Tacmina PW Series, Руководство по эксплуатации

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46
Tr
oub
leshooting
Troubleshooting
When the signal input mode is established
Description of trouble Cause Remedial action
Operation is not per-
formed as per the set
frequency-division or
magnification (when
pulse signals are
input).
Noise is being carried on the signal line.
Place the signal line away from the power line.
Alternatively, use a shielded cable for the sig-
nal line.
There is no flow of
signals up to 20 mA
(when analog signals
are input).
The power to drive the signals is insufficient.
Check the maximum drive resistance of the
signal source.
No keys except for
STOP/START work.
The keys have been locked. Release the key lock. (See page 31)
E-OO is displayed. Refer to the alarm codes. Refer to the alarm codes.
Error code
When the error occurs, the following code appears on the display.
Error code Type Cause of alarm
Action to take when an alarm
occurs
E-02 Level error
The chemical liquid remaining in the tank
has dropped to a low level. Replenish the chemical
liquid in the tank.
E-04 Pulse overflow
The buffer size has been exceeded in the
pulse input-based propor tional control.
(Buffer size: 32)*
• Review the setting.
•
Review the pump model.
E-05 Analog error
This code is output when the analog input
value has dropped below the lower limit (2
mA or less) or has risen above the upper
limit (22 mA or more).
Check the wiring connec-
tions.
E-06
Abnormal pressure error (when
the SAFE mode is disabled) This code is output when the discharge
pressure increases to an abnormally high
level regardless of whether the safety func-
tion is enabled or disabled.
Return the piping pres-
sure to the normal level.
E-07
Abnormal pressure error (when
the SAFE mode is enabled)
* The buffer size is the upper limit of the number of unprocessed pulses that the pump body can record when pulse
input is received again during pump operation by pulse input-based proportional control. When the number of unproc-
essed pulses exceeds the buffer size (32), subsequent pulse input is automatically canceled. To display and output an
alarm in this case, set “Pulse overflow error” (P-02) to Enabled (1) in the parameter settings. (Refer to “Parameter set-
tings.”)
●
Remedial action taken in the pulse modes
Mode Cause Remedial action
Common to
b o t h p u l s e
modes
• Chattering in the pulse output
•
The output pulses and signal specifica-
tions do not match.
• Replace with a unit free from chattering.
• Change the pump.
Frequency-
division
• The frequency-division ratio is too high.
• The stroke speed is too slow. • Replace with a unit that meets the signal specifications.
•
Increase the stroke speed (example: 50 -> 300 strokes/min.)
Magnification
• The magnification is too high.
• The stroke speed is too slow. • Replace with a unit that meets the signal specifications.
•
Increase the stroke speed (example: 50 -> 300 strokes/min.)
●
How to release the alarm
(1) Stop the pump.
(2) Initiate automatic reset by recovering the status.
(3) Stop the supply of power to the pump.
33-66(白)̲EM-127̲PW(E).indd 46 2014/11/17 11:56:44