Automation board ShCHAD-S is a modern solution for automating the water deaeration process based on a microprocessor controller with an operator touch panel.

Advantages:

convenient informative mnemonic diagram of water deaeration
registration of technological parameters
event logging
logging of operator actions
measurement, parameter display
regulation of technological processes
alarm parameters alarm
protection against emergency processes
uninterruptible power supply
surge protection, surge protection
power failure signaling
interface for information output to the control room - RS-485

Control loops:

PID water level controller
PID water temperature controller
PID controller for deaerator pressure

Light and sound alarm:

minimum water level
maximum water level
deaerator pressure low
water pressure before evaporative cooler is high
manual emergency stop of the deaerator

Protection :

minimum water level
maximum water level
deaerator pressure low
water pressure before evaporative cooler is high
manual emergency stop of the deaerator

Scheme of automation of the deaerator based on the shield Shchad-S

Input analog signals:

Water temperature: 100M, 100P, Pt100, 4-20mA, 0-20mA, 0-5mA; 0-1V;
Water level: 4-20mA, 0-20mA, 0-5mA; 0-1V;
Deaerator pressure: 4-20mA, 0-20mA, 0-5mA; 0-1V;

Input discrete signals (dry contact switching voltage DC 24V or AC 220V):

minimum water level - dry contact
maximum water level - dry contact
minimum pressure in the deaerator - dry contact
pressure in front of the vapor cooler maximum - dry contact

Output control signals (valve supply voltage DC 24V or AC 220V):

water supply valve control (level circuit)
1. 0-10V
2. 4-20mA
3. more / less regulation
steam valve control (temperature circuit)
1. 0-10V
2. 4-20mA
3. more / less regulation
steam valve control (pressure circuit)
1. 0-10V
2. 4-20mA
3. more / less regulation

Output discrete signals:

deaerator failure - dry contact

Characteristics:

Power parameters: AC 220V, 50Hz, 0.6A
Protection class: IP54
Service life: 8 years
Warranty: 12 months
Size (HxWxD): 800 x 600 x 250 mm

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Shchad-S deaerator automation board

Shchad-S deaerator automation board

Scheme of automation of the deaerator based on the shield Shchad-S

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