User's Manual

Rockwell Automation Publication 440G-UM004C-EN-P - August 2020 27
Chapter 6
Device Status and Troubleshooting
Status Indicators during
Power-up Routine
When power is applied to the switch, the DEVICE status indicator is steady red
for 2.5 seconds, then the DEVICE and LINK status indicators flash red/green
for 1 second, and then the DEVICE status indicator is steady red for 3 seconds.
At the conclusion of the start-up sequence, the state of the status indicators is
determined by whether there is a demand on the safety function and the status
of the lock signal. See Table 11
.
Status Indicators During
Run Mode
Table 11 shows the status of the 440G-MZ safety switch during run mode.
Table 11 - Switch Status Indication During Run Mode
Indicator State Description
Device
Steady green
The switch is in the operational state with no demand on the safety
function (that is, closed and locked).
Flashing green @ 1 Hz
(1)
(1) This state occurs when connected to a GuardLink system only
The switch is in the operational state with no demand on the safety
function, but the link is in the safe state due to a demand on
another device in the link.
Flashing amber @ 1 Hz
The switch is ready to be locked, or attempting to lock. The lock
command is set to LOCK but the door is in the open position or
slightly ajar. Check that the door is closed.
Steady red
The switch is in the safe state due to a demand on the safety
function (that is, unlocked).
Flashing red @ 1 Hz The switch is in the fault state.
Link
(2)
(2) The Link status indicator is only used when the 440G-MZ safety switch is connected in a GuardLink system. It is OFF when the
440G-MZ safety switch is connected directly to an I/O device or safety relay (OSSD mode).
Off
Indicates no communication to the DG safety relay over the link.
The switch is wired directly to I/O and is not part of a GuardLink®
system.
Steady green
The link is in the operational state. This switch and all other devices
on the link are in the operational state.
Steady red
The link is in the safe state due to a demand or fault on this switch
or another device in the link.
Flashing red @ 1 Hz The link is faulted.