Tower type asphalt batching plant with Yoke centralized lubricating system for mixer and dryer
The common method of trouble removal
. Computer and PLC do not communicate.
# Check the communication cable between computer and PLC for linkage error.
# Check the soldering tins on two heads of cable for shelling.
# Check the computer serial interface for damage.
# Check the TDPRO operating system for damage.
# Check the softdog for loose.
# Check the communication modules of PLC for loose or damage.
# Check the operation state of PLC to judge if it is RUN
. Fail to print producing data.
l Check the communication cable between computer and printer for linkage.
l Check the printer power for on or off.
l Check the computer for real time printing mode.
l Check the printer for papers.
. Fail to indicate the weight correctly:
# The weight display on computer and the revision of CB920 is not set correctly.
# The analog signals module of CB920 is damaged.
# The weighing sensor is damaged.
# The A/D module of PLC is damaged.
# The weighing sensor is overloaded.
. Periphery electromotor fail to work
# Air breaker Tripped.
# Overload-protection of hot relay in secondary circuit acts.
# Electromotor is damaged.
# Electromotor is overloaded.
. External actuator does not work
# Check PLC for the failure of sending instructions.
# Check the air breaker in secondary circuit for overload-protection.
# Check the relevant relay for damage.
# Check the air valve for damage.
. The transducer of finished product hoppers work abnormally
# The promotion load for trolley is too large.
# The deceleration time for trolley is too short, and the rebirth energy of electromotor is too great.
# The linkage of transducer brake unit becomes flexible or damaged.
# The linkage of transducer brake resistance becomes flexible or damaged.
# The voltage of V/F is too high.
composition of vibration exciter on mixing tower of hot mixing asphalt batching plant