Summary of Contents for LMI Technologies Liquitron DP5000-1A
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Manual Manual Manual Manual Manual Instruction Liquitron™ DP5000 Series pH Controller For file reference, please record the following data: Model No: Serial No: Installation Date: Installation Location: When ordering replacement parts for your LMI Controller or accessory, please include the complete Model Number and Serial Number of your unit. 201 Ivyland Road Ivyland, PA 18974 USA TEL: (215) 293-0401...
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com Introduction The Liquitron DP5000 Series pH Controllers are designed for a variety of industrial pH applications including metal ™ finishing, water treatment, printed circuit board manufacturing and waste treatment. The DP5000 is a microprocessor-based pH controller with a backlit customized display and tactile keypad for ease of programming.
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com Installation Pre-Installation Be sure that the unit has a plug and voltage code compatible with the power source that you intend to use. CAUTION Environment The housing is corrosion and spray resistant but should not be subjected to excessive spray or ambient temperature over 122°...
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com Electrical Installation Electrical Connections To reduce the risk of electrical shock, the control or metering pump must be plugged into a ground outlet with ratings conforming to the data on the control panel. It must be connected to a good ground. DO NOT USE CAUTION ADAPTERS! All wiring must conform to local electrical codes.
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com 3.2.2 Field Wiring Instructions Typical US field installation would include a 6 ft (2 m) AC cord wired and two (2) 1 ft (30 cm) AC receptacles (‘ON/OFF’ mode) or two (2) 10 ft (3 m) pump drive cables (‘PROPORTIONAL’ mode) installed. A BNC receptacle would be installed for the pH probe.
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com pH Adjustment Pump(s) There are two (2) versions of the DP5000, one is the ‘ON/OFF’ Output and the second is ‘PROPORTIONAL’ Output. The On/Off Output DP5000 pH Controller will operate any pH adjustment pump(s) which operate on the same line voltage as the controller itself.
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com This key when pressed will display details of the last successful electrode calibration. (Holding this key for five (5) seconds will allow entry into a new calibration procedure [single or two point]). Pressing this key will cause the display to alternate showing various settings.
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com When the pH value exceeds the programmed pH alarm point (12.5), the ‘ALARM’ flashes and the alarm relay is activated. Throughout this manual, the term ‘pulse’ is used to describe the mechanical stroke of the pump, as strokes per minute (SPM).
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com (6) ..Press to increase/decrease the pH for Set Point 2. (7) ..Press again. (8) ..Press to increase/decrease pump speed (pulse/min) for Set Point 2. ‘Pump B’ (Base Pump) is programmed in a similar way. Set points 1 and 2 must be separated by 0.5 pH minimum.
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com In this example, ‘Pump B’ will turn on at a pH of 3.5 (set point - ∆ pH) and will turn off when pH reaches 4.0. It is highly recommended that the hysteresis (pump off function) be used to prevent relay chatter. The function of the hysteresis is to prevent pump relay chattering.
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(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com If the 4-20 mA option board is installed, the following screens will appear. If these do not appear and the 4-20 mA PCB is installed, go to Section 4.6, Advanced Menu, and program option “7”...
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com Calibration (Viewing Last Calibration Data) Press the key once. CALIBRATE will be visible and the ‘mV/pH’ and ‘%’ (slope) of the previous calibration will be displayed. The display will alternate between ‘mV/pH’ and ‘° C.’ ‘2 Point’...
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(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com (2) ..Press again. ‘2 Point’ will start flashing. Use the keys to toggle between ‘1 Point’ and ‘2 Point.’ (3) ..Press again. ‘ATC’ (or ‘MANUAL’) will start flashing. Use the keys to toggle between ‘ATC’...
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com (8) ..Press again and the symbol will prompt you to put the probe in ‘Buffer 2’. Wait for the mV value to settle. (9) ..Press again. This will accept the second calibration value and will display the ‘mV/pH’...
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(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com Setting Timers: The unit must be in the ‘OFF’ (edit) mode to change the timer settings. For proportional mode pump run time must be set above 11 HR 01 Min to ensure continuous operation. (1) ..
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(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com (7) ..Press key to advance to ‘Response Rate’. This is programmed in ∆ pH units. The smoothing of the input signal is determined by delta (pH) time. The ‘Response Rate’ is the time that the computer display takes before it updates the pH readings.
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com Similarly, the Pump Control Points can be displayed while in the ‘RUN’ Mode by pressing the ‘Pump A’ or ‘Pump B’ keys once. Press and the following screens display: +3 Seconds Advanced Menu: Holding the key for five (5) seconds accesses the ‘Advanced Features’...
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com Maintenance pH Electrode and Cable The most frequently replaced part is the pH electrode (not supplied with controller), which will deteriorate with age. Refillable electrodes should be checked for level frequently, and replenished with filling solution as necessary. An electrode may also fail because of: •...
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com DP5000 Specifications Power Requirements 115 VAC ±15%, 60 Hz 230 VAC ±15%, 50 Hz Voltage input selectable via a selector switch located on the I/O PCB. Inputs Flow Switch, Remote ON/OFF, Spares. All low voltage inputs active low, i.e., the active state is when the switch is closed.
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(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com Pre-amplifier Output Voltages Voltage: ± 5 V Output Voltage Tolerance: ± 5% maximum Current Output: ± 10 mA maximum Optional Output 500 Ω maximum resistance 4-20 mA Load: Accuracy: ± 0.2 mA - The 4-20 mA isolated Control Outputs (Pump A / Pump B) Opto-Isolated Open Collector (2 mA)
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com Program Log For record keeping, a program log is provided below. Proportional ON/OFF Proportional ON/OFF Pt 1 Pt 2 Pt 1 Pt 2 Pump A Set Point 10.5 Pump A Pulses/Min / / / Pump B Set Point Pump B Pulses/Min...