IM 12D08N04-01E
5-5
5. Parameter Setting
5-2. Commissioning mode
5-2-1. Introduction
In order to obtain peak performance from the EXA SC402, you must set it up for each
custom application.
Setpoints
Alarms are set by default
S1 - high process alarm
S2 - low process alarm
S3 - not activated
S4 - Fail
The setpoints are at arbitrary default value. Therefore, you must set
these to meaningful values, or set them to off. (See service codes 40 to
49 and user interface codes 50 to 59.)
Output ranges
mA output 1 is set as default to 0-1 mS/cm or 0-19.99 M
Ω
.cm.
For enhanced resolution in more stable measuring processes, it may be
desirable to select 5-10
µ
S/cm range, for example, and maybe 0-25
°
C
temperature range.
Service codes 30 to 39 can be used to choose other output parameters
on mA output 2. Choose from Table, temperature or PI control.
Hold
The EXA SC402G converter has the ability to “HOLD” the output
during maintenance periods. This parameter should be set up to hold
the last measured value, or a fixed value to suit the process.
Note:
Even though HOLD is activated, if Auto Return is enabled (factory
default setting) and no keystroke is made for 10 min, HOLD will be
released.
Service
This selection provides access to the service menu.
What follows are pictorial descriptions of typical frontplate pushbutton sequences for
each parameter setting function. By following the simple YES/NO prompts and arrow
keys, users can navigate through the process of setting range, setpoints, hold and service
functions.
