ECM NH3 5250, Instruction Manual, Page: 18 / 62

14
MOd (Module) Setup Option
In MOd setup, the serial number of the NH
3
module assigned to the upper or lower channel is
entered. The serial number is written on a label on the module (see Figure B1). The module
assigned to the upper channel will send information to the upper display and the analog
outputs 1, 2, and 3. The module assigned to the lower channel will send information to the
lower display and the analog outputs 4, 5, and 6. The same module can be assigned to both
channels.
After entering MOd (i.e. press ENT when “MOd” is displayed), the serial numbers of the
available modules on the EIB will displayed. Select using

and

followed by the ENT key.
RATE Setup Option
Different display update rates can be assigned to the upper and lower displays. The selected
display update rate does not affect the analog output update rate or the CAN transmission
rate.
AOUT (Analog Output) Setup Option (A1 to A6)
The display head has six programmable analog outputs. Each output can be programmed as
0 to 5V or 0 to 1V. The analog outputs are updated every 5 ms based on information sent to
it by a NH
3
module every 5 ms. 5 ms is the maximum rate and is not programmable. The
module averages the data before it is sent at this 5 ms rate. There is programmable averaging
filter for NH
3
and one for pressure. See CAL Setup Option (AVG Suboption) for more
information.
Parameter information from the module assigned to the upper channel can be sent to analog
outputs 1, 2, and 3. Parameter information from the module assigned to the lower channel
can be sent to analog outputs 4, 5, and 6.
The parameter selected to drive an analog output can be anything from Table 2.
Here is an example of setting the analog output 2 (i.e. A2):
1. Press the SYS key until “MOd” is displayed.
2. Press the

key until “AOUT” is on the top display. Then press the ENT key.
3. Press the

key until “A2” (analog output 2) is on the display. Then press the ENT
key.
4. Press the

and

keys until the parameter (see Table 2) that will drive A2 is
displayed. Then press the ENT key.
5. Press the

and

keys to select 0V to 5V or 0V to 1V output. Then press the ENT
key.
6. When 0V is displayed, press ENT. Using the

,

, and ENT keys, set the parameter
value that you want to result in an analog output voltage of 0V on analog output 2.
The first time you do this, it may be a little tricky. You are setting one digit at a time
and for some numbers, the display will shift to the left so you can set the right-most
digits. If you get into trouble when programming, press the SYS key twice to exit
and re-enter setup to try again.
7. When 5V (or 1V) is displayed, press ENT. Using the

,

, and ENT keys, set the
parameter value that you want to result in an analog output voltage of 5V (or 1V) on
analog output 2.