Rockwell Automation 2706-P92C_P94C InView Message Display - Manual (Page 14)

14 InView Marquee Message Display
Publication 2706-IN016D-EN-P - February 2009
attached to the internal mounting plate. See publication 2706-IN015 for more
information on how to install the board kit.
Compact Flash Card
This product uses a Type I Compact Flash Card for message file storage.
2706-P9x Temperature Protection
InView P92C and P94C signs have automatic temperature controls that help to
protect the sign from damage when the internal temperature of the sign is too hot
to continue normal operation.
•
If the internal temperature of the sign reaches a pre-determined “dimming
point”, the LED output from the sign is forced into a 50 percent reduced
power mode, effectively dimming the brightness of LED output by about 50
percent.
•
If the internal temperature of the sign continues to increase, another sensing
circuit will execute an automatic shut down to protect the sign from damage.
The LED output from the sign is turned off. Two LED pixels will flash in the
lower right corner, indicating an auto-shutdown has occurred.
•
The dimming and shutdown points are listed in the table below. Once the
temperature drops below the auto-shutdown threshold, the LED output is
turned on at the dimming level. Once the temperature drops below the
dimming threshold, auto-dimming is disabled and the LED brightness is back
to 100 percent.
Model Dimming Point Auto-shutdown On
2706-P92C 55 °C (131 °F) 75 °C (167 °F)
2706-P94C 55 °C (131 °F) 75 °C (167 °F)
PEM Spacers