to EN IEC 60204-1, stop category.
3.5.4.5 SS1 Ramp Time
Define a speed monitoring profile by a deceleration time and a tolerable speed (Delta V).
Table 5: Parameters for SS1 Ramp Time
Parameter Unit Range Default
Parameter 42-47 Ramp Time s 0.1–3600.0 s 1.0 s
Parameter 42-45 Delta V RPM 1–10000 RPM 120 RPM
Parameter 42-46 Zero Speed RPM 1–600 RPM 10 RPM
Functions and Systems Overview
Installation Guide | VLT® Safety Option MCB 150/151
AQ279747441421en-000101 / 130R0292
26 | Danfoss A/S © 2018.09