AEM 30-4900 Wideband Failsafe Gauge - Manual (Page 13)

Page 14
Plot One
Parameter Description
AFR Current measured AFR (Gasoline)
AFR Upper Limit Current upper AFR limit value as set from the Wideband Failsafe Configuration tab
AFR Lower Limit Current lower AFR limit value as set from the Wideband Failsafe Configuration tab
Plot Two
Parameter Description
Manifold Pressure Current measured Manifold Pressure in PSIg
Engine Speed Current measured RPM, if connected and used
AEM EMS Series 1 / Series 2 Parameters
Below is the Wideband Failsafe related parameter names found in the AEM EMS Series 1 & 2
programmable ECU software when using the AEMNet daisy-chain. Note the slight difference in
nomenclature used with the AEM Wideband Gauge. Use the descriptions listed above for detailed
information.
AEM Wideband Failsafe Gauge Name AEM EMS Series 1/Series 2 Name
AFR [AFR Gasoline] WBFS AFR
AFR Upper Limit [AFR Gasoline] WBFS Up Limit
AFR Lower Limit [AFR Gasoline] WBFS Low Limit
Manifold Pressure [psi] WBFS Boost
Engine Speed [rpm] WBFS RPM
Alarm Status WBFS Alarm
Alarm Reset Limit [ms] WBFS Alarm Rst Lmt
Alarm Reset Counter [ms] WBFS Alarm Rst Cnt
Alarm Delay Limit [ms] WBFS Alarm Dly Lmt
Alarm Delay Counter [ms] WBFS Alarm Dly Cnt
Alarm Status WBFS Status
Plot Three
Parameter Description
Alarm Source
Indicates what triggered the alarm condition; 3-low AFR condition, 5-high AFR condition, 3-
auxiliary input, 9-alarm test
Alarm Status Indicates state of alarm; 1-alarm triggered, 0-alarm not triggered
Alarm Reset Limit Alarm Reset value
Alarm Reset
Counter
Counts up from zero to Alarm Reset value once AFR has returned into the acceptable range
Alarm Delay Limit Alarm Delay value
Alarm Delay
Counter
Counts up from zero to Alarm Delay value when AFR occurs outside the high or low AFR
limits; once full Alarm Delay value is reached the alarm will trigger; counter will reset back to
zero if AFR returns back into the acceptable range once count up has began