Icon Process Controls ProCon C400 Series User manual

C400 Series Controller
Conductivity |TDS |Resistivity |Salinity
Operating Manual

C400 Series Operating Manual
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Contents
Preface .........................................................................................................................................................................................................................................3
Features...........................................................................................................................................................................................................................................3
Technical Specications ...................................................................................................................................................................................................... 4
Typical Application.................................................................................................................................................................................................................. 4
Instrument Connection........................................................................................................................................................................................................5
Dimension......................................................................................................................................................................................................................................5
Instrument Installation .........................................................................................................................................................................................................6
Display Descriptions ...............................................................................................................................................................................................................7
Keypad Descriptions...............................................................................................................................................................................................................7
Menu Structure ..........................................................................................................................................................................................................................8
Calibration....................................................................................................................................................................................................................................10
Field Calibration........................................................................................................................................................................................................................11
Measurement Settings (Quick Start).........................................................................................................................................................................12
Temperature Calibration....................................................................................................................................................................................................13
Point Calibration......................................................................................................................................................................................................................14
Field Calibration.......................................................................................................................................................................................................................15
Relays ..............................................................................................................................................................................................................................................16
4-20mA Ouput..........................................................................................................................................................................................................................17
RS485 Modbus..........................................................................................................................................................................................................................18
System Setup.............................................................................................................................................................................................................................19
MODBUS RTU General Information..........................................................................................................................................................................20
MODBUS RTU Transmission Mode.............................................................................................................................................................................21
MODBUS RTU CRC Check ...............................................................................................................................................................................................22
Implementation of MODBUS RTU in Instrument .......................................................................................................................................... 22
Data Format...............................................................................................................................................................................................................................24
Read Instruction Mode ......................................................................................................................................................................................................26
Daily Maintenance ................................................................................................................................................................................................................26
Troubleshooting......................................................................................................................................................................................................................27
Warranty.......................................................................................................................................................................................................................................27

C400 Series Operating Manual
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Preface
Please read this manual carefully before use.
When receiving the instrument, please open the package carefully, check whether the instrument and accessories are damaged by trans-
portation and whether the accessories are complete. If any abnormalities are found, please contact our after-sales service department or
regional customer service center, and keep the package for return processing.
This instrument is an analytical measurement and control instrument with highly precision.Only skilled,trained or authorized person should
carry out installation, setup and operation of the instrument.Ensure that the power cable is physically separated from the power supply
when connection or repair. Once the safety problem occurs, make sure that the power to the instrument is off and disconnected.
For example,
1. Apparent damage to the analyzer
2. The analyzer does not work properly or provides specied measurements
3. The analyzer has been stored for a long time in an environment where the temperature exceeds 70°C
The analyzer must be installed by licensed professionals in accordance with relevant local specications, and instructions are included in
the operation manual. Comply with the technical specications and input requirements of the controller.
Features
The instrument is equipped with different types of pH or ORP sensors. Widely used in power plants, petrochemical industry, metallurgical
electronics, mining, paper industry, biological fermentation engineering, medicine, food and beverage, environmental protection water
treatment, aquaculture, modern agricultural planting and other industries. The pH (acidity and alkalinity) value, ORP (redox potential) value
and temperature value of water solution were continuously monitored and controlled.
Large color LCD display
Intelligent menu operation
Multiple automatic calibration
Manual and automatic temperature compensation
Three (3) relay control switches
High & low alarm and hysteresis control
4-20mA (2-wire), 4-20mA (4-wire direct to controller), or 4-20mA + RS485
Multi parameter display simultaneously shows – pH, ORP, Conductivity, Temp
Password protection

C400 Series Operating Manual
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Technical Specifications
Measuring Range 0 – 500µS/cm
Resolution 0.1µS/cm |0.01mS/cm
Intrinsic Error ±0.5% F.S
Resistivity 0 – 18.25MΩ/cm
Resolution 0.01KΩ/cm | 0.01MΩ/cm
TDS 0 – 250g/L
Resolution 0.01mg/L |0.01g/L
Salinity 0 – 700ppt
Resolution 0.01ppm |0.01ppt
Working Temperature 32 – 302°F | 0 – 150°C
Temperature Compensation Automatic or Manual
Output Two 4–20mA |20–4mA |0–20mA
Communication RS485 MODBUS RTU
Relay Control Contact 5A 240VAC |5A – 28VDC
Power Supply 9 – 36VDC (std) |85 – 265VAC | Power Consumption 3W
Environmental Temperature 14 – 140°F | -10 – 60°C
Relative Humidity ≤ 90%
Waterproof Rating IP65
Weight 0.5kg
Dimensions 98 × 98 × 130mm
Installation Opening Size 93 X 93mm
Installation methods Panel |Pipe |Wall
Typical Application

C400 Series Operating Manual
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Instrument Connection
CELL 1 NO 1
CELL 2 COM 1
CELL 3 NC 1
CELL 4 NO 2
Temp COM 2
Temp NC 2
N/C COND
N/C
N/C Pow DC+
(9–36V)
Cur 1+ Pow DC-
Com - Pow PE
Cur 2+
RS-485 B
RS-485 A
Pow ACL
(9–36V)
Pow AC N
Pow PE
Tip: If the user needs to lengthen or
shorten the cable, please remove the black
conductive skin outside the transparent
wire to prevent short circuit between the
black conductive skin and the reference
end of the electrode. Multimeter can be
used to check.
Terminal Function Terminal Function
CELL 1 Conductivity Sensor Input 1 NO 1 High set relay working position
CELL 2 Conductivity Sensor Input 2 COM 1 Alarm relay common
CELL 3 Conductivity Sensor Input 3 NC 1 High set relay resting position
CELL 4 Conductivity Sensor Input 4 NO 2 Low set relay working position
Temp Temperature sensor Input COM 2 Alarm relay common
Temp Temperature sensor Input NC 2 Low set relay resting position
N/C No Connection
N/C No Connection Pow DC + DC power + (9 – 36V)
N/C No Connection Pow DC - DC power -
Cur 1 + Current output 1+ Pow PE Earth wire
Com - Current output common
Cur 2 + Current output 2+ Pow ACL (85 – 265V) Live wire
RS485 B Communication Terminal Pow AC N Neutral wire
RS485 A Communication Terminal Pow PE Earth wire
Dimension

C400 Series Operating Manual
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Instrument Installation
93 mm (± 0.5 mm)
93 mm (± 0.5 mm)
Control Panel Installation
Wall Mounting
53 mm
18.4 mm
5mm
Fixture Dimension
Fixed bracket (M4 screw) is
installed on the wall first.
Insert the instrument into the
fixture along the chute
a.
b.
Insert into the fixture along the chuteInstall bracket on the wall first
Installation of back
cover with
waterproofing seal

C400 Series Operating Manual
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Display Descriptions
Check all pipe connections and electrical connections
before use. The instrument will display as shown in the
gure below after the power is turned on.
Conductivity / TDS / Salinity / Resistivity
83.01µS/cm
25.01000Ω°C
C1 14.51 mA
SP1 SP2
Main measurment + Unit
Relay 1
[blue is off and red is on]
Instrument type
Temp. + Unit
Automatic temp. comp.
Relay 2 Current 1
Current 2
Sensor Communication
Warning
Conductivity / TDS / Salinity / Resistivity
83.01µS/cm
25.0 °C
C1 14.51 mA
SP1 SP2
Measurement Mode
Conductivity / TDS / Salinity / Resistivity
Calibration Mode
Voltage: Point 1
0µS/cm Done
-5 mV
Configure
Calibration
Set Points
Output
System
Conductivity / TDS / Salinity / Resistivity
Programming Mode
Keypad Descriptions
MENU
ESC
Confirm Options
Press to move menu left
Enter menu programming menu
Return to previous menu
Long press to return the
measurements screen
Menu setting mode: press this key
to loop down the menu options
Value input mode: current mA / loop
In measurement mode, long press
to set parameters for browsing

C400 Series Operating Manual
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Menu Structure
Press [MENU] key to enter programming mode:
If the monitor prompts you to enter the calibration security password, press the or key to set the calibration security password, and
then press the [ENT] key to conrm the calibration security password. No initial password here, please enter directly by pressing the
[ENT] key.
Item Display Selection Sub Menu
Congure
Sensor
Type
EC
TDS
Salinity
Resistivity
Unit
µS/cm
mS/cm
ppm
ppt
%
Electrode Constant 1.0 (Default, can be modied)
Temperature Coefcient 2.0 (Default, can be modied)
Temperature
Temperature Sensor
NTC2.252 kΩ
NTC10 kΩ
Pt100
Pt1000 (Default)
Temperature Offset 0.0000 (Enter Value if Required)
Temperature Input
Automatic
Manual
Temperature Unit
°C
°F (Default)
Calibration
Standard
Solution
Calibration
Calibration Point 1 0.01 μS/cm/cm (Default, can be modied)
Calibration Point 2 1413mS/cm (Default, can be modied)
Calibration Point 3 12.88mS/cm (Default, can be modied)
Calibration Point 4 111mS/cm (Default, can be modied)
Calibration Point 5 800 mS/cm (Default, can be modied)
Calibration Adjustment
Voltage 1 (Default: 00.010)
Voltage 2 (Default: 1413)
Voltage 3 (Default: 012880)
Voltage 4 (Default: 149812)
Voltage 5 (Default: 800000)
Field Calibration
Field Calibration 00.010 (Default)
Offset Adjustment 00.000 (Default)
Slope Adjustment 01.000 (Default)

C400 Series Operating Manual
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Item Display Selection Sub Menu
Alarm
Relay 1
Status ON
OFF
High/Low Setpoint
High Alarm
Low Alarm
Clean
Limit Value 00.00 (Default, can be modied)
Hysteresis 00.000 (Default, can be modied)
Relay 2
Status ON
OFF
High/Low Setpoint
High Alarm
Low Alarm
Clean
Limit Value 00.00 (Default, can be modied)
Hysteresis 00.000 (Default, can be modied)
Output
Current 1
Channel Main
Temperature
Output Option
4-20mA (Default)
0-20mA
20-4mA
Upper Limit 00.00
Lower Limit 00.00
Current 2
Channel Main
Temperature
Output Option
4-20mA (Default)
0-20mA
20-4mA
Upper Limit 00.00
Lower Limit 00.00
Output RS485
Baud Rate
4800BPS
9600BPS (Default)
19200BPS
Parity Check
None
Odd
Even
Stop Bit 1 Bit
2 BIT
Network Node 000001
System
Language English
Date/Time Year-Month-Day Current Date (Default)
Hour-Minute-Second EST (Default)
Display
Display Speed
Low
Standard (Default)
Medium
High
Backlight Power Saving [Enter Value]
Long Bright
Information
Soft Version 19-1.0
Password Settings 0000
Serial Number
Factory Default No Keep User Settings
Yes Reset back to Factory Default

C400 Series Operating Manual
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Item Display Selection Sub Menu
System
Terminal Current
Tuning
Current 1: 4mA (The positive and negative ends of the
multi-meter are connected to the current
1 or current 2 output terminals of the
instrument key respectively, press key
to adjust the current 4mA or 20mA , press
[ENT] to conrm.)
Current 1: 20mA
Current 2: 4mA
Current 2: 20mA
Relay Test
Relay 1 — Testing
Press [ENT] to test
Relay 2 — Testing
Calibration
Press [MENU] to enter the calibration menu and select
Calibration
Standard Calibration
Calibration Point 1 Enter given standard liquid value: Defa
Calibration Point 2 Enter given standard liquid value(Example:84μS/cm)
Calibration Point 3 Enter given standard liquid value(Example:1413μS/cm)
Calibration Point 4 Enter given standard liquid value(Example:12.88mS/cm)
Calibration Point 5 Enter given standard liquid value(Example:111mS/cm)
Field Calibration
Field Calibration Enter Value
Offset Adjustment Enter Value
Slope Adjustment Enter Value
Calibration of Standard Solution
The sensor has been factory calibrated before delivery and users can use it directly.
Note: Calibration if required can be made using at least one of the ve calibration points. Not all points are required
for sensor calibration
If calibration is required, prepare a suitable standard reference liquid with known range value. Press the [MENU] button to enter the
Setting Mode — select the calibration point.
Enter the corresponding reference calibration value, then press [ENT] key to conrm and enter the calibration screen.
(If the instrument has been calibrated, the screen shows the calibration status. press the key to switch the calibration state of the
calibration point. If re-calibration is required in this mode, press the [ENT] key again to enter the re-calibration.)
In the standard solution calibration mode, press the key to switch the calibration points, press the [ENT] key to start calibrating. If
prompted to enter the calibration security password, press the key or key to set the calibration security password, and then press the
[ENT] key to conrm the calibration security password.
Voltage: Point 1
0µS/cm Done
-5 mV
Conductivity / TDS / Salinity / Resistivity
Calibrating
Calibration Sensor Voltage
Successful Calibration

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Calibration point 1: After entering the calibration mode, the current measurement value will be displayed. This is known as the standard
solution value.
Place the electrode into the standard solution of the corresponding value, and the corresponding voltage mV value and calibration state
will be displayed on the screen.
After completion of calibration, Done will be displayed on the right side of the screen.
If you want to calibrate the next point, press the key to switch the calibration point.
If only one point calibration is required, press the [MENU] key to return to the superior menu after calibration.
During the calibration process, the calibration status will be displayed on the right side of the screen. Done indicates successful calibration,
Calibrating indicates in calibration, and Error indicates a sensor or a calibration issue.
Field Calibration — Select on-site calibration methods: [Linear calibration] , [Offset adjustment] , [linear adjustment].
Field Calibration
When the data from laboratory or portable instrument are input into this item, the instrument will automatically correct the data.
Conductivity / TDS / Salinity / Resistivity
pH / ORP
µS/cm: 07.00
Vol: -002
Temp: 25.0 °C
Slope: 00.984
Field Calibration
Calibrating Done
Offset adjustment
Compare the data of laboratory or portable instrument with the data of instrument measurement,if there are errors, the error data can be
modied by this function.
Linear adjustment
Linear values after “eld calibration” are stored in this item, with factory data of 1.00. The main value of the instrument displays the known
standard liquid value point.
Place the electrode into the standard solution of the corresponding value, and the corresponding voltage mV value and calibration state
will be displayed on the left side of the screen.
After completion of calibration, Done will be displayed on the right side of the screen. If the next point is calibrated, press to switch the
calibration point.
If only one point calibration is needed, after the calibration is completed, press [MENU] to exit. During the calibration process, when the
standard solution is wrong, the screen will show an Error.
No Conductivity Module Required
Relay
Alarm/Cleaning
Relay 1
Pump/Valve
Relay 2
Pump/Valve
Power
(100-230 VAC)
4-20mA 4-20mA + RS 485
Controller
Conductivity
Sensor
ENT
MENU
ESC
83.01
µS/cm
Conduc
tivit
y/ TDS / Resistiv
ity /
S
alinity
249mV 25.0 °C
SP
1SP
2
C1
14.51 mA
R
C400

C400 Series Operating Manual
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Measurement Settings (Quick Start)
Configure
Temp Constant
Unit
Type
Salinity
Resistivity
TDS
EC
PPM
PPT
%
ms/cm
µS
Sensor
MENU
ESC Press MENU key
0000
Enter Value
Electrode Constant
TDS
0000
Enter Value
Cell Constant
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
Press ENT key Press ENT key
Select [Configure]
Press key
Select [Sensor ]
Press key
Select
[Item]
Press
key
Units of Measurement
EC
EC
TDS
Salinity
Resistivity
µS
ms/cm
PPM
PPT
%
Select
[Item]
Press
key
Select
[Item]
Press
key
Select
[Item]
Press
key
Select [Type]
Press key
Press ENT key
Select [Unit]
Press key
Press ENT key
Select [Electrode Constant]
Press key
Press ENT key
Select [ Temp Constant]
Press key
Press ENT key

C400 Series Operating Manual
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Temperature Calibration
Temp Unit
Temp Offset
Temp Sensor
PT100
PT1000
NTC 10K
NTC2.252Sensor
Temp Input Auto
Manual
Temperature
0000
Enter Value
: Default
: Default
°C
°F
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
Configure
MENU
ESC Press MENU key
Press ENT key
Select [Configure]
Press key
Press ENT key
Select [Temperature]
Press key
Press ENT key
Select [Temperature]
Press key
Press ENT key
Select [ Temp Offset ]
Press key
Press ENT key
Select [ Temp Input]
Press key
Press ENT key
Select [ Temp Input]
Press key
Select
[Item]
Press
key
Select
[Item]
Press
key
Select
[Item]
Press
key
Select
[Item]
Press
key

C400 Series Operating Manual
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Point Calibration
Point 4
Point 2
Point 1Std Cal
Point 3
Calibration
Configure
MENU
ESC Press MENU key
Press ENT key
Select [ Calibration]
Press key
Press ENT key
Select [Std Cal]
Press key
Press ENT key
Select [Point 1]
Press key
MENU
ESC
0000
Enter Value
Press ENT key
for Save
Press
ESC key
for Back
Calibrating
Select Value
MENU
ESC
0000
Enter Value
Press ENT key
for Save
Press
ESC key
for Back
Calibrating
Select Value
MENU
ESC
0000
Enter Value
Press ENT key
for Save
Press
ESC key
for Back
Calibrating
Select Value
MENU
ESC
0000
Enter Value
Press ENT key
for Save
Press
ESC key
for Back
Calibrating
Select Value
Press ENT key
Select [Point 2]
Press key
Press ENT key
Select [Point 3]
Press key
Press ENT key
Select [Point 4]
Press key

C400 Series Operating Manual
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Field Calibration
Offset
Field Cal
Slope
Calibration
Configure Std Cal
Field Cal
MENU
ESC Press MENU key
Press ENT key
Select [ Calibration]
Press key
Press ENT key
Select [Temperature]
Press key
Press ENT key
Select [Field Cal]
Press key
Press ENT key
Select [Offset]
Press key
Press ENT key
Select [Slope]
Press key
MENU
ESC
0000
Enter Value
Press ENT key
for Save
Press
ESC key
for Back
Calibrating
Select Value
MENU
ESC
0000
Enter Value
Press ENT key
for Save
Press
ESC key
for Back
Calibrating
Select Value
MENU
ESC
0000
Enter Value
Press ENT key
for Save
Press
ESC key
for Back
Calibrating
Select Value

C400 Series Operating Manual
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Relays
Hysteresis
High Low Set
StatusRelay 1
Limit Value
Set points
Calibration
Configure
Relay 2 OFF
On
Low Alarm
High Alarm
or
0000
Enter Value
0000
Enter Value
MENU
ESC Press MENU key
Press ENT key
Select [Set Points]
Press key
Press ENT key
Select [Relay]
Press key
Press ENT key
Select [ Status]
Press key
Press ENT key
Select [ High Low Set]
Press key
Press ENT key
Select [ Limit Value]
Press key
Press ENT key
Select [ Hysteresis]
Press key
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
Select
[Item]
Press
key
Select
[Item]
Press
key
Select
[Item]
Press
key
Select
[Item]
Press
key

C400 Series Operating Manual
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4-20mA Ouput
Upper Limit
Output OptCurrent 1
Lower Limit
Set points
Output
Calibration
Configure
Current 2 0-20mA
20-4mA
4-20mA
0-20mA
or
20-4mA
MENU
ESC Press MENU key
Press ENT key
Select [Output]
Press key
Press ENT key
Select [Current]
Press key
Press ENT key
Select [ Output Opt]
Press key
Press ENT key
Select [ Upper Limit]
Press key
Press ENT key
Select [ Lower Limit]
Press key
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
Select
[Item]
Press
key

C400 Series Operating Manual
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RS485 Modbus
Parity Check
Baud RateCurrent 1
Set points
Output
Calibration
Configure
Current 2
RS485
9600 BPS
19200 BPS
4800 BPS
Odd
Even
None
Stop Bit
2 Bit
1 Bit
Network 0000
Press ENT key
Select [Output]
Press key
Press ENT key
Select [RS485]
Press key
Press ENT key
Select [ Baud Rate]
Press key
Press ENT key
Select [ Parity Check]
Press key
Press ENT key
Select [ Stop Bit]
Press key
Press ENT key
Select [ Network]
Press key
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
Select
[Item]
Press
key
Select
[Item]
Press
key
Select
[Item]
Press
key
Enter Value
Select Value
MENU
ESC Press MENU key

C400 Series Operating Manual
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System Setup
Set points
Output
History
System
Calibration
Configure
22:10:22
10:00:00
YY/MM/DD
hh/mm/ss
Soft Version
Password
Serial
Value
000000
Value
English
Std
Low
High
Med
Display Speed
LED
Always On
Energy Saving
Select [Item] Press key
Date/Time
Language
NO
YES
Factory Default
Display
Information
Press ENT key
Press ENT key
Select [System]
Press key
Press ENT key
Select [ Language]
Press key
Press ENT key
Select [ Date/Time]
Press key
Press ENT key
Select [ Item]
Press key
Press ENT key
Select [ Item]
Press key
Select [ Item]
Press key
Press ENT key
Select [ Display Speed]
Press key
Press ENT key
Select [ LED]
Press key
Press ENT key
Select [ Display]
Press key
Press ENT key
Select [ Information]
Press key
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
MENU
ESC
Press
ENT key
for Save
Press
ESC key
for Back
Select
[Item]
Press
key
MENU
ESC Press MENU key

C400 Series Operating Manual
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MODBUS RTU General Information
Overview
The hardware version number of this document is V2.0; the software version number is V5.9 and above. This document describes the
MODBUS RTU interface in details and the target object is a software programmer.
MODBUS Command Structure
Data format description in this document;
Binary display, sufx B, for example: 10001B
- decimal display, without any prex or sufx, for example: 256
Hexadecimal display, prex 0x, for example: 0x2A
ASCII character or ASCII string display, for example: “YL0114010022”
Command Structure
The MODBUS application protocol denes the Simple Protocol Data Unit (PDU), which is independent of the underlying communication
layer.
Figure 1: MODBUS Protocol Data Unit
MODBUS protocol mapping on a specic bus or network introduces additional elds of protocol data units. The client that initiates the
MODBUS exchange creates the MODBUS PDU, and then adds the domain to establish the correct communication PDU.
Figure2: MODBUS architecture for serial communication
On the MODBUS serial line, the address domain contains only the slave instrument address. Tips: The device address range is 1...247. Set
the device address of the slave in the address eld of the request frame sent by the host. When the slave instrument responds, it places its
instrument address in the address area of the response frame so that the master station knows which slave is responding. Function codes
indicate the type of operation performed by the server. CRC domain is the result of the “ redundancy check” calculation, which is executed
according to the information content.