SICK LSI 101, Техническое описание

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65 SICK LSI Technical Description - 06/98
Example 4: Driverless Transport System (DTS), forward only,
with incremental encoders
Determine the number of pulses your incremental encoders
deliver per centimetre covered by your vehicle, as in example 3,
and enter the values in the user software under ”Pulses per
centimetre”
(How to configure the incremental encoders in the PLS/LSI user
software is described in section 9.7).
The LSI system is configured as follows:
– One PLS sensor connected
– Four monitoring areas defined (the protective and warning
fields are shown in the diagram)
– One OSSD output and one warning field output configured
– Four monitoring cases configured (e.g. slow, fast, left, right)
– Two incremental encoders connected and configured
– The monitoring cases ”slow” and ”fast” are activated via the
incremental encoders: monitoring cases ”left” and ”right” via
the binary inputs
– Any order of monitoring cases
Note on the circuit diagram:
Use only relays with positively-driven contacts.
The protective elements switched in parallel with the contactors
are for arc suppression.
1) Output circuits. These contacts are to be incorporated into
the controller such that, when the output circuit is open, the
hazardous state is canceled.
In categories 3 and 4 to EN 954-1, they must be
incorporated on two channels (x, y paths).
PF1
PF2
PF3 PF4
WF2
WF1
WF3 WF4
Example 4: Driverless Transport System (DTS), forward only
K6 K1 K2
K2
K1
POWER IN
ERROR WZ A
- +
+24V DC
0 V
Si
OSSDB2
POWER OUT
-
OSSDA1 OSSDA2 WZ B OSSDB1
A B
- - + +
POWER OUT
EDM A
A
RES A EDM B RES B
A1
B
+ - + - 1
90¡
B1
+ - 0¡
1/f
B2
90¡
+ - 0¡
1/f
SPEED INPUT
(C)
INPUT
B2 A2 B1 C1 C2
SENSOR 1
INPUT
3 2 1 4
3 6 D1 1 D2
SENSOR 2
3 2 4
7 1 3 6 7
SPEED INPUT
(D)
COM
5 3 2
1
2
3
1
4
3
8
7
PLS
LSI
k1 k2
x y
x
1)
y