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Klinger CMF
Instruction Manual
Page 66
measured value is less than the
low cutoff value.
Check the low cutoff level.
7.4.6 Frequency output problem
The typical causes of, and solutions to, this problem are laid out in table 8-7
Table 8-7 Frequency output problem
Problem description
Possible causes of
Troubleshooting
Solution
No frequency
output.
The process condition is
lower than the low cutoff
level.
Slug flow.
Opposite direction.
Frequency receiving
equipment fault.
The output voltage is not
compatible with the
receiving device.
Wiring problem.
Output circuit fault.
Configure low cutoff level.
Avoid slug flow.
Check flow direction.
Verify whether the receiving equipment is
faulty.
Verify the input voltage of the receiving
device.
Verify the whole wiring.
Call Walsn or local distributor.
Frequency output
error
Output voltage fault.
Error in the frequency
upper range value
configuration
Flow overflow.
Verify the input level of the receiving
device.
Check the upper range value of frequency
output configuration.
If the flow rate is 25% higher than the
full range, then the maximum frequency
outputs can up to 12.5 kHz.
Frequency output
instability.
(RFI)External radio
frequency interference.
Check if there is radio frequency
interference.
7.5 Inspection items and methods
7.5.1 Check the power supply
If the power cable is damaged or incorrect wiring, the flow meter will not work properly.
7.5.1.1 Before checking the power cable, disconnect the power supply.
In explosive zone, wait at least 5 minutes after power off while you remove the
transmitter’s covers.
7.5.1.2 Ensure the power supply used appropriate fuses. An incorrect fuse will limit the current to
the transmitter and can cause it to fail to initialize.
7.5.1.3 Make sure that the power supply is connected to the correct terminal.
7.5.1.4 Confirm that the power cable is in good contact.
7.5.1.5 Make sure the power supply is compatible with the label in the transmitter housing.
7.5.1.6 Power on the transmitter again.
7.5.1.7 In hazardous area, DON’T power on while the transmitter’s covers OPEN.
7.5.1.8 Please check the voltage of the transmitter power supply terminal, which should be in the
specified range.
7.5.2 Check the wiring between the sensor and the transmitter.