Table of Contents
Advertisement
Locate the internal restart mode selector near the buzzer switch (see Figure 4-4).
Select start and restart interlock (manual) mode (H for Hold) or automatic restart mode (N for Normal) as required.
Select buzzer option as required.
Reinstall lid, tighten screws and snap the protective plastic covers back in place.
Figure 4-4 Mode selector and buzzer switch
H = Hold (Start and Restart Interlock (manual) mode)
N = Normal (Automatic Restart mode)
In the start and restart interlock (manual) mode, the connection between the restart input and an external 24 Vac/dc supply
must be set using a push-button to restart the equipment (minimum closing time is 200 ms). It takes 300 ms for the system
to restart after activation of the push button.
In this mode, the FF-LS safety light curtain will detect a restart push-button failure (broken in a closed position) and will
prevent the next cycle of operation until the failure has been corrected.
4.8.
Example electrical wiring connections
IMPROPER SYSTEM PERFORMANCE
Ensure independent stop circuit safety relays (K1 and K2) have mechanically linked contacts that prevent contact
overlapping in the event of a welded contact.
Failure to comply with these instructions could result in death or serious injury.
Figure 4-5 Start and restart interlock (manual) mode with final switching device (FSD, external safety relays) monitoring
Power supply
(+)
18-25 Vac
22-30 Vdc
FUSE
K1
K2
TEST
(-)
RC components for ac interfaces or varistors for dc interfaces.
31
(1)
K1
K2
Control Unit
+
X1
X2
X1
X1
X2
-
F1
F2
X2
(1)
Start P/B
FF-LS
H
+
N
Internal Restart
Hold
Mode Selector
Reset
-
Sensor A
Sensor B
FUSE
FUSE
K1
K2
Machine Control
Circuit
107022-16 EN FR26 GLO 301 Printed in Germany
Advertisement
Table of Contents
