The Dart Controls Digital MD Plus Series (MD40/MD50 Digital DC Drive) of closed-loop drives for DC motors up to 2 hp features an isolated 4 to 20mA input/output signal capability.
The MD Plus is a field-programmable closed-loop DC drive system employing an advanced velocity-form PID algorithm for accurate and responsive control. It's ideally suited for metering pump applications by efficiently combining all of the application requirements into a single compact package. Both the input and output signals are isolated from each other and from the control itself.
The 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.
Customers get the DC motor drive, 4 to 20mA input/output, digital display, and relay outputs for pump running and fault alarms, all in one package. Custom faceplate artwork is also available.
Features:
- 1/50 to 2 adjustable hp range
- Universal power supply supports 85 to 265V AC in
- 1/8 or 1/4 DIN panel mount with NEMA 4X faceplate, NEMA 4X stand-alone enclosure
- Front panel field-programming (with lock-out jumper)
- Display speed in any engineering unit of measure
- Two alarm relay outputs (form C, 5 Amp @ 250V AC)
- Large 1/2" LED display
- Master/Follower modes
- Displays set point or actual running speed
- Adjustable PID settings