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W600 Controller Frequently Asked Questions

How does the W600 get programmed? Do I need a computer?
If your W600 has the Ethernet option, you can program the controller with your computer; or you can program it via the touchscreen keypad. If your controller does not have the Ethernet option, you program it via the touchscreen only.
How do I upgrade the software?
Whenever there’s a new upgrade for the controller, it gets posted on our Website. Software upgrades for the W600’s can be found here: http://www.walchem.com/techsupport/W600/Upgrading_Software_W600.htm Save the file to your USB stick. Plug the USB stick into the W600, press Config > File Utilites > Software Upgrade. *Note* You cannot do a software upgrade via browser. It has to be done with the USB stick.
Can I export/Import the config file?
Yes! You just need a USB stick to export and to import the file. Press Config > File Utilities and then either Export User Config File, or Import User Config File. *Note* You cannot do the config file import/export via browser. It has to be done with the USB stick
A relay is not coming on, even though the set point is reached. What’s the problem?
The default for the relays is the OFF mode. In the relay menu, change the mode to AUTO.
Does the W600 work with VTouch?
Yes! You can connect via Ethernet, and set it up on VTouch.
  • Establish a physical connection between the controller and the LAN using a CAT5 cable
  • Program the controller with an IP address, subnet mask and gateway
    • By going to Config -> Network Settings and enabling DHCP or
    • By going to Config -> Network Settings and manually entering the addresses based on the guidance from the LAN’s IT department
    • IP addresses in the 172.18.xxx.xxx range are not allowed.
  • Under Network Settings, enable VTouch • Under Network Settings, enable Live Connect
  • Also program the Update Period (how often data will be sent to VTouch)
What are the network IP settings for Ethernet communications?
The LAN port requirements for the W600:

- TCP Port # 53
- UDP Port # 53
- TCP Port # 44998
- UDP Port # 9012
- TCP Port # 44965

When programming a relay, what is Duty Cycle Period and Duty Cycle?
Duty Cycle Period: Using a duty cycle helps to prevent overshooting the set point in applications where the response of the sensor to chemical additions is slow. Specify the amount of time for the cycle, and the percentage of that cycle time that the relay will be active. The relay will be off for the rest of the cycle, even if the set point has not been satisfied. Enter the length of the duty cycle in minutes:seconds in this menu. Set the time to 00:00 if use of a duty cycle is not required.

Duty Cycle: Enter the percentage of the cycle period that the relay will be active. Set the percentage to 100 if use of a duty cycle is not required.

When programming an Analog Input, what is the difference between AI Monitor and Transmitter?
Select AI monitor if the device connected can be calibrated on its own and the W600 calibration will only be in units of mA. Select Transmitter if the device connected cannot be calibrated on its own and the W600 will be used to calibrate in engineering units of measure.
When programming a relay, what is the purpose of Minimum Relay Cycle?
Enter the number of seconds that will be minimum amount of time that the relay will be in the active or inactive state. Normally this will be set to 0, but if using a motorized ball valve that takes time to open and close, set this high enough that the valve has time to complete its movement.
I have a W600 in the field. Can I order and field-install sensor input cards?
Yes! Sensor input cards AND analog input cards can be added in the field.
A relay is not coming on, even though the set point is reached. What’s the problem?
The default for the relays is the OFF mode. In the relay menu, change the mode to AUTO.
How many digital inputs can I have with the W600 controllers?
The W600 comes with 6 digital inputs. There are NO optional digital inputs that can be added later.
How many sensors can I use with the W600?
The W600 can accommodate up to 2 sensor input cards. There are 2 different input cards.
A single sensor input card.
A dual analog input card.

So you can have:
One sensor input
Two sensor inputs
One sensor input and one dual analog input
Two dual analog input cards totaling 4 analog inputs.

Can I use the same sensors used with W400 controllers with the W600?
The W600 sensor have unique part numbers since the cables are marked differently.  Sensors for W400 controllers (except electrodeless sensors) may be used with the W600 but the labeling on the wires will not match the terminal strips.
The Electrodeless sensors cannot be used on the W600 controllers.
How many relays does the W600 have?
There are 6 relays. The options are:
-All powered;
-Two powered, 4 dry contact;
-Two solid state (pulse proportional); 4 dry contact; -Four solid state (pulse proportional), 2 dry contact
Can I log any of my data with the W600 controller?
Yes. There are three datalogs:
- Daily log: 24 hours at 10 second intervals
- Weekly log: 7 days at 2 minute intervals
- Monthly log: 96 days at 15 minute intervals

All logs contain sensor readings, state-type DI state (custom message), flowmeter rate and total, relay state (On or Off), and the analog output %.

Log files can be downloaded to USB stick on site or to a computer from the web pages
Can I use the Little Dipper with the W600?
Yes. The Little Dipper 2 is a 4 wire transmitter that requires 1 Watt of power in addition to the 4-20 mA loop. The W600 has around 2 Watts available to power transmitters. When the W600 has HVAC enabled, the Fluorometer option is available under Analog Input Type.