Screw pneumatics machine is using the hard to avoid in the process for a long time to be able to appear all sorts of problems, can spark right now call the police. Fall in summertime high temperature especially, screw pneumatics machine appears more possibly again and again state. So, of pneumatics machine a few is calling the police those circumstances respectively? Are its urgent, serious does degree have again why to differ? Will quickly understand!

2 class call the police

Oil level calls the police: After compressor is started, be like 1/3 of oil level prep above (switch of low oil level) continue, spark under 1/3 otherwise low oil level beforehand signal, and last continuously 20S, call the police “ low oil level calls the police”Move suspend a program.

Oil pressure difference calls the police: After compressor is started, if oily filter presses difference to be less than 2bar to continue, call the police to “ oil pressure differs big ” and move otherwise suspend a program.

Tall low-pressure difference calls the police: Compressor electric machinery gets report, 20S begins to undertake high low pressure presses difference to detect, if on any account presses pressure difference to be more than 1.5bar to continue, call the police otherwise “ is not worth ” for oil pressure force and SV1 of electromagnetism a powerful person breaks phone, fluid canal cuts off a powerful person to break phone, electric machinery cuts off the power; After compressor is started, difference of high low-pressure pressure is more than 4bar to continue, call the police otherwise “ is not worth for oil pressure force”Move suspend a program.

Buy temperature passes inside tall call the police: Compressor PTC control gets report, if inside buy PTC thermal resistor detects electric machinery temperature under 110±5 ℃ and in-house vent temperature continues under 90±5 ℃ , call the police otherwise temperature of the buy inside “ calls the police ” offers signal to cannot close contactor of compressor electric machinery; In reducing accident travel process, if inside buy PTC thermal resistor detects electric machinery temperature under 130±5 ℃ and in-house vent temperature continues under 110±5 ℃ , call the police otherwise temperature of the buy inside “ calls the police ” moves suspend a program.

One class calls the police

(protection calls the police)

Exhaust temperature crosses high protection: In reducing accident travel process, if discharge air temperature to call the police under the design temperature 100 ℃ continue, otherwise prep above 100 ℃ , and last continuously 2min, call the police tall ” of “ exhaust temperature, move suspend a program.

Exhaust pressure is exorbitant protection: In reducing accident travel process, if discharge air pressure under 2.2MPa of design alarm pressure (value, corresponding and different system) continue, call the police otherwise tall ” of “ exhaust pressure, move suspend a program.

The pressure that return vital energy crosses low protection: In reducing accident travel process, if answer baric force prep above to design alarm pressure 0.03MPa (value, corresponding and different system) continue, spark otherwise the pressure that return vital energy is low beforehand signal, and last continuously 10S, call the police “ answers baric force low ” , move suspend a program.

(the bypass of “ low pressure related bypass electromagnetism a powerful person is unusual ” , “ low pressure is decreased carry unusual ” , in dominating program accordingly demonstrative paralell connection adds up to low pressure to call the police judgement)

Overload: Power is exorbitant, exceed set value, output unusual signal, call the police ” of “ compressor overload. (PLC project did not detect alone, with shed protection to all be monitored with hot afterwards too)

Appearance sequence: Appearance sequence protector outputs unusual signal, call the police “ photograph order is unusual ” .

Flow too: Electric current is exorbitant, exceed set value, output unusual signal, call the police “ compressor transfers ” . (PLC project did not detect alone, with shed protection to all be monitored with hot afterwards too)

Do not explain especially

Call the police level:

0 class call the police: Interlocking stop machine is hand-in-hand into protective condition, need mechanical switch hand to move restoration. (urgent call the police)

One class calls the police: Clew calls the police and stop to move by the requirement, need is received remove trouble and the hand moves restoration; (protection calls the police)

2 class call the police: Clew calls the police and stop to move by the requirement, the examination is eliminated unusual later restore automatically; (restoration calls the police)

3 class call the police: Do clew not to participate in a movement only, need hand is moved cleared call the police. Already before demonstrative condition (unusual call the police)

Temperature protection: In all 3 class, ordinal carry to decrease, outside buy exhaust temperature, inside buy PTC is protected (exhaust, electric machinery)

Relevant premise:

Compressor PTC control gets report: Screw compressor shares two power source to introduce, give priority to power supply source respectively (380V) with protective power source (220V) . PTC is power supply of protective power source.

Compressor electric machinery gets report: Screw compressor advocate power supply source puts through.

After compressor starts: Screw compressor is pressed switch on the mobile phone normally program to load comes 50% finish to start.

In reducing accident travel process: Screw compressor is in 50% , 75% , condition of these 3 100% bear moves.

Origin: Network