Electro Cam Plus PS-6144 Series, Руководство по программированию и установке

Страница: 101 / 116

7-1 Troubleshooting
Controller Diagnostics
The controller cannot be repaired in the field. If a unit fails, do not disassemble
it. Return it to the factory for replacement.
Status LED The yellow Status LED on the controller, Figures 5 & 6, blinks in various patterns to
indicate the controller status.
Normal Operation
The Status LED blinks on and off rapidly.
Keypad Not Connected
If the controller is powered without a keypad connected, the LED blinking pattern will
be “off” for one second, followed by four quick “on” blinks.
Internal Errors
If the LED blinking pattern is “on” for a second, followed by one or more quick blinks
“off,” the controller is experiencing internal errors. The specific error is indicated by the
number of “off” blinks:
One “Off” Blink—Corrupt RAM
Two “Off” Blinks—Checksum error indicating EPROM corruption.
Three “Off” Blinks—System error.
Four “Off” Blinks—System error.
If any of the above four patterns occur, power cycle the control. If the pattern occurs
again, remove the controller from service and return it to the factory.
Five “Off” Blinks—Internal error; possibly noise problems.
Six “Off” Blinks—Internal error; possibly noise problems.
If either of these two patterns occur, check for loose connections and fix any obvious
noise problems. If the problem persists, remove the controller from service and return
it to the factory.
CAUTION