Configuring Analog Inputs E2E Setup and Overview • 29
MIN EU
In the MIN EU field, enter the engineering unit value that
will correspond to the sensor signal voltage value entered
in the MIN SIGNAL field.
MAX EU
In the MAX EU field, enter the engineering unit value that
will correspond to the sensor signal voltage value entered
in the MAX SIGNAL field.
OFFSET
The offset modifies the value of the sensor by adding or
subtracting a specific amount, enter a negative value to
subtract from the sensors value and positive number to add
to it. The offset is typically used to calibrate sensors that
are reading slightly too high or too low.
4.2.2 Configuring a Linear Analog
Input
Configuring a Linear input is very similar to configuring a
custom pressure transducer. Refer the custom pressure
transducer section for initial setup. Only two additional
parameters need to be defined, LINEAR TYP and
LINEAR EU. The sensor’s input signal will be scaled
linearly with MIN SIGNAL corresponding to the MIN
EU value and MAX SIGNAL corresponding to the MAX
EU value.
LINEAR TYP
Select the signal type for the linear sensor in this field.
The options are: 2-20mA, 4-20mA, 0-10 VDC, 0-1 VDC
or 0-5 VDC.
LINEAR EU
Select the Engineering Units of the sensor value here.
4.2.3 Configuring Analog Input
Alarms
The E2E supports alarming for the I/O Module analog
inputs. When a sensor is configured and in alarm, the I/O
Module will communicate to E2E that there is a sensor
error present. When the input setup is set to Linear and the
signal voltage is set to 0-1, 0-5, or 0-10 the I/O Module
can only detect open sensors for sensors that have a
minimum signal level of 200 millivolts DC or higher.
Example: If a sensor outputs 0VDC as a valid signal level
and 0 is set for the MIN SIGNAL parameter, then the
I/O Module will not report open sensor alarms for this
because the minimum signal is below 200 millivolts DC.
To configure analog input alarms:
1. Login to E2E with username: user and password:
pass.
2. Press
+ keys at the same time to navigate
to the Network Summary screen.
3. Highlight the I/O Module device and press
(SETUP), press + at the same time
to select the MORE tab. Select option G Alarm
by pressing G on the E2E keyboard.
4. Three (3) fields per analog input will be shown:
AI0X In Alarm, AL_Type, AL_Prio.
AI0X In Alarm
This is the value of the analog input alarm signal; the
value will be “..” under normal conditions and ALARM
when the sensor is configured and in error.
AL_Type
This field selects the type of entry that will be recorded in
the E2E advisory log. None-no entry will be made to the
E2E advisory log.
Figure 4-16 - E2E- Additional Tabs
Figure 4-17 - E2E- Analog Input Alarms
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