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107022-16 EN FR26 GLO 301 Printed in Germany
IMPROPER ARC SUPPRESSORS INSTALLATION
Never install an arc suppressor across the safety output contact of the control unit.
Always install arc suppressors across the coils of external safety relays.
Failure to comply with these instructions could result in death or serious injury.
Internal safety relay contacts X1 and X2 are switched simultaneously. An internal permanent check ensures that both
safety relays have the same status. If one of the two contacts X1 or X2 becomes accidentally welded, the remaining contact
would no longer be able to close. It is therefore important to use the two signals to prevent operation of the machine.
In this case, use the contacts 1.1 / 1.2 and 2.1 / 2.2 separately:
Figure 4-2 Machine connection with double stopping circuitry
* RC component (see Figure 4-6 for correct interfacing of K1
and K2. The partial example shown here is more appropriate
for ac power).
Figure 4-3 Multiple safety light curtain connection
Four external safety relays K1, K2, K3 and K4 are used in the following manner:
* RC component (see Figure 4-6 for correct interfacing of
K1, K2, K3 and K4. The partial example shown here is
more appropriate for ac power).
Standard values for RC components:
Supply voltage
Resistor
Capacitor
115/230 Vac
220
Ω
0,22
µ
F
24/48 Vac
100
Ω
2,2
µ
F
Safety output contacts are protected by 4 A / 250 V fuses.
X1
X2
Fuse
Fuse
Fuse
2
1
Содержание FF-LS082802362
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