Troubleshooting - Hach sc200 User Manual

Troubleshooting

Problem
No current output
Incorrect current output
No relay activation
Resolution
Verify current output configuration.
Test current output signal using the Test/
Maintenance submenu. Input a current value
and verify the output signal at the controller
connections.
Contact Hach Technical Support.
Verify current output configuration.
Test current output signal using the Test/
Maintenance submenu. Input a current value
and verify the output signal at the controller
connections. If the output is incorrect, perform
an output calibration.
Make sure relay connections are secure.
If using an external power source, make sure
the relay wiring is correct.
Make sure the relay configuration is correct.
Test the relay activation through the Test/
Maintenance menu. The relay should energize
and de-energize as selected.
Make sure the controller is not in calibration
mode and that the relay is not being held.
Reset the Overfeed Timer to make sure the
timer has not expired.
Problem Resolution
Make sure the SD card is properly oriented.
The copper traces should face toward the
controller display.
Make sure the SD card is fully seated in the slot
and the spring lock is engaged.
Make sure the SD card is properly formatted
Secure Digital Memory (SD) card
with a Fat 32 format. The MMC format is not
not recognized by the controller
supported. Follow the instructions of the card
manufacturer to format the SD card on a PC.
Make sure the card is not larger than 32 GB.
Make sure an SD card is being used. Other
types of cards (such as xSD, micro SD, mini
SD) will not work properly.
Make sure the SD card is properly formatted
with the FAT 32 format. The MMC format is not
supported. Follow the instructions of the card
manufacturer to format the SD card on a PC.
Information not saving, or not
If the SD card has previously been in use,
saving properly to the SD card.
format the card with the Fat 32 format, install
the card in the controller, and try downloading
files.
Try a different SD card.
Read the SD card with a PC or other card
SD card full reader device. Save important files and then
delete some or all of the files on the SD card.
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