Product Overview
The Grundfos SMART Digital DDA-C is a compact, positive-displacement diaphragm dosing pump. It features a variable-speed drive powered by a stepper motor and intelligent control electronics designed for minimum energy consumption.
This series operates at full stroke length to ensure optimum accuracy, effective priming, and reliable suction, even with high-viscosity or degassing liquids. The duration of the discharge stroke automatically adjusts based on the set capacity, ensuring an optimal, uniform, and continuous discharge flow.
The pump is designed for ease of installation and operation. It includes a click-stop mounting plate that allows for installation in three different positions without additional accessories. The control cube can be easily rotated to face the front, left, or right. Commissioning and operation are intuitive, facilitated by a click wheel and a multi-coloured backlit graphic plain-text LC display. The control elements are protected by a transparent cover.
The DDA-C offers built-in connectivity for easy setup and tracking via the Grundfos GO app, and seamless integration into Modbus RTU or TCP bus systems.
Image Description: A visual representation of the Grundfos SMART Digital DDA-C dosing pump shows a compact, modern unit with a prominent display screen and control interface. It is designed for professional industrial or commercial applications. (Note: Actual product appearance may vary.)
Dosing Head Components
- Durable and chemically resistant full PTFE diaphragm.
- Double ball valves for maximum dosing accuracy.
- Deaeration valve for easy start-up.
Operation Modes and Functions
- Manual dosing in ml/h, l/h, or gph.
- Pulse control in ml/pulse (includes memory function).
- Analog control, 0/4-20 mA (scalable).
- Pulse-based batch function in ml, l, or gal.
- Timer-based batch function (dosing timer cycle or week).
- Fieldbus control via integrated Modbus RTU and TCP; Profibus DP, Profinet, and Ethernet IP (requires CIM/CIU models).
- Cloud control and monitoring via Smart Digital Chempairing Suite and Grundfos Connect.
Other Features
- Auto deaeration during pump standby to prevent stand-still due to air-locking.
- Two SlowMode steps (anti-cavitation) available: 50% and 25% maximum flow, suitable for high-viscosity or degassing liquids.
- Max. Capacity function to limit the pump's output to a set maximum.
- Service information display shows when service is due and provides wear-part order numbers.
- Two-step key lock function to protect the pump against unauthorized access.
- Multi-parameter dashboard function to display information on up to 4 parameters simultaneously.
- Counter for total dosed volume (resettable) and operating hours.
- Functionality to save, copy, and load customized settings, as well as reload factory settings.
Signal Inputs/Outputs
- Inputs: Pulse, analog 0/4-20mA, external stop, low-level and empty-tank signal.
- Outputs: Two potential-free output relays (max. 30 V AC/DC) configurable for functions such as alarm, stroke signal, pump dosing, or timer.
- Output analog 0/4-20mA.
- Fieldbus communication interface (integrated Modbus RTU and TCP; Profibus DP, Profinet and Ethernet IP via CIM/CIU models).
