Basler Electric DGC-2020HD - Manual (Page 328)

318 9469300990 Rev B
AEM-2020 DGC-2020HD
is not running, and does not become active until after the engine is started and the arming delay has
elapsed.
Thresholds
There are four programmable thresholds for each remote thermocouple input element. Each threshold
has a mode setting, threshold setting, activation delay setting, and an alarm setting.
Mode
The mode can be set for Over or Under. If Over mode is selected, an alarm is annunciated when the
metered input increases above the Threshold setting for the duration of the Activation Delay. If Under
mode is selected, an alarm is annunciated when the metered input decreases below the Threshold setting
for the duration of the Activation Delay.
Alarm Configuration
Each remote thermocouple input protection threshold item can be independently configured to annunciate
an alarm or pre-alarm, or be configured as status only when the metered input falls beyond the threshold.
A user-adjusted activation delay setting delays alarm annunciation until after the threshold has been
exceeded. Remote thermocouple
input protection is disabled when Alarm Configuration is set to “None”.
Logic Connections
Remote thermocouple input protection logic connections are made on the BESTlogicPlus screen in
BESTCOMSPlus. The Thermocouple Input 1, Threshold 1 Status Input logic block is illustrated in Figure
199. The output is true during a trip condition. The alarm and pre-alarm logic blocks are similar.
Figure 199. Remote Thermocouple Input Protection Logic Block
Operational Settings
Remote Thermocouple input protection operational settings are configured on the AEM x Thermocouple
Input #y (where x = 1 to 4 and y = 1 or 2) settings screen (Figure 200) in BESTCOMSPlus. Settings are
listed in Table 89.