Electrostatic Precipitator Integrated ESP Controller with one circuit board EPIC-II system Power Supply 24V AC DC

EPIC II system

The EPIC II (Electrostatic Precipitator Integrated Controller) system is an ALSTOM Power second generation microprocessor based control system for electrostatic precipitators. With a separate control unit and display unit, a new degree of design freedom is achieved.

The new EPIC II concept consists of two major components of which only one is needed for basic operation.

- EPIC II main unit, includes all processing power.

- Remote Terminal Unit (RTU), needed only as an operator interface.One RTU can serve as the operator interface for many EPICs ProMo, colour graphic software package, host computer gateways with different software protocol and MTU, Master Terminal Unit is available as an option.

EPIC II controller

The EPIC II is a microprocessor based unit for regulation and control of the electric power input to electrostatic precipitators. The EPIC II maintains the spark rate at a suitable level for large variations of gas temperature, dust composition, gas flow, etc. It regulates the rectifier in such a way that the current through the electrostaticprecipitator is corrected as the conditions for sparking change. The whole operation can be monitored by the RTU , ProMo and host computers.

The EPIC II gives alarm messages to the operator when values are lower or higher than set, if one or several alarm contacts are activated etc. All alarm messages are displayed on and may be reset from RTU, ProMo, etc.Six operating modes can be predefined and then selected for each individual EPIC II.

The EPIC II has a Master function which means that one EPIC II, defined as master unit, can control all EPIC IIs in the FläktBus system and achieve greater total ESP performance.

Operation together with the optional EPOQ algorithm, Electrostatic Precipitator
Optimizing Q, optimizes the best collection efficiency at different load conditions.
The EPIC II contains one circuit board mounted in the enclosure. The circuit board holds all functions

needed for the complete controller:
Power Supply feed from 24V AC or DC.
One 16 bit Microprocessor with software.
One 16 bit Microcontroller with software.
Data acquisition analog and digital.
Ignition circuits for the SCR.
Non-Volatile Memory (EEPROM, no battery needed) for storing of system parameters.
Non-Volatile Memory (EPROM) for storage of control software.
Real Time Clock (capacitor backed, no battery needed.
Field Bus Communication (FläktBus) for communication with RTU, ProMo, Gateway and other

connected EPIC II units