Basler Electric DECS-250N - Manual (Page 346)

330 9440500990 Rev D
Analog Expansion Module DECS-250N
damaged RTD input wire. When enabled, Stop Mode Inhibit E turns off RTD input protection when
excitation is stopped.
Each RTD input can be independently configured for over or under mode F to annunciate an alarm when
the RTD input signal falls beyond the threshold G . Alarms are configured on the Alarm Configuration,
Alarms screen in BESTCOMSPlus. A user-adjustable activation delay H setting delays alarm annunciation
after the threshold has been exceeded.
The remote RTD inputs are incorporated into a BESTlogicPlus programmable logic scheme by selecting
them from the I/O group in BESTlogicPlus. For more details, refer to the BESTlogicPlus chapter.
BESTCOMSPlus settings for remote RTD inputs are illustrated in Figure 178. Remote RTD Input #1 is
shown.
Figure 178. Remote RTD Input Settings
A Label Text: An alphanumeric character string with a maximum of 64 characters.
B Hysteresis: Adjustable from 0 to 100% in 0.1% increments.
C RTD Type: 100 Ohm Platinum or 10 Ohm Copper.
D Arming Delay: Adjustable from 0 to 300 s in 1 s increments.
E Stop Mode Inhibit: Yes or No.
F Mode: Disabled, Over, or Under.
G Threshold:
–58 to +482°F in 1°F increments.
H Activation Delay: Adjustable from 0 to 300 s in 1 s increments.
Thermocouple Inputs
BESTCOMSPlus Navigation Path: Settings, Programmable Inputs, Remote Thermocouple Inputs
HMI Navigation Path: Settings, Programmable Inputs, Remote Thermocouple Inputs
The AEM-2020 provides two thermocouple inputs. The thermocouple inputs are always monitored and
their status is displayed on the appropriate metering screens. To make identifying the thermocouple
inputs easier, a user-assigned name
A can be given to each input.
Select the amount of hysteresis B needed to prevent rapid switching of the alarm. A user-adjustable arming
delay C allows configuration of the thermocouple input threshold monitoring in one of two ways. (1) When
the arming delay is set to zero, threshold monitoring is performed all the time, whether or not excitation is
enabled. (2) When the arming delay is set to a non-zero value, threshold monitoring begins when the
arming delay time has expired after system startup is complete. An out-of-range alarm, configured on the
Alarm Configuration, Alarms screen in BESTCOMSPlus, alerts the user of an open or damaged
thermocouple input wire. When enabled, Stop Mode Inhibit
D turns off thermocouple input protection when
excitation is stopped.