Electro-pneumatic Regulator ER100
Instruction Manual
rev. 2.0
page 35 / 38
5.2.
Troubleshooting
Symptom
Cause
Solution
The keys are locked.
The keys are locked immediately after the power
is turned on (or after it is turned on again).
To change various settings, unlock the keys, see
Section 4.5 “Key Lock.”
The setting does not change.
Broken operation key
Replace the product.
The auto power-off function is
activated.
Press any operation key.
If the display is recovered but it is turned off after
one minute, the auto power-off function is
activated. To cancel the auto power-off function,
see Section 4.4.3 “Auto Power-Off Setting.”
The power supply is not connected
correctly.
Connect the rated power supply correctly.
The pressure is not displayed.
Broken wire inside ER
Replace the product.
Insufficient supply pressure
Supply the primary air at least at the minimum
operating pressure.
Leakage from secondary piping
Check the piping for leaks.
An excessive pressure is displayed.
Failure of pressure sensor
Replace the product.
Check if routing from another piping causes an
excessive pressure in the secondary circuit.
The switch output function is not
activated.
See Section 4.4.4 “Switch Output Setting.”
The switch output is not turned on.
Failure of ER
Replace the product.
The switch output is not turned off.
Failure of ER
Replace the product.
Leakage at larger rate than the
maximum flow rate
Continuation of operation in this state causes
substantial reduction of the life. Examine the
operation method.
Air beyond the relief performance
flows into the secondary piping.
Continuation of operation in this state causes
substantial reduction of the life. Examine the
operation method.
While no primary pressure is supplied,
the power is turned on and input
signals are supplied.
Supply the primary pressure when supplying
power and setting the input signal.
The input signal setting is higher than
the primary pressure.
Supply the primary pressure at least at the
minimum operating pressure.
There is loud beep.
The primary pressure falls below the
minimum operating pressure.
Supply the primary pressure at least at the
minimum operating pressure.
The zero point is adjusted high with
zero/span adjustment.
Upon a high zero point, the set pressure is output
even after the power is turned off.
If the atmospheric pressure is necessary, install a
3/2-way valve or similar in the secondary circuit.
The power is turned off while the input
signal remains supplied.
Turn the power on and reduce the input signal to
0%.
This product is left for a long time
while the power is turned off and the
primary pressure is supplied.
If this product is not operated for a long time,
release the primary pressure to zero.
If the secondary pressure should rise, turn the
power on and reduce the input signal to 0%.
Even after the power is turned off,
0,05 bar or a larger pressure is output.
Failure of ER
Check the piping and wiring for faults and replace
the product.
