| Programmable
Logic Controller: PLC  |
PLC and Remote Controlling
The acronym PLC stands for Programmable
Logic Controller. It is an
electronic calculator for technical use.
PLC is the brain of the Varimatik. It is capable of monitoring all
parameters of the system and reacting in a way that guarantees optimal
functioning.
Temperature Control
Fluid temperature is the main parameter for regulating the system.
Based on signals from the temperature probe, PLC directs the inverter and eventually the compressor case controls of functioning parameters.
The PLC controls not only the temperature of exiting fluids: the
global vision of the machine is furnished with 30 or more probes
and sensors among which:
- a pressure probe on all sides of the circuit
- oil temperature probe for compressor performance, etc
- probe that detects the concentration of ammonia in the air as well as air temperature
- Intervention for optimal functioning
The PLC is able to manage different levels
of malfunctioning of the machine.
If the machine isn’t able
to self-correct the problem, it may request the intervention of an
operator through a liquid crystal display, while in case of a malfunction,
via modem, the offices of Zudek are alerted.
Memory of stored data
The PLC conserves traces of the data of functioning and all anomalies.
This way it is possible to verify the efficiency of the system at any
time.
Remote Connection
The PLC is able to connect via modem to the central office to signal
the necessity for maintenance. The connection can also be activated
from the main headquarters, to effectuate corrections.