62
£
EK72
O2 Probe Status
* optional NX280HW expansion unit
must be installed
+1 - Offset fault
+2 - Gain fault
+4 - Heater fault
+8 - Cell mv too high
+16 - Oxygen level <18% during pre-purge
EK73
O2 Trim Status
* optional NX280HW expansion unit
must be installed
0 - O2 trim working, or
+1 – no expansion unit installed
+2 - Option 20.0 not 1 or 2,
or option 20.5 not 1,
or option 20.8 not 0
or trim not selected via aux input
or trim not selected via serial comms
+4 – O2 setpoints or flow values incorrect
+8 - Option 20.6 not 0
+16- Not modulating
+32- In commission mode
+64- Probe faulty (see EK72)
+128-Passcode for trim incorrect
EK74
O2 trim Enable
* optional NX280HW expansion unit
must be installed
0 - O2 trim disabled or inoperative
1 - O2 trim enabled and operative
EK75
Oxygen Probe Cell Temperature (ºC)
* optional NX280HW expansion unit
must be installed
Temperature of oxygen cell, nominal 650ºC.
F50 will be generated if outside the window 600ºC (after 15 minutes of
power on) to 700°C
EK76
Oxygen Error (%)
Error between O2 measured value and O2 setpoint
EK77
Trim Deviation (%) flow)
Deviation in air flow imposed by trim (-25 to +25%)
EK78
Excess Air (%)
Excess combustion air at the current firing position
EK79
Oxygen Setpoint (%)
Current oxygen setpoint. This is only available if trim is enabled and work-
ing.
EK80
Fuel Flow
Calculated fuel flow for currently selected profile. This is only available on
single fuel profiles which have all flow values entered.
EK81
Inverter Setpoint
Inverter speed setpoint (0 – 999)
EK82
Auxiliary Damper Motor Setpoint °)
Setpoint, in angular degrees
EK83
Inverter Error
Inverter speed error (0 – 999)
EK84
Auxiliary Damper Motor Error (°)
How far motor is from its setpoint, in angular degrees
EK85
Inverter Drive Response Speed
The measured time taken in seconds for the inverter to move from zero
speed to 50/60Hz.
EK86
Auxiliary Damper Motor Response
Speed (s/90°)
The measured time taken (in secs.) for drive to move over 90°.
EK87
Auxiliary Analogue Input 1
Auxiliary analogue input range as selected by option parameter 40.x.
EK88
Auxiliary Analogue Input 2
Auxiliary analogue input range as selected by option parameter 41.x.
EK89
Auxiliary Analogue Input 3
Auxiliary analogue input range as selected by option parameter 42.x.
EK90
Auxiliary Analogue Input 4
Auxiliary analogue input range as selected by option parameter 43.x.
ENGINEER’S KEY PARAMETER LIST
NO
NAME
DESCRIPTION