Electro-pneumatic Regulator ER100
Instruction Manual
rev. 2.0
page 5 / 38
•
To avoid malfunction caused by electrical noise:
・
Insert a line filter into the AC power line.
・
Use a surge suppresser like a CR or diode on the inductive load
(solenoid valve, relay and so on) to remove any noise on the source.
・
Keep cables connected to this product as far away as possible from
power line.
・
Use a shielded cable to connect a device.
・
The shielded wire should be grounded on the power supply side.
・
Wire the power line as short as possible.
・
Don’t share the power with devices that generate the noise, such as
inverter motor.
・
Avoid to wire the power line or input signal line in parallel with other
lines.
•
When the current input type is wired, the power ground and signal
common are shared.
・
When driving several electro pneumatic regulators with one PLC and D/A
-unit, depending on the D/A-unit circuit, this wiring could cause some
malfunction on the input signal. Consult your PLC maker and check
whether it is possible to do this type of wiring or not.
•
The current input type can be used with input signal 1 to 5V, but as
opposed to other voltage input types, the input impedance is small
(250
Ω
). Use an appropriate voltage generator.
•
Please observe that bad air quality affects its characteristics,
functionality and durability in a negative way.
・
For the pneumatic source, use cleaned air from which the solids,
water and oil contents were eliminated sufficiently, using an air dryer,
filter and oil mist filter.
Do not use lubricated air as it may compromise the characteristics
and functionality.
Air filter
5µm
Air dryer
Oil mist filter
(oil removing)
Pressure switch
Regulator
・
When the secondary pressure is reduced with an input signal, etc.,
secondary air passes through the product inside and is discharged from
the main exhaust port (EXH). Contamination of secondary piping and
the inside of the load will therefore compromise the characteristics and
functionality etc. Keep the inside of the piping as clean as possible.
•
If the power is turned off under pressure, the secondary pressure is
held at its last value. However, this maintained pressure is not
guaranteed to last for very long.
・
In this case, if you need to exhaust the secondary side, reduce the
control pressure by reducing the control voltage/current first and then
turn off the power or use the exhaust valve.
•
Since the supply pressure is supposed to provide the exact control
pressure, it is important for the working pressure not to drop below “set
secondary pr 0,5 Bar ” for model ER104-1* or drop below “set
secondary pr 1 Bar ” for all other models.
・
N.B
. If the supply pressure is not supplied for a long time while power is
ON, product life is reduced. Avoid therefore this type of use.
!
CAUTION
:
