13
Please note that these operating screens cannot
be seen except with the cabinet door open and the
instrument in maintenance bypass mode. See section
5.3 for more information.
If changes to the configuration have to be performed, you will need to
enter the maintenance bypass mode see section 5.3 for more information.
The instrument has been designed to provide the ability to customize the
instrument according to needs at any time during normal operation. This
mode has been split into sub-menus to facilitate instrument configuration.
This section describes how to use each of the sub-menus to configure the
instrument. While in the configuration mode, the instrument has a time-out
feature that automatically returns the system operation to the
AUTO
mode
after a fifteen (15) minute period of no button pushes.
Enter the
CONFIG
mode of the instrument by pressing the
MODE/
EXIT
button until the arrow beside
CONFIG
is illuminated, then press
the
button to scroll through the sub-menus.
8.1 Setting the 4-20 mA Output
The first configuration selection is
4-20
for the 4-20 mA
output. Select the either
On
or
OFF
using the
and
buttons. Once the desired output has been set, press the
button to accept it. The next prompts will depend on the
output selected. Also see sections 8.12 and 8.13.
If the 4-20 mA output was turned
On
, prompts to set the 4mA
(4MA)
and 20mA
(20MA)
chlorine limits will be displayed. There will also be
a menu to adjust the error level (ERLV). The first prompt will be the
chlorine limit assigned to the 4 mA output level:
Select the chlorine level to assign to the
4MA
using the
and
buttons.
Once the desired level has been set, press the
and
button to accept it.
NOTICE
To exit the CONFIG mode, press the MODE/EXIT button any
changes that were made will be saved.
NOTICE
The 4MA can be set higher than 20MA level to invert the output
current if required. This may be required to control a dosing pump.
The next prompt will be the chlorine level assigned to the 20MA. Select
the chlorine level using the
and
buttons. Once the desired level
has been set, press the
button to accept it.
8.2 Configuring the Error Level
In case of an error in the CLX-Ex, the 4-20 mA reading can be used to indicate
a problem by sending the current to either 4.00 mA, 2.00 mA or 0 mA. The
factory default setting is OFF. Select the desired ERLV by using the
and
buttons then press the
button to accept the desired error response.
8.3 Configuring the RS–485 Port
The instrument is equipped with an RS 485 port which operates in
Simple bus or Modbus. Prompts will appear for setting the baud rate,
the address and the Modbus transmission mode (RTU or ASCII).
Select the correct baud rate (1200, 2400, 4800, 9600, or 19200) for
operation of the I/O port by pressing the
or
buttons to change the
displayed baud rate.
Press the
button to continue on and select the desired instrument
address using the
or
buttons. Once the selection is satisfactory,
press the
button.
To use the Modbus mode, select
ASCII
or
RTU
. See
section 9.1.2.
8.0 Instrument Configuration
(CONFIG mode)
Only access when the atmosphere has been tested and known to
be safe.
WARNING
!
