Control elements
© Siemens AG 2003 All Rights Reserved
SIMOTION Safety Unit (AP) - Edition 06.2003
4-33
4.4.1
Determining the safety distance with ESPE
The reaction times of the ESPE, the control unit and the machine must be
considered when determining the safety distance. The reaction time and the
resulting safety distance can be calculated using the following equation:
S = (T1 + T2 + T3) * vg + k
S: Safety
distance
T1: Reaction time of the ESPE
T2: Reaction time of control unit
T3: Reaction time of machine
vg: Activation time (1.6 m/s or 2.0 m/s according to EN 999)
k : Addition for resolving power of the ESPE
k = 8 * (p-14); p: Resolving power of the ESPE
Example:
T1 according to manufacturer data sheet
T2 according to Safety Unit data sheet
connection of lag meter for determining
the reaction time of the machine (empirical
T3 measurement)
use the poorest of 10
measurement
values!
Control unit
Machine
ESPE
Содержание Simotion TM 121C
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