Hach-lange SC 200 Active 4-20 mA Output Module User Manual Manual do Utilizador descarregar pdf (Página 8)

Operation

Configure a 4-20 mA output module

The

Network Setup option appears in the Settings Menu only if an analog

output module or other network module such as Modbus or Profibus is

installed in the controller.

Outputs for analog output modules are set at 4-20 mA. Outputs can be

assigned to represent a measured parameter such as pH, temperature,

flow or calculated values.

1. From the Settings menu, select Network Setup.

2. Select Edit Name and enter a name for the module. Push ENTER to

save the name.

3. Select an output (A, B, C) and push ENTER.

a. Highlight an option and push ENTER.

b. Make a selection from the list or update the entries.

c. Push ENTER to save the changes.

Option Description

Select Source Selects the output to configure—None, sensor 1 name,

sensor 2 name, calculation (if set up). For sensor output,

Select Parameter sets the measurement options. When the

measurement is autorange, Set Range sets the range.

Set Low Value Sets the 4 mA value (default: 0.000). (Range and units

depend on sensor)

Set High Value Sets the 20 mA value (default: 1.000). (Range and units

depend on sensor)

Set Transfer Sets the transfer value. Range 3.0 to 23.0 mA (default

4.000).

Set Filter Sets a time-average filter value of 0 (default) to 120 seconds.

Diagnostics and tests menu

1. From the Settings menu, select Diagnostics and Tests.

2. Select an option and push ENTER

to perform the function or view the

data.

Option Description

Output Cal Calibrates the low (4 mA) and high (20 mA) values for

each of the three 4-20 mA outputs (A, B, C).

Hold output Sets the hold output options to Hold, Transfer or

Release for each of the three 4-20 mA outputs (A, B,

C).

Test output Drives selected output to a known value.

Status Displays the output value.

Error hold mode Selects what to do on error condition.

Module information Displays information about the installed module.

•

Software version

• Bootloader version

• Serial Number

Default Setup Sets the configuration to factory defaults.

Modbus registers

A list of Modbus registers is available for network communication. Refer

to www.hach.com or www.hach-lange.com for more information.

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