Automation of the process of degreasing and drying components in the technological line for hot-dip galvanizing.

Scop of work:
Circuit design Electrical and automation system design
prefabrication and supply of control and distribution cabinets,
PLC and HMI software
cabling,

Implementation
The completed systems included:
the loading and unloading of hanging components on traverse beams, designated for further processing in the hot-dip galvanizing line;
control of flaps opening and closing the degreasing dock;
control of dampers responsible for directing exhaust gases from the zinc-heating gas furnace to dry degreased components;
control of exhaust fans in the drying cycle.
control of the chain conveyor for traverse beams in the dryer.
SAFETY system.

Applied devices and equipment.
The following devices were used to accomplish the task:
SIEMENS S7 1200 freely programmable controller,
79 discrete PLC I/O (input/output) modules,
4 analog inputs for the PLC,
HMI panel KTP 700,
traverse presence sensors – PEPPERL&FUCHS brand,
for MODBUS communication purposes,
10 iS7 frequency converters,
2 sets of DBU units with braking resistors, (fans in the drying cycle),
In the SAFETY system, a PILZ safety relay of the type PNOZ5.
LSIS switchgear and protective devices.