Clea­ning con­trol HE 5750

 

Fieldbus-supported cleaning system for large industrial filter plants

Automatic hose rupture monitoring

 

Control pre-parameterised ex works and immediately ready for use

 

Pre-assembled control boxes available

 

Parameterization either with PC software or via local operation

Controls up to 1024 valves

 

 

 

Produkt anfragen

 

 

Valve control systems for waste incineration plants

Auto­ma­tic moni­to­ring of valve and fil­ter func­tions

Espe­cially large fil­ter plants with several hund­red clea­ning val­ves and many thousands of fil­ter bags, such as those found in waste inci­nera­tion plants and cement works, should have a high degree of auto­ma­ted moni­to­ring pro­ces­ses to ensure that the plant is always fully func­tio­nal.

For this rea­son, HESCH has inte­gra­ted auto­ma­tic hose rup­ture moni­to­ring into the HE 5750 clea­ning con­trol sys­tem in addi­tion to exten­sive moni­to­ring of the clea­ning valve func­tion. For this pur­pose, only one cen­tral dust sen­sor is optio­nally requi­red, which moun­ted in the clean gas duct at the fil­ter out­let, moni­tors the dust load of all cham­bers.

 

Example cal­cu­la­tion:

When using a 500 kW fan, for example, ope­ra­tors of dust collec­tion sys­tems can reduce electri­city con­sump­tion by around 10 per­cent, saving around 22,000 euros in energy costs per year. (At a kilo­watt price of 5 cents.)

 

 

Pre-pres­sure con­trol: new fea­ture enab­les energy costs to be redu­ced

Saving energy is even more important today than ever before, due to recent high electri­city price incre­a­ses. HESCH has deve­lo­ped an energy-saving func­tion for ope­ra­tors of large fil­ter sys­tems.

The new inlet pres­sure con­trol opti­mi­zes the clea­ning pres­sure. The inlet pres­sure con­trol ensu­res that only as much com­pres­sed air is deli­ve­red as is requi­red for clea­ning the fil­ter. The con­sump­tion of expen­sive com­pres­sed air is redu­ced. In addi­tion, the upstream pres­sure con­trol also has a posi­tive effect on the ser­vice life of the fil­ter media, since the fil­ter ele­ments are sub­jec­ted to com­pres­sed air more gently than before. This lower load incre­a­ses the ser­vice life of the fil­ter ele­ments.

 

 

Filter house with old filter bags

The HE 5750 reports the exact posi­tion of the defec­tive fil­ter bag.

Accu­rate hose rup­ture loca­liz­a­tion

If one of three freely defi­ned limit values of the dust load is excee­ded, the con­trol sys­tem auto­ma­ti­cally assigns this event to the respec­tive cham­ber and trig­gers the cor­re­spon­ding reac­tion (e.g. an error mes­sage, an alarm or the shut­down of the sys­tem).

 

In this way, not only is fault-free ope­ra­tion gua­ran­teed at all times, but in the event of a hose rup­ture, immedia­tely a mes­sage is also gene­ra­ted with the exact posi­tion of the dama­ged hose row.

 

This con­si­der­ably mini­mi­zes the time requi­red to locate a defec­tive fil­ter bag and thus incre­a­ses the avai­la­bi­lity and effi­ci­ency of the sys­tem.

 

 

 

 

 

 

 

Structure of the HE 5750 cleaning system

Struc­ture of the HE 5750 clea­ning sys­tem

Struc­ture of the clea­ning sys­tem

The HE 5750 sys­tem con­trol­ler is the cen­tral unit in the CAN net­work of the clea­ning con­trol sys­tem for indus­trial bag fil­ters. The cen­tral con­trol unit com­mu­ni­ca­tes with the decen­tra­li­zed valve con­trol units HE 5724 as well as the dam­per con­trol units HE 5740 via the indus­trial CAN bus.

 

The HE 5750 cen­tral con­trol unit takes over the task of coor­di­na­ting and moni­to­ring all con­nec­ted assem­blies and com­mu­ni­ca­ting with the con­trol sys­tem.

 

The HE 5724 slave con­trol­lers con­trol the valve con­trol and moni­to­ring pro­cess. The dam­per con­trol units form the inter­face to the dam­per actua­tors.

 

The HE 5750 con­trols up to 32 slave boxes. The con­nec­tion bet­ween the func­tio­nal units is made via CAN bus.

A con­nec­tion to a con­trol sys­tem via Pro­fi­bus-DP, Mod­bus or Ether­net is stan­dard.

 

Control functions

– Real valve function monitoring with only one pressure transmitter per pressure tank
– Monitoring of the valve circuits (cable break, overcurrent)
– Monitoring valve function for proper opening and closing
– Bunker level monitoring
– Fabric filter monitoring (hose rupture) in the chambers via dust sensor
– Control of isolation valves in case of maintenance or malfunction
– NEW: Pre-pressure control for optimization of the cleaning pressure

Diagnostic options

– Pressure drop at each valve
– Dust increase with each valve
– remote monitoring
– Log files for analog channels

Applications

– Exhaust gas dust extraction in waste incineration plants and cement plants
– Flue gas dust extraction in power plants

Technical data

HE 5750
Sup­ply vol­tage24 VDC (18…30 VDC)
Dis­playGra­phic LC dis­play, 240 × 64 pixel, 133 × 39 mm
Colour: green, back­light: LED
Key­boardMem­brane key­board, 16 func­tion keys, descrip­tion cus­to­mer spe­ci­fic.
Nume­ric key­pad
Cur­sor-/con­trol block
Real time clockDate, time (power fail­ure buf­fer: approx. 1 year)
μ Pro­ces­sorSie­mens C167CR
Memory256 kByte sta­tic RAM 512 kByte FLASH data 512 kByte FLASH pro­gramm 8 kByte par­al­lel EEPROM
4 × ana­log: 4...20 mA, block gal­va­ni­cally iso­la­ted
8 × digi­tal: 24 VDC gal­va­ni­cally iso­la­ted
Out­puts8 × digi­tal: 24 VDC gal­va­ni­cally iso­la­ted
Short-cir­cuit proof
CAN-BUSAcc. ISO 11898, max. 1 Mbit/s
•   Spe­ci­fi­ca­tion: 2.0A
•   Sup­ply: gal­va­ni­cally iso­la­ted
Pro­fi­bus DPAcc. EN 50 170, max. 12 Mbit/s
•   auto­ma­tic baud rate reco­gni­tion
•   RS 485
Serial Inter­faceRS 232 and RS422 or RS 485 selec­ta­ble per soft­ware
Baud rate: max. 38400 bit/s
HousingCon­trol panel instal­la­tion
Pro­tec­tion class: front pane IP54, rear side IP20
Mea­su­re­ments295 × 200 × 40 mm (w × h × d)
Requi­red cut­ting: 265 × 170 mm
Jum­perXJ1: CAN bus ter­mi­na­tion (bus ter­mi­na­tion). Must not take place if the ter­mi­na­tion took place extern­ally at the con­nec­tion already.
aktiv inak­tiv
XJ2: dust sen­sor jum­per, ana­log or switch con­tact
XJ3: dust sen­sor jum­per, ana­log or switch con­tact
Humi­dityPer­ma­nent 75% rel. humi­dity, not con­den­sed
Shock Sen­si­vityDIN 40046 IEC68-2-69
EMVDIN EN 50081 part 1
DIN EN 50082 part 2
Electri­cal Con­nec­tion Via plu­g/­s­crew-on ter­mi­nals (max. dia­me­ter 2.5 mm²)
Cli­ma­ti­cally
  Sto­rage- 20 °C – + 70 °C
  Ope­ra­tion0 °C – + 50 °C
  Rela­tive humi­dityper­ma­nent 75% rel. humi­dity, not con­den­sed

Errors and omis­si­ons excep­ted

Downloads

Ope­ra­ting Inst­ruc­tions HE 5750 – Ger­man

Ope­ra­ting Inst­ruc­tions HE 5750 – Eng­lish

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