Mist spray system

PS255 is the mist spray system for metal stamping having electromagnetic pumps and spray nozzles. The electromagnetic pump mounted on each spray nozzle is possible to regulate the volume of oil spreading of each nozzle finely because of digital control. The nozzle sprays metalworking oil into workpiece materials uniformly by atomizing the oil at low pressure with compressed air. PS255 series that combines the controller, tanks, nozzles and others is for low kinetic viscosity oil (less than 10㎟/s) and suitable for wide range of requirements.

A, B and C are used in combination for selecting the kind of oil and the number of tank for the order code of PS255.
A-spec is one 20L tank for only one kind of oil (A). AA-spec is two 20L tanks for only one kind of oil (A). AB-spec is two 20L tanks for two kind of oil (A and B). ABC-spec is three 10L tanks for three kind of oil (A, B and C). PS255 outputs stop signal when the lower limit floating switch inside the tank becomes in the off position which is error. Other things, there are monitor mode and alternately switching mode. The former is monitoring the float switch of the tank you just selected in multi-tank.
The latter is possible to make you awake to feed oil by outputting alarm when either 20L tank out of those two becomes empty.
If you don’t feed oil, alarm output is not cancelled. But you can also continue to spraying with other 20L tank. If both 20L tanks become empty, it will output stop signal.

(Notice) In AA-spec, the oil tube line of two tanks will get together after electromagnetic valve. If use two kinds of oil, they will be mixed in the oil tube line. If slug or others are generated by mixing two kinds of oil, it might be broken or its lifetime becomes short because the structure of electromagnetic pump is very fine.

Electromagnetic pump of PS255 is powered by voltage pulse of DC 24V.
Quantity of oil transfer is controlled by both pulse width of voltage pulse (ON time of pulse (ms)) and pulse frequency (Hz).
Pulse width is related with the stroke of plunger inside electromagnetic pump. Longer pulse width bigger stroke.
Pulse frequency is the frequency of the stroke of the plunger per one second. Higher pulse frequency higher frequency of the stroke.
Quantity of oil transfer is large when pulse width is long and pulse frequency is high. But its tendency will be changed by kinetic viscosity of oil or condition of piping. If you set wrong pulse width or pulse frequency like the plunger doesn’t reciprocate normally, quantity of oil transfer becomes unstable.
Pulse width is set for each pump. Pulse frequency is set for UPPER (CH1, 3, 5, 7, 9, 11) and LOWER (CH2, 4, 6, 8,10, 12).

PS 255 was created newly by developing and improving PS 254.
Adjusting each pump drive time with flow measurement and producing proper balance. Adjust all CH simultaneously by spray frequency adjustment.

*1 Kinematic viscosity of oil should be less than 10㎟/s(cSt) at 40℃. When decrease in temperature, kinematic viscosity of oil increase and then it brings about the possibility of decreasing quantity of oil transfer significantly due to the influence of piping resistance. Please inform us about both the kinematic viscosity of the oil to be used and how much oil amount of spray you consider when introducing our mist spray system.