![background image](http://html.mh-extra.com/html/omron/scc-1224/scc-1224_installation-and-operating-manual_1633415008.webp)
D E S C R I P T I O N O F C O N T R O L
Indicators
8
Safety Edge Controllers Manual 99640-0010 Rev.P
Original Instructions
4.4. I
NDICATORS
There are four LED lamps on the SCC-1224 and SCC-1224ND Safety
Edge Controller. Please see
Figure 5-2
for the physical location of each
indicator. These LEDs are identified on the controller.
• Green LED Power
Indicates that main power has been applied to the controller. Upon removal
of power, the green light will go out and the controller and Safety Edge
becomes inactive and the safety contacts are opened.
• Yellow LED Actuate (Edge Activated)
Indicates that the Safety Edge is depressed. LED goes out upon removal of
pressure from the Safety Edge.
• Red LED Fault Indication
Indicates an open circuit in the Safety Edge such as a broken/cut wire, a
loose connection on terminals X1 and/or X2 on the controller terminal
block, a missing or incorrect value of the terminating resistor at the end of
the Safety Edge, or any damage to the Safety Edge that could cause an
open circuit between terminals X1 and X2.
• Yellow LED Auxiliary Output SCC-1224 (Delay to Open)
Indicates that the safety contact has been activated, causing the auxiliary
contact to close. These contacts close when the safety contact is activated
and are timed to open after about one to three (1 to 3) seconds. This could
be used to reverse a door so long as doing so does not present a hazard.
• Yellow LED Auxiliary Output SCC-1224ND (No Delay to Open)
Indicates that the safety contact has been activated, causing the auxiliary
contact to close. These contacts remain closed as long as the safety Edge is
activated.