Create ROC-2313 - User Manual

1
ROC-2313 Reverse Osmosis Controller
1 General
The instrument is a combined control instrument of a reverse osmosis controller and an on-line
conductivity instrument. It can perform the operation test, status control and on-line monitoring of water
quality conductivity (combining PLC controller and conductivity meter). It takes multiple anti-interference
measures, adopts unique process flow and graphical control panel with LED indicator lamp embedded, the
interface is friendly; menu-driven operation is used, multiple groups of parameters can be set and modified,
the requirements of automatic operation are met.
2 Process Flow Selections
There are two typical operation modes for RO system (as shown in Fig.1A and B). This instrument
can operate in both modes in A and B.
3 Functions and Main Technical Specifications
Low feed protection:
In case of raw water supply break-off, the “LOW FEED PRESS” lamp will be lightened, the
nixie tube will display “ALA” and the buzzer will give an alarm, the controller will shut down the
whole RO system. After that, the controller will keep detecting the low feed switch. When the water
supply is resumed, the system will be restarted.
Low pressure protection:
In case of low pressure, the “LOW PRESS” lamp will be lightened, the nixie tube will display
“ALA” and the buzzer will give an alarm, the controller will shut down the whole RO system and try
to start up for the first time after 1 minute. If the water pressure is normal, the water producing
process will be resumed. If the start-up fails for three times, the system will come into a dead-lock
status. Press the ECS key(external control switch) or the reset key to exit and then restart.
High pressure protection:
In case of high pressure over limit, the “HIGH PRESS” lamp will be lightened, the nixie tube
will display “ALA” and the buzzer will give an alarm, the controller will shut down the whole RO
Flush vale
Flush valve
Level of raw
water
Raw
water
tank
Waste outlet
Low
press
pump
Pre-
processing 1
Pre-processing 2
Pre-processing 3
Direct drain valve
Safety
filtering
Low press protection
Inlet valve
High
press
pump
High press protection
RO
membrane
Pure
water
tank
Fig. 1
-
A First level RO process flow with raw water tank
Fig. 1
-
B First level RO process flow with direct water supply
Safety
filtering
Low press
protection
High press protection
High
press
pump
RO
membrane
Flush valve
Pure
water
tank
Inlet valve
Tap water
Low
press
pump
Waste outlet
Low feed
protection
Pre-processing 1
Pre-processing 2
Pre-processing 3
Direct drain valve
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Summary

Functions and Main Technical Specifications

Low Feed Protection

In case of raw water supply break-off, the controller shuts down the system and monitors the feed switch.

Low Pressure Protection

Shuts down system on low pressure, attempts restart. Fails after 3 attempts trigger dead-lock status.

High Pressure Protection

Shuts down system on high pressure, waits for elimination, then attempts restart. Fails trigger dead-lock.

Conductivity Over Limit Alarm

System alarms, control relay switches on when conductivity exceeds limit, turning on by-pass valve.

Front Panel Illustration

Part I: Indicator Lamps and Display Area

Explains 4 LED status lamps (POWER, HIGH) and conductivity/temperature display.

Part II: RO System Operation Status Indicators

Details 9 LED indicator lamps for system operation status like LOW FEED PRESS, LOW PRESS, HIGH PRESS.

Part III: Setting and Operation Keys

Defines the function of SET, directional (▲), and C/T keys for parameter setting and saving.

Rear Panel Illustration

Left-side Terminals

Defines output control terminals (high pressure pump, low pressure pump, inlet/flush valves) and common/power terminals.

Right-side Terminals

Defines input terminals for water level, pressure switches, external control, and reset.

Middle Terminals for Electrode

Details the input wires (green, red, white, yellow) for connecting the conductance electrode.

Operation Method

Electrode Constant Setting

Explains the electrode constant parameter, set by manufacturer, and its modification.

Conductivity Limit Value Setting

Defines the conductivity limit value parameter, its default setting, and operation limit.

Flush Time Settings

Covers flush time at start-up and at water level, with default values and ranges.

Flush Interval Setting

Describes the parameter for setting the interval (in hours) between membrane flushes.

Connection for Automatic Reverse Flushing

Relay J1 Function

Explains the function and connection of Relay J1 for reverse flushing, controlled by pretreatment timer.

Measurement Electrode (CELL) Installation

Maintenance

Conductance Cell Maintenance

Details cleaning procedures for the conductance cell and electrode, including acid soak.

Measurement Cable Handling

Emphasizes the special nature of the measurement cable and avoiding changes or unauthorized lengthening.

Troubleshooting

Create ROC-2313 Specifications

General

Output Voltage	24V DC
Number of Inputs	8
Number of Outputs	8
Communication Interface	RS-485
Input Voltage	24 VDC nominal (18-30 VDC)