SEW-Eurodrive MOVIFIT MC, Руководство пользователя, Страница: 10 / 32

2
MOVIFIT
®
MC safety concept
Safety functions
Manual – Functional Safety
10
2.4.2 SS1(c) – Safe Stop 1
Adhere to the following procedure:
• Decelerate the drive using an appropriate brake ramp specified via setpoint inputs.
• Disconnect the STO input (= triggering the STO function) after a specified safety-
related time delay.
This safety function corresponds to a controlled stop according to EN 60204‑1, stop
category 1.
The following figure illustrates the SS1(c) function:
t
2
t
1
t
V
∆
t
9007201225618443
Drive safety function monitoring
Drive safety function trips
v = Speed
t = Time
t
1
= Point of time when SS1(c) is activated and the braking action is triggered
t
2
= Point of time when STO is triggered
Δt = Safety-related period of time
INFORMATION
• The SS1(c) function does not monitor the stopping of the drive.
• The safety-related period of time Δt allows the drive to come to a stop. In the
event of a fault, the drive does not come to a stop and becomes de-energized at
the time t
2
(STO).
29157056/EN – 09/2019