
[SM‑276677‑A]−3−
MOUNTING, INSTALLATION AND ADJUSTMENT
1)Be sure to follow the instructions provided below. Failure to follow these
instructions may hamper normal pressure control.
*Never adjust the primary pressure to less than that of the secondary pressure
+0.049MPa while the input signal is on.
*Never send an input signal (this includes the power supply with the voltage
input type) when the primary pressure is at atmospheric level.
*Install a pressure switch capable of detecting the ER300 primary pressure and
turning off input signals (this includes the power supply with the voltage input
type) to the ER300 when pressure is reduced.
Reference:
The pressure switch setting must be the maximum set pressure +0.049MPa or
more, at the ER300.
*Never connect the power supply and input signal groundingline to the ER300
body.
2)The best measures against noise such as of solenoid valve etc. is through surge
protection with CR, Diode (DC) etc.
The following measures are also acceptable:
* Separate the power line from the ER300 signal cable.
* Connect the ER300 signal cable with the shield cable. *1
* Install a line filter in the ER300 source power supply (for example, when using
the DC power supply pack, install in the DC power supply pack AC side).
Warning:
When the above precautions are not provided, normal pressure control cannot
be guaranteed.
Important: * Connect the shield to the GND.
* For the connection between the V, S, and M terminals, divide
the
shield cable.
*When only the 2-core shield cable is available mate V-C, S-C,
and M-C.
3)The monitor output signal voltage differs with the device type, and varies
individually in the certainrange among the products.
When using the function, confirm the output voltage.
Monitoring accuracy will not differ at either output voltage level.
When connecting various types of detector devices to the monitor output, use
those with an input impedance of over 1MΩ.
USAGE AND MAINTENANCE
1)When the primary side pressure is applied to the unit, do not loosen the screw
securing the orifice. Otherwise, the orifice will fly out.
2)Do not disassemble the unit because it will fail. Operations of the disassembled
unit will not be guaranteed.
!
!WARNING