Danfoss VLT Safety Option MCB 150 Installation Manual page 65

Installation Guide | VLT® Safety Option MCB 150/151
Group Group Parameter
name
42-4* SS1 42-40 Type
42-41
Ramp Pro-
file
42-42 De-
lay Time
42-43 Delta
T
42-44 De-
celeration
Rate
42-45 Delta
V
42-46 Zero
Speed
42-47
Ramp Time
42-48 S-
ramp Ratio
at Decel.
Start
42-49 S-
ramp Ratio
at Decel.
End
Danfoss A/S © 2018.09
Value range/ Default
available op-
tions
[0] Delay [0] Delay
[1] Ramp
(slope)
[2] Ramp (time)
[0] Linear [0] Safe Op-
tion Linear
[2] S-ramp
Const Time
0.1–3600.0 s 1.0 s
0–99% 2%
1–30000 RPM/s 1500 RPM/s
1–10000 RPM 120 RPM
1–600 RPM 10 RPM
0.1–3600.0 s 1.0 s
1 to (100 - 50%
42-49 S-ramp
Ratio at Decel.
End)%
1 to (100 - 50%
42-48)%
Description
The type of the SS1 Safety Function.
The ramp profile for an SS1 Delay can
be either specified as linear or S-ramp.
Time until STO is activated
Δ T subtracts from the time in parame-
ter 42-42 Delay Time to get motor to
stop before the timer expires.
Deceleration rate for the SS1 slope-
based ramp type.
Tolerance between calculated and ac-
tual speed that the safety option al-
lows.
When this speed is reached, the safety
option activates the STO.
Time to ramp down to 0 RPM
The proportion of the total ramp-down
time (parameter 42-42 Delay Time)
where the deceleration torque increa-
ses. The larger the percentage value,
the greater the jerk compensation ach-
ieved, and thus the lower the torque
jerks in the application.
The proportion of the total ramp-down
time (parameter 42-42 Delay Time)
where the deceleration torque decrea-
ses. The larger the percentage value,
the greater the jerk compensation ach-
ieved, and thus the lower the torque
jerks in the application.
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General Parameter Set-up
Con- Data
ver- type
sion
index
– u_int8
– u_int8
-1 u_int16
0 u_int8
0 u_int16
67 u_int16
67 u_int16
-1 u_int16
0 u_int8
0 u_int8