Danfoss iC7 Series Operating Manual page 35

Operating Guide | iC7-Automation Functional Safety
Table 22: SS1 Parameters
(continued)
Parameter name
Delay to detect limited state
(1)
(D)
(1)
Deceleration limit (E)
(1)
Limit for the Speed (F)
SS1 Instance 2
Activation configuration (A)
Maximum time (B)
Delay before monitoring (C)
Delay to detect limited state
(1)
(D)
(1)
Deceleration limit (E)
(1)
Limit for the Speed (F)
1) Parameters C–F cannot be configured for SS1-t.
The SS1 delay function does not monitor the stopping of the drive. The time relevant for safety allows the drive to stop before
Safe Torque Off is activated, and ensures that the system is stopped before Safe Torque Off is activated.
If a fault occurs, the drive does not come to a stop. It coasts after the time delay regardless of the speed of the drive.
Using SS1 delay may result in the motor still spinning when Safe Torque Off is activated.
The risk analysis for the machine must indicate that this behavior can be tolerated.
l
An interlock may be required.
l
Danfoss A/S © 2024.08
Selections
1–60000 ms
1/500 Revolutions / (s*s)
2^-16 Revolutions / s
De-energized (Function always
on)
Safe Input (X31/X32)
Energized (Function always
off )
2–3600000 ms
(1)
1–60000 ms
1–60000 ms
1/500 Revolutions / (s*s)
2^-16 Revolutions / s
Functional Safety for Frequency Converters, Upgradable (+BEF2)
Default value
1 ms
0
1
Energized (Function always
off )
2 ms
1 ms
1 ms
0
1
NOTICE
Description
The time the speed has to be
within the limits before acti-
vating the final state (early ac-
tivation).
The limit for the deceleration.
a_SS1 = 0 means "No decelera-
tion monitoring".
The limit within the speed is
accepted as 0.
Specifies the safe digital input,
which can be associated to the
activation of the safety func-
tion.
The maximum time of the stop
procedure.
The time to ignore the decel-
eration after the activation of
SS1.
The time the speed has to be
within the limits before acti-
vating the final state (early ac-
tivation).
The limit for the deceleration.
a_SS1 = 0 means "No decelera-
tion monitoring".
The limit within the speed is
accepted as 0.
AQ319741840653en-000401 / 136R0268 | 35