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When a recording output (recorder) is used
The recorder will output in the range of DC0 through 1V for the measurement ranges of respective device models.
The connected load should be 10 k
Ω
or more. Take the same wiring as in the case of the stop function above.
Connect wires to the connectors "5" and "6." Be careful not to mistake the polarity, with "5" for + and "6" for -.
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When open collector output is used
In the case of PH or OR model, connect the wires to the + and - terminals on the terminal block on the substrate.
In the case of the CD model, connect wires to terminals 1 and 2 on the connector CN12. ("1" is for +
and "2" is for -.)
Use an M3 press-fit terminal at the end of a wire for the PH or OR model. Unsheathe the end of the
wire by 5 mm for the CD model.
The output setup is shown in the figure on the right. The min. suction current is 2.5 mA. Use a
converter or the like to drive a relay or AC device.
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Wiring Method
Caution
Do not carry out wiring with the pump in operation. Be sure to turn the power off before wiring. Otherwise, an electric
shock or short circuit may be caused which will result in the malfunction of the pump.
Caution
The internal circuit remains electrically charged immediately after the power is turned off. Wiring work should be begun
at about 1 minute following the turn-off.
z
Remove the retaining screw on the terminal box and open the terminal box.
x
Take out the removable connector and the PCB connector.
c
Remove other cable nuts which are not used for wiring. Take out the blind cap and the cable gasket from the
terminal box. Then, set the cable nut and the cable gasket onto the cable to be connected. Insert the cable inside the
terminal box.
v
Use a proper connection tool for a reliable connection.
b
Upon completion of the connection work above, return the connectors to their original place.
Caution
Check that the PCB connector is inserted firmly. Failure to secure the PCB in a complete connection may cause a
malfunction of the pump system.
n
Install the terminal box by pressing the flange against the recess in the control unit housing. Fasten the retaining
screw firmly. Then, adjust the excess cable inside the terminal box and fasten the cable nut.
Caution
A cable which is 7.8 mm in outer diameter should be used in wiring. Any cable smaller than this size will result in poor
sealing and cause a malfunction of the system.
m
Designated ferrite core (Model: ZCAT, manufacturer: TDK), which is a noise reduction part, should be installed
near the external input signal cable. Install this near the control unit as closely as possible.
