Pulsafeeder MicroVision

Questions and Answers

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Phillip BergAug 19, 2025
Why does my Pulsafeeder Controller display a “No Flow” alarm message?
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  Bradley EscobarAug 19, 2025
  The "No Flow" alarm on your Pulsafeeder Controller can be triggered by several issues. First, ensure adequate water flow (at least 1 GPM or 3.8 LPM) through the flow assembly. Also, verify that the flow switch wiring or connector isn't loose. The flow switch may be stuck, so clean the sensor mechanicals. A clogged flow assembly can also cause this, so clean the inside of the assembly. If a flow switch is not used, make sure the flow switch input jumper is installed.
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hilllorettaAug 21, 2025
How to troubleshoot a Pulsafeeder Controller that does not power up?
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  Timothy ZimmermanAug 21, 2025
  If your Pulsafeeder Controller isn't powering up, start by checking the power supply to ensure the correct voltage is supplied. Verify the circuit breaker that supplies power to the controller. Inspect and replace fuses F1-F3 if necessary. Finally, check the ribbon cable that connects the upper and lower PC boards inside the controller.
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Steven RothAug 25, 2025
What to do if my Pulsafeeder MicroVision displays “Cond High” alarm message?
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  Heather ReynoldsAug 25, 2025
  If your Pulsafeeder Controller shows a "Cond High" alarm, it means the conductivity reading is above the programmed high limit. You can resolve this by adjusting the conductivity high limit setting. Also, check for excessive solids or debris around the conductivity probe and clean the flow assembly if needed. A faulty or clogged bleed valve or drain can also cause this issue, so replace or clean them as necessary.
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Courtney McintyreAug 26, 2025
What does it mean when my Pulsafeeder MicroVision displays "Cond Low” alarm message?
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  Lance FlemingAug 27, 2025
  The "Cond Low" alarm on your Pulsafeeder Controller indicates that the conductivity reading is below the programmed low limit. To fix this, adjust the conductivity low limit setting. Another possible cause is excessive air around the conductivity probe, so prime the flow assembly. A bleed valve stuck open can also trigger this alarm; in that case, replace or clean the bleed valve.
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Zachary JonesAug 28, 2025
What to do if my Pulsafeeder MicroVision displays "Inhib Limit" alarm message?
- S
  Shari ArnoldAug 28, 2025
  If your Pulsafeeder Controller displays the "Inhib Limit" alarm, the programmed inhibitor feed limit timer may be set too short; adjust the limit timer value to a longer duration. Another potential cause is a clogged or faulty bleed valve, so clean or replace the valve as needed.
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Robyn LindseyAug 30, 2025
Why is my Pulsafeeder MicroVision showing a "Probe Temp" alarm message?
- E
  Ernest MejiaAug 30, 2025
  A "Probe Temp" alarm on your Pulsafeeder Controller means the probe temperature is too high. Allow the process water to cool. If the issue persists, it could be due to a failure in the probe temperature compensation circuitry, requiring you to replace the probe.
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Shawn BlakeSep 1, 2025
What should I do if my Pulsafeeder MicroVision displays "Probe Comm" alarm message?
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  Brenda HernandezSep 1, 2025
  If your Pulsafeeder Controller is showing a "Probe Comm" alarm, start by checking the conductivity probe wiring and connectors for looseness. If the connections are secure, the conductivity probe may be bad and require replacement.
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Joshua CrossSep 3, 2025
Why does my Pulsafeeder Controller display "Inhib Low" alarm message?
- A
  Austin ChapmanSep 3, 2025
  The "Inhib Low" alarm on your Pulsafeeder Controller indicates a low fluid level in the inhibitor drum, so refill the drum. Also, check the drum level switch wiring and connector for any looseness. The drum level switch may also be stuck; in this case, clean the switch sensor mechanicals.
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oandersonSep 5, 2025
What does it mean when my Pulsafeeder MicroVision displays "Bio A Low" alarm message?
- S
  summersstevenSep 6, 2025
  If your Pulsafeeder Controller displays the "Bio A Low" alarm, it means the biocide A drum fluid level is low, so refill the drum. Also, check the drum level switch wiring and connector for any looseness. If the wiring is intact, the drum level switch may be stuck, requiring you to clean the switch sensor mechanicals.
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Sheryl BlairSep 7, 2025
What does it mean when my Pulsafeeder MicroVision displays "Bio B Low" alarm message?
- S
  Seth SmithSep 8, 2025
  The "Bio B Low" alarm on your Pulsafeeder Controller means the Biocide B drum fluid level is low. Refill the drum. Check the drum level switch wiring or connector for looseness.

Pulsafeeder MicroVision Specifications

General

Type	Microprocessor-based controller
Power	100-240 VAC, 50/60 Hz
Enclosure Rating	NEMA 4X
Operating Temperature	-10°C to 50°C
Communication	RS-485 Modbus
Control	PID
Inputs	4-20 mA, Pulse
Outputs	4-20 mA, Relay
Display	Backlit LCD
Memory	Non-volatile

Summary

MicroVision Features Overview

Toroidal Probe Conductivity Measurement

Explains the toroidal probe used for conductivity measurement and its working principle.

Output Relays and LED Indicators

Details the control of four HOA output relays and their LED status indicators.

Drum Level Input Monitoring

Describes the use of three onboard dry contact inputs for drum level monitoring.

Flow Switch Input Operation

Explains the dry contact flow switch input and its function to deactivate output relays.

4-20 mA Output Configuration

Instructions for connecting and configuring the 4-20mA output for external equipment.

Water Meter Input Function

Details the dedicated water meter input for reading dry contact or Hall effect types.

Alarm Relay Functionality

Information on the dedicated dry contact relay for interfacing with alarm reporting equipment.

Installation Guide

Opening the Controller Enclosure

Step-by-step guide on how to safely open the controller's enclosure for access.

Controller Location Selection

Recommendations for selecting an appropriate mounting location for the controller.

Mounting Hardware Guidance

Guidance on selecting suitable mounting hardware for panel mounts and recommendations.

Conductivity Sensor Installation

Instructions for installing the temperature compensated toroidal conductivity sensor.

Flow Sensor Switch Installation

Details on correctly installing the flow switch in a vertical position for accurate readings.

Typical Installation Diagram

Diagram illustrating a typical installation setup of the MicroVision controller and connected components.

Important Symbol Information

Electrical Wiring Guidelines

Relay Board Connections

Diagrams and descriptions for connecting motorized ball valves and pumps to the relay board.

Conduit Models High Voltage Wiring

Instructions for wiring high voltage connections in conduit models, emphasizing safety.

Low Voltage Connections

Details on making low voltage connections for flow switch, drum levels, and water meter.

Flow Switch Input Wiring

How to connect the flow switch input to make outputs inoperative when the cooling tower is shut down.

Sensor Probe Connection

Instructions for connecting the toroidal conductivity sensor wires to the controller.

Water Meter Input Wiring

Guidance on connecting the water meter input to the top board.

Drum Level Input Wiring

Details on connecting drum level inputs to the top board via J10.

4-20 mA Output Wiring

Instructions for connecting 4-20mA equipment to J8 for output.

Alarm Relay Wiring

Using J5 to connect alarm reporting equipment and its relay function.

Front Panel Overview

Keypad Operation Guide

Explanation of how to use the UP/DOWN and soft keys for navigation and input.

Controller Programming Guide

Controller Menu Tree Structure

Visual representation of the controller's menu hierarchy and navigation paths.

Menu Navigation Methods

Guide on using the front panel buttons to navigate through menus and change parameters.

Home Screen Display

Description of the home screen display during normal operation and alarm conditions.

Main Menu Access

Explanation of the main menu as the starting point for accessing Configure and Settings menus.

Status Screen Data Fields

Details on viewing real-time data, output times, and last error on the status screen.

Configure Menu Options

Overview of options available within the Configure menu for system setup.

Date and Time Configuration

How to set the current date, time, and choose date/time display formats.

HOA Outputs Manual Control

Manually controlling the four output relays for servicing or troubleshooting purposes.

Water Meter Configuration

Configuring water meter type, units, and viewing/resetting the totalizer.

Language Selection

Selecting the desired language for the controller's display interface.

Drum Levels Response Settings

Setting the controller's response to low drum level indications for pump control.

Display Dampener Adjustment

Adjusting the display update frequency and dampening controller response to conductivity changes.

Rising;Falling Setpoint Selection

Choosing the direction (rising or falling) for the conductivity setpoint control.

Display Contrast Adjustment

Adjusting the contrast of the display screen for optimal clarity and readability.

User Password Setting

Setting a user password to secure access to configuration and settings menus.

Troubleshoot Screen Diagnostics

Viewing real-time control inputs to diagnose sensor and controller operational issues.

Software Version Display

Displaying the current software version running on the MicroVision controller.

Factory Reset Procedure

Procedure to reset all controller parameters back to their original factory default values.

Settings Menu Overview

Accessing parameters for conductivity, inhibitor feed, and biocide feed control.

Conductivity Menu Configuration

Configuring bleed control, inhibitor feed, probe calibration, and alarm setpoints.

Inhibitor Menu Settings

Parameters for controlling the inhibitor chemical feed output.

Inhibitor Feed Mode Selection

Selecting the operating mode for inhibitor feed: Pulse Timer, Limit Timer, Cycle Timer, or % Post Blowdown.

Inhibitor Pulse Timer Feed Configuration

Configuring inhibitor feeding based on water meter input accumulation in Pulse Timer mode.

Inhibitor % Post Blowdown Feed

Setting inhibitor feed based on a percentage of the blowdown cycle time.

Inhibitor Bio Tracking Mode

Configuring how the inhibitor feed interacts with biocide feed cycles (Skip, Pause, None).

Biocide A or B Feed Configuration

Configuring biocide feed frequency, duration, pre-bleed, and lockout functions.

Biocide Days and Weeks Scheduling

Setting specific days and weeks for biocide feed timers.

Probe Calibration Procedures

In-stream Probe Calibration

Method for calibrating the probe while it's installed in the process flow.

Standard Solution Probe Calibration

Method for calibrating the probe using a standard solution before installation.

Factory Default Settings

Troubleshooting Guide

Maintenance Recommendations

Technical Specifications

Glossary of Terms

Mounting Hole Pattern Diagram

Factory Service Policy

Product Warranty Information

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Table of Contents