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SEQUENCER CONTROLLER  

WITH OR WITHOUT 

DIFFERENTIAL PRESSURE MEASUREMENT

 

 

 

 

Technical Notice               

  FI 72.0308.0316E 

 

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SUMMARY: 
 

 

 
 

  DESCRIPTION : 

 

The  SDS3  is  a  sequencer  for  the  command  and  control  of  dust-

removal equipment.  

 
It can be equipped of the differential or relative pressure measure 

(pressure drop). 

 
It is equipped with a T1 time (pulse time), a T2 time (rest/idle), a 

T3 time (rest time between two cycles), a T4 time which performs a 
cleaning cycle if the sequencer has not operated for a set number of 
hours,  a  manual  running,  an  electrical  fault  control,  a  possibility  to 
execute  a  preset  number  of  cycles  at  fan  stop,  three  pilots  for 
pneumatic valves. 

In  option,  it  can  be  equipped  of  a  relay  output  for  fault  or  alarm 

report of information and of a loop control input (I1: fan or other). 

 
If  the  device  is  equipped  of  the  pressure  measure,  it  is  equipped 

with  a  loop  control  to  DP  measure  (2  thresholds),  two 

P  alarms 

(high  and  low),  a 

P  threshold  for  accelerated  cycle,  a  T2A  time 

(accelerated idle time). 

 
The device is adjustable depending on the use. 
 

All the operating parameters are adjustable through sensitive keys 

on the front.  

 
The  value  of  each  parameter  and  the  pressure  are  displayed  on  a 

LED display.  

 

Comment: this data sheet is drawn up on the basis of a device 

equipped  with  the  pressure  drop  measure.  If  the  device  is  not 
equipped with the pressure drop measure, the functions relating 
to  this  are  not  validated.    The  options  on  the  device,  define  the 
terminal board and the Glands configurations. 
 

The information concerning the device equipped with the 

pressure measure are in grey colour. 

 

 

 

 

 
 

 

   

 

Page 

- DESCRIPTION 

- CHARACTERISTICS 

- PRESENTATION OF THE 
FRONT PANEL 

- PRESENTATION OF THE 
KEYBOARD 

- ADJUSTMENTS & 
RUNNING 

- HIDDEN MENU 

  

10 

- THE SIGNALLING IN 
FRONT PANEL 

10 

- CONTROL / FAULTS 
DISPLAY 

11 

- CONNECTIONS 

11 

- SPARE REQUIREMENT 
AND FIXING 

- RELAY OUTPUT 

12 

  

13 

- PRECAUTIONS 

13 

- CALIBRATION 

13 

- SPECIFICITIES 
AVAILABLE ON REQUEST 

13 

 

 

 

 

- GENERAL 
INSTRUCTIONS FOR 
SAFETY, ASSEMBLY, 
COMMISSIONING, AND 
MAINTENANCE 

14 

- WARRANTY 

15 

- CONFORMITY 

15 

 

 

Содержание SDS3

Страница 1: ...Technical Notice FI 72 0308 0316E Page 1 sur 15 Version with display panel And DP measurement PLACE GUTENBERG 59175 TEMPLEMARS France Tel 33 0 3 20 60 49 49 Fax 33 0 3 20 95 59 62 Email contact sefram...

Страница 2: ...high and low a P threshold for accelerated cycle a T2A time accelerated idle time The device is adjustable depending on the use All the operating parameters are adjustable through sensitive keys on t...

Страница 3: ...tput T1 from 3 100th to 255 100th of a second Idle time between two outputs T2 T2A if eqquiped with DP from 1 to 255 seconds Idle time between two cycles T3 from 0 to 255 minutes Forced declogging tim...

Страница 4: ...approach the finger in front of the wished key through the transparent cover The access to Reset and Select keys is locked by the padlock key To lock or unlock the keyboard it is necessary to keep the...

Страница 5: ...ading position if it s equipped with the DP Comment The return to the CYCLE position or pressure reading position if it s equipped with the DP is automatic after 30 seconds unless in cycle position Ea...

Страница 6: ...an 5 seconds low DP alarm If the DP measurement goes above this threshold for longer than 5 seconds no low DP alarm Note if the low DP alarm is set at 000 it is inactive no low alarm generated 7 Thres...

Страница 7: ...le time between two cycles in minutes 0 inactive 15 Setting T4 Maximum non cleaning time in hours 0 inactive If the sequencer has not performed any cycle for the set number of hours the cycle in cours...

Страница 8: ...pped with the DP through the disappearance of pressure as soon as it becomes lower than a value variable from 5 to 20 daPa If there is a DP sensor present the setting of the type of detection of the f...

Страница 9: ...dP choice If fan stoppage detection is through TOR input o If loss of the input I1 the stoppage of the fan is established the sequencer carries out the parameterised number of cycles and stops If the...

Страница 10: ...menu led DP high alarm low alarm is blinking rapidly if DP option is present Visualisation of the recording of the maxi DP value and by pressing ou button visualisation of the recording of the mini D...

Страница 11: ...or passing into T2A 2 dEF if electrical fault output always supplied short circuit Appears if a current consumption has been detected on one of the outputs whilst it is inactive 3 dxx if electrical fa...

Страница 12: ...H OR WITHOUT DIFFERENTIAL PRESSURE MEASUREMENT Technical Notice FI 72 0308 0316E Page 12 sur 15 SPACE REQUIREMENT AND FIXING dirty air side clean air side Connections for 6 8 mm tube Instantaneous con...

Страница 13: ...characteristics data humidity maxi pressure etc For special operating conditions consult us Work interventions must always be carried out by duly qualified staff CALIBRATION The device leaves our wor...

Страница 14: ...he device is supplied through the intermediary of an insulation transformer for which the primary is supplied between phases and not between phase and neutral so as to avoid any accidental over voltag...

Страница 15: ...permitted and the unit must be returned to the following address For ATEX devices no intervention Any action on the devices is forbidden You must send us back the device in our workshops otherwise the...

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