Troubleshooting - Leviton A8911 Manual De Instalación Y Funcionamiento

6 TROUBLESHOOTING

Pulse count not incrementing:
Check the input LED for the specific input that is not working. The LED should blink when the pulse meter
closes the contact output. If it is not blinking, try bridging the input terminals with a short piece of wire to
confirm the LED comes on.
Try bridging the terminals at the other end of the pulse wiring run. This will confirm there are no breaks in
the wire.
Verify the pulse output device is operating.
Disconnect the A8911-23 input and use a hand held digital meter and measure resistance of the pulse
output device. Verify that the pulse output device is operational and the contact closure reads less than
1000 ohms when closed. For high resistance pulse devices such as intrinsic barriers, the "contact closure
threshold" register may need to be configured to a larger value. The default is 1k however up to 2.5k is
allowed. If using the AcquiSuite data acquisition server, use the advanced configuration page of the
A8911-23 in the Modbus/device list to set this option.
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