EKO INSTRUMENTS CO., LTD. 4-20mA Signal Converter MC-11 Instruction Manual V1
Pg. 14
7. Troubleshooting
7-1. Troubleshooting
Check the following items in case of trouble with the Solar Sensor Converter combination. If any questions
should remain, contact EKO for further technical support.
Table 7-1. Troubleshooting 4-20mA Converter
Failure
Action
There is no output from the signal
converter.
Check the output cable connection, and make sure there are no
disconnections. Check to make sure that DC12~24V of power supply
voltage is supplied.
Output value from the signal
converter is not appropriate.
Check the input cable connection, and make sure there are no
disconnections.
The convert output is more than
20mA.
Make sure the input signal voltage is less than 1600W/m
2
, which is
calculated with the solar sensor sensitivity.
The converter output is less than
4mA.
Check whether the + and – wirings are connected in reverse polarity.
NOTE: During nighttime conditions a negative voltage can be detected
known as the sensor zero-offset A effect (Only thermopile pyranometers).
Signal converter output is
unstable.
Check for any loose wire/cable connections.
Table 7-2. Troubleshooting 4-20mA USB Controller
Failure
Action
No connection possible
Check the connection. The 4-20mA converter can only be found during a
short period after connection. Re-insert the USB controller, or reconnect the
Jack plug, or reconnect the red clamp.
No change to made to converter
settings
Settings will only be active after writing the new settings. When changes are
made to the settings menu the status field will indicate (Synchronized or Not
Synchronized)
Read function doesn’t display any
measured data
Check the connection
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