U
SER MANUAL
–
ENERIUM
100/200/300
MS1-7352 ENERIUM100/200/300_ Ed04 User Manual
Page 23 / 86
6.5 Card option - 2 analog inputs
6.5.1 Preamble
This card has two independent analog inputs.
The quantity assigned to the analog input is the called "primary view". The minimum and maximum
values of this quantity can be set between -2
31
and +2
31
, with a resolution of one hundredth.
The unit of this quantity is a parameterised string of up to eight characters.
The value of the "secondary view" analog input is measured by the monitor at a frequency of 1000
Hz,
and then integrated over a second. This measurement is then converted into a "primary view" value,
according to a simple linear law that is always positive. This may be exceeded by 10%.
A 32-character label can be associated with each analog input. This measurement is stored in the
Modbus memory field.
The details of the management of each of the two analog inputs is defined in document MSO-7423 -
Mapping and control words, available from the Enerium website at (http://www.enerium.enerdis.com).
6.5.2 Characteristics
Item
Characteristics
Number of inputs
2
Input impedance
50
Ω
Permanent overcurrent
2.5 times In, i.e. 50 mA over 24 hours
Transient overcurrent
50 times In, i.e. 1 A for 1s repeated 5 times every 300s
Power absorbed
<50 mW
Limits (min and max)
0 mA
≤
I
sortie
≤
+ 22 mA
6.5.3 Connection
Connect the load and the connecting cable as follows:
Analog input connections
Card output
Terminal
Function
AI1
1
Cold analog input AI1
AI1
2
Hot analog input AI1
AI2
3
Cold analog input AI2
AI2
4
Hot analog input AI2
