Symptoms:
Press the mixer start button on the console, the mixer will not start.
Cause Analysis:
1. The air compressor is not started or the pressure of the air supply system has not reached 0.4MPa.
2. The overhaul protection switch of the stirring main engine and the emergency stop switch with key on the main engine are not connected.
3. The emergency stop switch on the console has not been reset.
4. The host power switch is not turned on.
5. The host stop signal must be reset.
Processing process:
1. Check whether the compressed air detection signal (air pressure signal greater than 0.4MPa) is sent to the PLC, that is, whether there is a signal on I8.0. If I8.0 has no signal, check whether the air compressor pressure is greater than 0.4MPa. When the pressure reaches above 0.4MPa, I8.0 has no signal, then check whether the adjustment of the electric contact pressure gauge is normal or damaged until I8.0 has Signal.
2. Check whether the switching signal of the maintenance protection switch of the mixing main engine is sent to the PLC, that is, whether there is a signal on I9.7.
3. Check whether the emergency stop switch on the console is reset and whether I0.1 has a signal.
4. Check whether the power switch of the main unit is turned on, and whether there is a signal on I3.4.
5. Check whether the host stop button is reset and whether I5.2 is connected.