CTI Products MCN RCD System Overview - Manual (Page 35)

MCN System Manual Module Operation
CTI Products, Inc.
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8. Module Operation
The following sections describe features and functions common to all MCN
modules.
8.1 Module LEDs
All MCN modules have three indicator LEDs on the front panel. These LEDs
give the following indications:
PWR ON when the module has DC input voltage within specification.
This LED will blink if the input voltage falls below the minimum
specified input voltage level. The module may still function in this
condition (depending upon how low the DC input voltage is),
however this is not recommended.
ERR ON to indicate module errors. Refer to the module’s hardware
reference manual for a description of these error conditions.
ACT ON or blinking to indicate that the module is successfully
communicating with other modules over the network.
During normal system operation, the PWR LED should be on, the ACT LED
should be ON or blinking, and the ERR LED should be OFF. If the LEDs do not
match this after the system is installed, refer to section 11 for troubleshooting
hints.
8.2 Module Buttons
All modules are equipped with a RESET button. Pressing this button will force
the module to initialize itself by reading its configuration switches and to begin
communicating with other modules.
Some modules are equipped with a SVC button. This button is reserved and
should not be pressed during normal operation.