Emerson MRLDS - Manual (Page 19)

Controller Setup for Modbus MRLDS MRLDS Modbus Version (809-101x) • 13
field to change the name, and press the down
or right arrow to move to the (sensor) Type
field. Use the “.” and “—” keys to scroll
through the options and select IRLDS. (The
Gain and Offset parameters are automatically
configured for you.)
13. Use the arrow keys to move off the active
fields and press 0 (zero) twice to go back to
the main screen.
4.4.5 BEC and RMCC Controllers
Less Than Version 2.1
4.4.5.1 Input Definitions
Locate the screens in the BEC or RMCC that are used
to define input board and points. This is usually achieved
by pressing 7 then 1 from the Main Menu. Press the
DOWN ARROW key several times until the SENS01-
SENS08 inputs are shown.
The 16AI connected to the IRLDS’s output terminals
must be set up in the REFLECS’s system software. If the
16AI was given a unique board number by setting the dip
switch S3, and wired to the terminals so that each zone
number corresponds to a 16AI point number (zone 01 con-
nected to point 01, for example), these board and point ad-
dresses must now be entered into the REFLECS.
The screen above shows how the board and point ad-
dresses for zone 1 would be set up for a 16AI board num-
bered 1. Both SENS01 and SENS02 are set up as 01:01 so
that SENS01 can monitor concentration and SENS02 can
monitor fault status.
Set up the remaining sensors using the instructions giv-
en above. For each point on the 16AI, set up two sensors
with the same addresses.
4.4.5.2 Sensor Setup
Locate the screen in the BEC or RMCC where sensors
are set up. This is usually a menu option in the Sensors
Menu, which may be reached from the Main Menu.
The 0-4.8V signal is a linear signal representing a mea-
sured concentration of 0-1200 ppm, and a voltage of 5.0V
indicates a fault. In order for the REFLECS to read these
voltages correctly, the REFLECS sensor inputs must be
configured as linear sensors.
Name
A name for the sensor input may be entered in the Name
field. Since each IRLDS zone is set up with two REFLECS
sensor inputs, choose names for each input that distinguish
the input’s function. For example, the sensor input set up to
read leak concentrations on zone 1 should have a name like
REFR LK ZN 01, and the input set up to monitor fault sta-
tus should have a name like FAULT ZN 01.
Type
All sensor inputs connected to an IRLDS should be set
up as linear sensors. Enter (L)inear in the Type field.
Logging Interval
The logging interval is the amount of time between log
entries in the REFLECS’s Data Log.
When choosing a logging interval, keep in mind the
amount of time it takes an IRLDS to go through an entire
cycle of samplings. For example, a 16-valve IRLDS with
30 second sampling times for each zone takes a total of
eight minutes to sample all zones. Choosing a logging in-
terval smaller than the IRLDS’s cycle time will simply
clutter the REFLECS data log with multiple copies of the
same sample.
4.4.5.3 Sensor Setpoints
Locate the screen in the BEC or RMCC where sensor
set points are specified. This is usually a menu option in the
Sensors Menu, which may be reached from the Main
Menu.
After the linear sensors have been set up, the REFLECS
must be told how to interpret the linear voltage given by the
IRLDS.
Eng. Unit
The REFLECS does not require any specific engineer-
ing unit to be specified for sensor values. However, for eas-
ier reading of status screens and data logs, “PPM” should
be entered for sensor inputs that read concentration, and
SENSOR SETUP 12:00
#:01 Status:OFF Name:REFR LK ZN 01
Type: Linear
(T)mp (1)00 (5)00 (R)fLeak (K)Watt
(H)um (2)00 (D)ig (L)inear L(Q)Lev
(6)450 Tmp Dew(P)nt
Logging Interval (HH:MM:SS): 00:03:00
=PREV =NEXT ->=SET-DATA 0=MENU
SENSOR SETPOINTS LINEAR INPUT 12:00
#:01 Status:OFF Name:REFR LK ZN 01
Stay ON for:000 min Eng.Unit:PPM
Using Diff Of 01 00 00 00
0 Of 0 0 0 0
Gain 250 Offset 00000 mv
ON: 0 Dly: 0000 OFF:0 Dly:0000
=PREV =NEXT ->=SET-DATA 0=MENU