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Overview
The MD Plus is a field-programmable closed loop DC drive system employing an advanced velocity-form PID algorithm for accurate and responsive control. The MD Pluswith -420 Option offers an isolated 4-20mA input and output for easy integration with existing Process Control systems. The MD Plus is ideally suited for metering pump applications by efficiently combining all of the application requirements into a single compact package. The MD Plus with -420 Option not only accepts a 4-20mA signal to control the pump speed, but it also provides a 4-20mA output signal back to the Process Control that is proportional to the actual running speed. Both the input and output signals are isolated from each other and from the control itself.
The NEW -51 Option adds serial communication capability to all models in the MD Plus Series. RS232 and RS485 protocols are supported.The MD Plus system also has two field-programmable Form C relay contacts that can be set to indicate a wide variety of conditions such as the pump is running, a fault condition exists, and many other events. The MD plus system is available in both enclosed and panel-mount versions. The MD50E-420 version comes in a NEMA 4 enclosure complete with an auto/off/manual switch on the cover. The 1/8 DIN MD40P and 1/4 DIN MD50P panel-mount versions come complete with a NEMA 4X rated faceplate, gasket kit, stainless steel mounting hardware, and connections for an external auto/manual switch.
Specifications
Package Weight (Imperial) | 0.98 kg |
Frequently Asked Questions
What voltage range does the MD50P-420 operate on?
The MD50P-420 operates on dual voltage 120/240 VAC, 50/60Hz, with a line voltage operating range of 85-250 VAC.
What is the ambient temperature range for this device?
The device can operate in ambient temperatures from -10° to +45°C.
What sensor feedback is required for proper operation?
The MD50P requires a sensor with a minimum of 500 and maximum of 600,000 pulses per minute for proper operation.
What motor horsepower range does the MD50P support?
The MD50P supports motor horsepower ranges from 1/8 to 1 HP for 120 VAC and 1/4 to 2 HP for 240 VAC.
What overload capacity does the device have?
The MD50P has an overload capacity of 200% for one minute.
What is the speed range and regulation accuracy?
The device offers a 100:1 speed range with a closed loop regulation of ± 0.1% (dependent on sensor PPR and application).
What special features does the device include?
Features include programmable display units, non-volatile memory, program lockout safety, custom user program storage, and configurable minimum/maximum speed and acceleration/deceleration.
Frequently Asked Questions about Dart Controls
What certifications and standards do Dart Controls products comply with?
Dart Controls products are certified to multiple international standards across electrical, safety, and environmental domains. Key certifications include UL (cULus), CE, UKCA, EAC, and C-Tick, with compliance to standards such as ISO 9001, RoHS, EN 60529, IEC 61800-9-2, and various functional safety standards like EN 61800-5-2 and EN ISO 13849-1. Their products meet rigorous industrial automation requirements for electrical equipment, environmental protection, and safety-related control systems.
What industries and applications are Dart Controls products used for?
Dart Controls products are used across multiple industrial sectors, with key applications including conveyors, pizza oven equipment, door closing mechanisms, and controls for fractional DC motors, brushless DC gear motors, and low voltage DC motors. Their SCR drives and motor controls serve OEMs, automation integrators, end users, and control specialists in industries requiring precise DC motor speed and motion control.
What technical support does Dart Controls offer?
Dart Controls offers comprehensive technical support through their direct phone line at (317) 873-5211. Their support includes personalized customer service, technical consultation, and assistance with product selection and application. As a 'Total Solutions Provider', they are committed to delivering second-to-none support and assistance, with a focus on helping customers find the right variable speed motor control solutions for their specific needs.
What are the main product lines offered by Dart Controls?
Dart Controls offers a comprehensive range of motor control products including AC Variable Frequency Drives (EZ VFD Series), AC Triac Variable Voltage Supplies, Digital Speed Pots, Analog SCR Drives (multiple series including 150, 125, 15, 130, 253, and 530 Series), Digital SCR Drives, Commutrol Brushless DC Drives, Low Voltage DC PWM Drives, and Speed Sensors. Their product lines are designed to provide flexible motor control solutions for various industrial applications, with options ranging from chassis to NEMA 4X enclosed configurations.
What are the key features of Dart Controls products?
Dart Controls offers a comprehensive range of innovative motor control products featuring advanced digital and analog SCR drives, digital speed potentiometers, and specialized drive solutions. Key features include flexible product configurations like the 150 Series SCR drive with multiple wiring terminations, fusing options, and IP66/NEMA4X enclosures, as well as unique digital drives like the MicroDrive with integrated programmable displays, closed-loop control, and multiple operational modes for diverse industrial applications.
How are Dart Controls products typically installed?
Dart Controls products are typically installed using panel-mount or standalone enclosed configurations, with flexible mounting options to suit various industrial applications. Most product lines like the EZ VFD, Digital SCR Drives, and Analog SCR Drives offer both open chassis and NEMA 4X enclosed models, allowing for easy integration into control panels or direct machine mounting. Installation typically involves connecting power inputs, motor outputs, and optional control signals like voltage followers or serial communication interfaces.
What communication protocols do Dart Controls products support?
Dart Controls supports multiple communication protocols, with Modbus RTU serial interface being a key offering for the 150 Series. Their products are designed to interface with PLCs, microcontrollers, computers, and HMIs through traditional analog signals and increasingly through serial network communication. While specific protocol support may vary by product line, Dart Controls demonstrates flexibility in communication integration for industrial automation applications.
What environmental ratings do Dart Controls products have?
Dart Controls offers multiple environmental ratings across their product lines, primarily NEMA 1, 2, 3R, 4, and 4X enclosure types. Most standard models like DS20, DS30, DR30, and DR50 come standard with NEMA 3R protection, with optional NEMA 4X upgrades available. Specific product lines feature different ratings, ensuring protection against dust, water, and corrosive environments for both indoor and outdoor applications.
What accessories are available for Dart Controls products?
Dart Controls offers several key accessories for their products, including speed sensors, LED support, and switch options. The PU Series speed sensors are particularly notable, with indoor (PU-E) and outdoor/wash down (PU-R) models available. Additional sensor options include the CF Series (hall-effect motor C-face mount) and OPU (optical) sensors. Some product lines also feature accessories like a -29 covered mounted FWD/Off/REV switch, LED chassis support, and various mounting configurations including open chassis (C) and NEMA 4X enclosed (E) options.