MODULAR SAFETY INTEGRATED CONTROLLER MOSAIC
8540780 • 25/01/2023 • Rev.43 99
Channel configured as Redundant (Pair of sensors connected), conditions:
1. Sensor supply overload. Input channel overload. Read value over threshold. Read value under threshold. Disconnected sensor:
When one of these diagnosis is detected the RED led relative to the channel with the problem will flash. The RED led of the other channel remains ON
(no flash). If one of the above diagnosis is detected at the same time on both sensors the RED led of the second channel will flash while the RED led of the
first channel remains ON (no flash).
2. Read value from sensor pair out of tolerance diagnosis: both LEDs of channel pair will flash.
Shows the
physical
address of the
unit
• Check sensor connections
• Check sensor status
• Check sensor connections
• Check sensor status
Read value over
threshold
3 fast flashes
and a pause
of 600 ms
• Check sensor connections
• Check sensor status
• Check threshold values set with MSD software
Read value under
threshold
3 fast flashes
and a pause
of 600 ms
• Check sensor connections
• Check sensor status
• Check threshold values set with MSD software
3 fast flashes
and a pause
of 600 ms
• Check sensor connections
• Check sensor status
Read value from
sensor pair out of
tolerance
• Check sensor connections
• Check sensor status
• Check values set with MSD software
Table 81 - Troubleshooting MA4