14
SICK LSI Technical Description - 06/98
Connecting LSI to power supply:
•
Connect the LSI supply via a suitably rated fuse to the power
supply, e.g. a 24 V DC power supply unit (transformer,
regulated with safe isolation to EN 60742, see technical data
in appendix).
Use 3-pin socket connector strips.
Connecting restart buttons as required:
•
Connect the restart buttons (normally open) to inputs
RES A and RES B.
Use 4-pin socket connector strips.
Notes:
Outside the switch cabinet Restart A and Restart B must be
routed in separate cables.
When fitting the restart button, note that the button must be
mounted such that, when the button is pressed, the hazardous
area is fully visible.
Connecting a contactor monitor as required:
•
Connect the break contacts of the contactors to inputs
EDM A and EDM B, as shown in the diagram (K1 to K4
are contacts of the elements directly controlling hazardous
movement).
Use 4-pin socket connector strips.
Note:
Contactor monitoring is activated 200 ms after a switchover.
In the static state the outputs are tested cyclically every
5 seconds.
optic
electronic
+
+
_
_
+
_
+
_
+
_
_
24 V DC
POWER OUT
POWER OUT
LSI
POWER IN
Power
supply
Sensors
Si
Connecting LSI to power supply
Connecting restart buttons
INPUT
A2
A1
B1
B2
RES A
EDM A
EDM B
RES B
WZ B
OSSD B1
OSSD B2
INPUT
C2
C1
D1
D2
A
B
B
24 V DC
INPUT
A
A2
A1
B1
B2
WZ A
ERROR
OSSD A1
OSSD A2
RES A
EDM A
EDM B
RES B
WZ B
OSSD B1
OSSD B2
A
B
B
24 V DC
K1
K2
K1 K2
K3
K4
K3 K4
Connecting a contactor monitor