Walchem
Walchem W600-CT Cooling Tower Controller
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Cooling towers are used in various industrial processes to lower temperature of water stream. There are several factors that help ensure the performance of these devices. Conductivity, level of dissolved solids, corrosion inhibitor, feed inhibitor, and biocide chemicals are a few of them. The cooling tower controllers are the devices that allow process owners to take care of these factors efficiently. There are several cooling tower controller technologies available in the market, which allow process owners to maximize the value of their investments. Walchem’s W600-CT Cooling Tower Controller is one such technology that offers a reliable and powerful control of your water treatment program. At Cannon Water Technology, Inc., this cooling tower controller is provided under SKU – W600.
Specifications of Walchem W600-CT Cooling Tower Controller
The following specifications of Walchem W600-CT cooling tower controller makes them an industry standard.
- Power: 100-240 VAC, 50 or 60 Hz, and 7A max
- Fuse: 6.3 Amp
- Enclosure: Polycarbonate Resin, NEMA 4X, lockable hinged door.
Digital Input Signals
Inputs
Sensor Input Signals (0, 1 or 2 depending on model code) | |
Contacting Conductivity | 0.01, 0.1, 1.0, or 10.0 cell constant OR |
Electrodeless Conductivity | OR |
Disinfection | OR |
Amplified pH or ORP | Requires a preamplified signal. Walchem WEL or WDS series recommended. |
| Each sensor input card contains a temperature input |
Temperature | 100 or 1000 ohm RTD, 10K or 100K Thermistor |
Analog (4-20 mA) Sensor Input (0, 2 or 4 depending on model code) | |
Capability | 2-wire loop powered and self-powered transmitters supported |
Each dual sensor input board has two channels | Channel 1, 130 ohm input resistance and Channel 2, 280 ohm input resistance. The combination input board has one channel, 280 ohm input resistance. |
Available Power | One independent isolated 24 VDC ±15% supply per channel. 1.5 W maximum for each channel. 2W (83 mA at 24 VDC) total power consumption for all channels (four total channels possible if two dual boards are installed; 2W is equivalent to 2 Little Dipper sensors) |
Digital Input Signals | |
State-Type Digital Inputs | |
Electrical | Optically isolated and providing an electrically isolated 9V power with a nominal 2.3mA current when the digital input switch is closed. |
Typical response time | < 2 seconds |
Devices supported | Any isolated dry contact (i.e. relay, reed switch) |
Types | Interlock |
Low Speed Counter-Type Digital Inputs | |
Electrical | Optically isolated and providing an electrically isolated 9V power with a nominal 2.3mA current when the digital input switch is closed, 0-10 Hz, 50 msec minimum width. |
Devices supported | Any device with isolated open drain, open collector, transistor or reed switch. |
Types | Contacting Flowmeter |
High Speed Counter-Type Digital Inputs | |
Electrical | Optically isolated and providing an electrically isolated 9V power with a nominal 2.3mA current when the digital input switch is closed, 0-500 Hz, 1.00 msec minimum width. |
Devices supported | Any device with isolated open drain, open collector, transistor or reed switch. |
Types | Paddlewheel Flowmeter |
Outputs
Powered Mechanical Relays (0 or 6 model code dependent) |
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Dry Contact Mechanical Relays (0, 2 or 4 model code dependent) |
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Pulse Outputs (0, 2 or 4 model code dependent) |
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4 - 20 mA (0 or 2 model code dependent) |
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Mechanical Controller
Enclosure Material | Polycarbonate |
Enclosure Rating | NEMA 4X (IP65) |
Dimensions | 9.5 x 8 x 4” (241 x 203 x 102 mm) |
Display | 320 x 240 pixel monochrome backlit display with touchscreen |
Ambient Temperature | -4 to 131°F (-20 to 55°C) |
Storage Temperature | -4 to 176°F (-20 to 80°C) |
Key Features of Walchem W600-CT Cooling Tower Controller
The following are the key features of dual cooling tower controller. These features have immensely contributed to their acceptance in the industry.
- Easy Setup: There is a touchscreen display which is large and equipped with icon based programming. In addition to this, multiple language support is offered during the set up. All these features make it easy to set up, and extremely user-friendly.
- Flexibility: The flexibility is brought by a universal sensor. The controller is compatible with all types of sensors. Analog input board and combination sensor input adds to the flexibility of the device. In addition to these, a complete flexibility is guaranteed with each relay. They include:
- Timer-based activation
- On/off Setpoint
- Pulse Proportional Control and PID Control (available on 4-20 mA or pulse solid state opto outputs)
- Time Proportional Control
- Out-of-Range or In-Range Activation
- Timer-based Activation
- Probe Wash
- Timed Activation Triggered by a Paddlewheel flow meter’s total flow or a Water Contactor
- Activation as a Percent of Another Output’s On-time
- Activation on the Basis of a Contact Closure
- Spike Set Point
- Boiler Blowdown on Conductivity Using Intermittent Sampling and Biocide Timer for Boiler and Cooler Applications.
- Excellent Control: The device offers lead lag control up to 6 relays. Datalogging is also provided by the device. It can email alarm messages, system summary reports, and datalog reports, thereby informing a user of necessary steps to be taken for proper functioning of the cooler tower.
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Certifications
The dual cooling tower controller possesses the following certifications:Safety
UL 61010-1:2012, 3rd Edition
CSA C22.2 No.61010-1:2012, 3rd Edition
IEC 61010-1:2010 3rd Edition
EN 61010-1:2010 3rd EditionEMC
IEC 61326-1:2012
EN 61326-1:2013To know more about Walchem W600-CT cooling tower controller or any other cooling tower controllers, please contact our team today.
Know more about the products through PDF :-
Walchem W600 Controller Manual
Walchem W600 W900 Controller Modbus Manual