for your sensor. The input configuration must be completed for each input that is in use.
Sensor Name:
change this to describe the input. This can be anything you wish, such as “Indoor Temperature”
Input Mode
: Select from one of the following: Voltage 0-10v, Current 4-20mA, Resistance, Pulse, Pulse-KYZ, status
or Unconfigured.
Sensor Make and Model
: This entry is a space for the model number of the sensor. It is only used for reference.
Sensor Minimum Range:
All Analog Sensors have min/max range values. For example, a temp sensor may have a
range of 50 to 95 degrees F. Enter the low range number here.
Sensor Maximum Range
: Enter the high range value of the analog sensor here.
Pulse Multiplier:
For pulse mode inputs, this option specifies the multiplier for the input.
Curve Scaling
: Some sensors such as thermistors have a non-linear output. This option allows a lookup table to be
specified to convert from the input reading to an engineering unit data output. Several conversion tables (Curve Scale
Templates) are provided with the Energy Monitoring Hub.
Pulse Rate
: For most units, this feature is an automatic rate field. For KWH points, the rate is KW.
Engineering Units:
Enter the units of measure. ie, Degrees F, %RH, etc.
5.
After saving the sensor profile, the device configuration page will be displayed again. The input values should now be
scaled correctly and the names will be updated to your new configuration. You may wish to set any alarm thresholds
required, or check the “console” check box for any data points that should be displayed on the LCD console.
6.
Click the “Advanced” button in the lower right corner of the page. For the A8812 onboard IO, there are several options.
I
nput types:
This list shows the status of the 8 analog inputs, either 0-10V, 4-20mA, resistance, pulse, status, etc.
The
Contact Closure Threshold
allows you to set a maximum resistance to be counted as a “closed” contact. This is
helpful when using intrinsic barrier devices.
The
Contact Open Threshold
can be used in conjunction with a 20K resistor in parallel with the contact closure. When
the contact is open, the Energy Monitoring Hub will read 20K, when closed, it will read <100ohms. If the wire is broken,
the reading will go above 20k ohms, and will cause an alarm condition.
The
Pulse count for instantaneous rate
value specifies the number of pulses to use to calculate the instantaneous rate,
min, and max fields in pulse mode.
7.
After returning to the device configuration page, click “Save” at the bottom of the page to return to the device display
page.
The internal I/O device 250 is also available to the Modbus TCP gateway feature. External systems such as computer
software or PLC may send a Modbus TCP query to the Energy Monitoring Hub using Modbus address 250. The internal
I/O device will respond with Modbus registers that represent all of the features seen in the Energy Monitoring Hub
configuration pages.
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1.800.561.8187
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.ca