Basler Electric DGC-2020HD - Manual (Page 327)

9469300990 Rev B 317
DGC-2020HD AEM-2020
Table 88. Settings for AEM x RTD Input #y
Locator Setting Range Increment Unit
A Label Text n/a n/a n/a
B Hysteresis 0 to 100 0.1 %
C RTD Type
10 Ohm Copper or
100 Ohm Platinum
n/a n/a
D Arming Delay 0 to 300 1 seconds
E Out of Range Alarm Type
Status Only, Pre-
Alarm, or Alarm
n/a n/a
F Mode
Disabled, Over, or
Under
n/a n/a
G Threshold
–50 to 250 1 degrees C
–58 to 482 1 degrees F
H Activation Delay 0 to 300 1 seconds
I Alarm Configuration
Status Only, Pre-
Alarm, or Alarm
n/a n/a
Remote Thermocouple Inputs Configuration
Two remote thermocouple inputs provide metering of exhaust temperatures. An element can be
configured to trip when the metered input increases above or decreases below the user-defined
threshold.
The two, identical remote thermocouple input protection elements are designated AEM x Thermocouple
Input #1 and AEM x Thermocouple Input #2 (where x = 1 to 4). Element logic connections are made on
the BESTlogic
™Plus screen in BESTCOMSPlus® and element operational settings are configured on the
AEM x Thermocouple Input #y (where x = 1 to 4 and y = 1 or 2) settings screen in BESTCOMSPlus.
BESTCOMSPlus Navigation Path: Settings Explorer, Programmable Inputs, Remote Thermocouple
Inputs
Front Panel Navigation Path: Settings Explorer > Programmable Inputs > Remote Thermocouple Inputs
Input Setup
Label Text
In order to make identification of the remote thermocouple inputs easier, each of the inputs can be given
a user-assigned label. The label is an alphanumeric string with a maximum of 16 characters.
Hysteresis
The hysteresis setting provides a level of hysteresis between a threshold detection tripping and dropping
out. For instance, if the hysteresis is set for 5% and the threshold is set as an over threshold, once the
threshold detection trips, the measured value must drop to 95% of the threshold before the threshold
detection will drop out. This hysteresis helps prevent rapid or repeated transitions between trip and
dropout in cases where the measured input is nearly equal to a level equal to the threshold.
If the threshold is set as an under threshold with 5% hysteresis, once the threshold detection trips, the
measured value must rise to 105% of the threshold before the threshold detection will drop out.
Arming Delay
A user-adjustable arming delay disables remote thermocouple input protection during engine startup. If
the arming delay is set to zero (0), the input protection is active at all times, including when the engine is
not running. If the arming delay is set to a non-zero value, the input protection is inactive when the engine