background image

  

 

No.

Name

Description

EK21 

Positions proved 

0 - Drives have stopped moving, ready for 
position prove test. 

1 - Ready for position prove test but drives still 
moving.

EK22 

Fault alarm 

0 – No un-muted alarms (faults) present. 
+1 - Un-muted fault alarm present (prefix : F) 
+2 - Un-muted limit alarm present (prefix : L) 
+4 – Un-muted flue-monitoring alarm present 
(faults 50 to 59). 

EK23 

Oxygen Trim Enable 

0 – Oxygen trim off or not working. 
1 – Oxygen trim on and working. 

EK25 

CAN_TX Failures 

  A count of the number of times the can bus 
controller has failed to send a message since 
power-up. This should be zero unless there has 
been a problem. 

EK26 

Commission status 

Current commissioning mode, where : 

0 - Normal run mode. 
1 - Adjust ratio mode. 
2 - Commission ratio mode. 

EK27 

Commission setpoint 

The current setpoint being commissioned. 

0 - Closed setpoint. 
1 - Purge setpoint. 
2 - Ignition setpoint. 
3 - Low fire setpoint. 
4 - 24 - profile setpoints 

EK28 

 Commission Setpoints entered 

 The number of setpoints that have been 
successfully entered during this commission ratio 
session. 

EK29 

Modulation rate (%) 

The current modulation rate of the burner. 
0 = Low Fire 
100 = High fire 

EK30 Burner 

Status 

 Status of the start-up sequence. See section 4.2 
of Fireye Bulletin PPC-6001 

EK31 

Fuel Profile Selected 

 The currently selected fuel profile. 

Summary of Contents for PPC6000 Series

Page 1: ...__________________________________2 3 Password _______________________________________________________2 4 Adjusting Cut IN and Cut OUT_____________________________________3 5 Manual Modulation _______...

Page 2: ...value and press the ENTER COM key 3 Password The only password an operator should require is the site Passcode This can be set as a number from 0 999 The factory default number is 154 The site Passcod...

Page 3: ...alue Meaning 0 No limits The burner will run until another method is used to switch it off 1 Absolute limit The values entered in option parameters 21 6 22 6 and 21 7 22 7 are the actual limit values...

Page 4: ...own on the display This function can be disabled via option parameter 1 1 To do so requires the suppliers highest passcode 6 Resetting the Control To reset the Nexus the MUTE RESET key will have to be...

Page 5: ...free to modulate 1 Measured value below warming limit burner held at low fire if the control is in auto or sequencing mode EK18 Boiler status 0 Burner will not fire because the temperature pressure me...

Page 6: ...essage since power up This should be zero unless there has been a problem EK26 Commission status Current commissioning mode where 0 Normal run mode 1 Adjust ratio mode 2 Commission ratio mode EK27 Com...

Page 7: ...nearest to the current modulation position EK37 Voltage reference error V The error between the measured voltage reference and the calibrated value 0 12 is the limit The displayed value shows volts NO...

Page 8: ...ut or trim not selected via serial comms 4 O2 setpoints or flow values incorrect 8 Option 30 6 not 0 16 Not modulating 32 In commission mode 64 Probe faulty see EK45 EK47 Oxygen setpoint Current oxyge...

Page 9: ...al Output 7 ON Daughterboard PZ15 PZ16 LOW VOLTAGE AND CURRENT ONLY 128 Digital Output 8 ON Daughterboard PZ17 PZ17 LOW VOLTAGE AND CURRENT ONLY EK61 Analog Input 1 Main Unit Terminal PB9 also boiler...

Page 10: ...task time The current longest internal software task time This is provided for manufacturers diagnostics only and may be removed in future versions EK76 Longest task number The current longest interna...

Page 11: ...xed by a letter This letter describes the status of the fault F This means that a fault e g PSU calibration fault has occurred and is still present The fault may be internal or external to the unit L...

Page 12: ...at least four setpoints commissioned x Use commission ratio mode to enter more setpoints Subset fuel code F19 Circuit board voltage reference fault The circuit board has an incorrect on board referen...

Page 13: ...than five degrees 3 During pre purge ignition or post purge when a drive moves from its setpoint 4 During modulation when a drive is not at its correct setpoint as defined by the commissioned fuel ai...

Page 14: ...to the control x This could be due to high levels of electrical interference getting into the product Check all cables are correctly screened and screens are terminated correctly Ensure the mains supp...

Page 15: ...5 and re commission or restore with option parameter 45 2 x This could be due to high levels of electrical interference getting into the product Check all cables are correctly screened and screens are...

Page 16: ...en level exceeded 15 0 during auto trim commissioning The burner is shutdown Subset Last auto trim commission setpoint 32 if adding air L58 Flue temperature low alarm value exceeded The measured flue...

Page 17: ...he engineer to ensure the new servo is mechanically fixed the same way as the original one Subset Invalid profile 100 101 to 104 3 The selected profile has been uploaded from a PC but has not been ver...

Page 18: ...st steam boilers When using only a proportional control the system rarely achieves set point as the burner firing rate is lowered as the pressure comes up At some point the input meets the actual dema...

Page 19: ...4 for set point 1 PID1 and 22 2 22 3 and 22 4 for set point 2 PID2 These values are adjustable using the Site Passcode 154 11 The Startup Shutdown Stages The startup shutdown stages are as follows Sta...

Page 20: ...The fuel and air motors are moved down until they are stopped by the closed position micro switches in the servos The final positions are compared with the closed positions stored in memory and must...

Page 21: ...fuel profile select input is removed PE9 10 11 or 12 the control will immediately move to status 1 10 Ignition The controller confirms all required drives are at their ignition positions and gives an...

Page 22: ...sing PA9 PA11 this control will move to status 17 If the AUTO input is removed by opening PA10 PA11 this control will modulate down to low fire then jump to status 15 Note Terminal PE7 will not be ene...

Page 23: ...23...

Page 24: ...ch is found defective in material or workmanship or which otherwise fails to conform to the description of the product on the face of its sales order THE FOREGOING IS IN LIEU OF ALL OTHER WARRANTIES A...

Reviews: