Rockwell Automation Publication 450L-UM001D-EN-P - December 2019 115
Status Indicators and Troubleshooting Chapter 7
Status Indicator for Normal Operation
Tabl e 52 lists normal operation status indicators on a 450L-B and 450L-E safety
light curtain (colors and functions) for normal operation.
Table 52 - Status Indicators
No. Marking Status Indicator Name Color Behavior Description
System
Status
1STS Status indicator
Green On Power on and system is OK No
Green Red Blinking
Configuration that is changed or receiver was operated previously
with another transmitter
No
Green Off Blinking
See Troubleshoot on page 116
No
Off Red Blinking No
Red On No
2 Transmitter Green
On Plug-in identifies stick as a transmitter No
Blinking 1 Hz (50:50) See Troubleshoot on page 116
No
Blinking 1 Hz (98:2) Reduced range and/or beam coding is activated No
Off Stick is receiver No
3Receiver
Green
On Plug-in identifies stick as a receiver No
Blinking 1 Hz (98:2) Reduced range and/or beam coding is activated No
Off Stick is transmitter No
4OUT Safety outputs
Green On Safety outputs are on (receiver) No
Red On Safety outputs are off (receiver) No
—Off Transmitter No
5 Regional light intensity level 1
Green
On Bottom half zone is not interrupted and intensity is OK Yes
Blinking 1 Hz (50:50) Bottom half zone intensity is at the limit Yes
— Off Bottom half zone interrupted Yes
6 Regional light intensity level 2
Green
On Top half zone is not interrupted and intensity is OK Yes
Blinking 1 Hz (50:50) Top half zone intensity is at the limit Yes
— Off Top half zone interrupted Yes
7RES Start
Amber On Start required (receiver) No
— Off No start is required (receiver) No
8MUT Muting
Orange
Off Light curtain that is not muted No
On Light curtain that is muted No
Orange Off Blinking Muting error No
9 BLK Blanking
Orange Off No blanking feature selected No
Orange On Blanking feature that is selected No
Orange Off Blinking Blanking error No
10 CAS Cascading
Red
Off
No cascading plug-in that is inserted or Tx OSSDs of connected
cascade are in ON-state (Rx only)
No
On OSSDs of connected cascade are in OFF-state (Rx only) No
Red Off Blinking Error cascading plug-in No
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