Dart Controls Digital SCR Drive Catalog Page

FEATURED

Digital SCR Drive Team

Dart Controls is the exclusive provider of Digital DC drives to the
market. The Dart MicroDrive is a microprocessor-based closed
loop DC SCR drive offering an integrated, programmable digital
display.

Originally developed for the conveyor pizza oven, MicroDrives
have found broad application across many industries. Of
particular value to the OEM designer / plant operator is the
integrated drive, display, and logic controller functionality all in
one unit.

The MicroDrive comes in two styles depending on the
application - the MD Series (for continuous applications) and
the MD Plus Series (for start/stop or applications requiring
rapid drive response time).

PRODUCT

MD50E

The programmable display makes machine operation for the
end user easier, providing drive speed information in meaningful
engineering units (GPM, FPM, MM:SS, % of Master, etc.)

Both the MD and the MD Plus Series come in panel mount and

stand alone enclosed versions. Each may be congured in three

modes - Rate, Time and Follower. Follower mode allows for two
or more motors to operate at speeds in proportion to each other

- a common need in blending, batch and synchronized material
feed and handling applications. Many times the logic controller
functionality built into the MicroDrive can eliminate the need for
a PLC and its custom programming.

The MD Plus offers the additional benet of a velocity loop PID

control algorithm, and options for 4-20mA process signal follower
and industrial protocol serial communication. Development will
continue on the MD Plus to offer additional serial communication
protocols, additional program management tools and a Graphic

User Interface (GUI) for both conguration and control.

The Dart MicroDrive is a prime example of how a customer need
evolved into a successful, innovative drive product.

MD50P

MD10P

RoHS

PU-E Series

Performance-matched
for use with the MD Series

MD SERIES FEATURES + SPECIFICATIONS

• Dual Voltage 120/240 VAC, 50/60Hz

• Full HP rated - no auxiliary heat sink required

• 85-250VAC line voltage operating range

• Closed loop - ± 0.1 % regulation*

• Encoder required - See Dart PU Series

• Barrier terminal strip - optional plug terminal strip

• Full wave bridge supply

• Congurable Minimum & Maximum speed

• Congurable Linear Acceleration and Deceleration

• Programmable display units

• Non-volatile memory retains custom programming

• Program lockout safety feature

• Custom user program memory storage & restore

• -10° to +45°C ambient temperature

• 100:1 speed range

• Overload capacity: 200% for one minute

• Transient voltage protection

• Congurable alarms with Form C relay output

• Inhibit circuit–permits low power start & stop

• Suitable for wash down applications
* Sensor PPR/application dependent

Model Width Length Depth Weight

MD10P/

MD40P¹

MD3P/

MD50P²

MD3E/

MD50E

1 – Front bezel is 4.54 x 2.29 in. 2 - Front bezel is 4.54 x 4.18 in.

3.62 in

[9 .19 c m]

3.62 in

[9 .19 c m]

5.13 in

[13.03 cm]

1.6 6 i n

[4.21 cm]

3.50 in

[8.88 cm]

7.40 in

[18.80 cm]

4.63 in

[11.75 cm]

4.63 in

[11.75 cm]

3.90 in

[9.91 cm]

1.3 2 l b

[0.60 kg]

2.17 lb

[0.98 kg]

2.19 lb

[0.99 kg]

Optimized for use with

the Dart PU Series Speed Sensor

Base Model [MD Series]

Model

MD10P

MD3P

MD3E

Supply

Voltage

120/240

VAC

120/240

VAC

120/240

VAC

Motor

Voltage

90/180

VDC

90/180

VDC

90/180

VDC

Current HP Body -P -1 OPT3 -9 OPT51 -420

5 ADC 1/8 -1 P F F

10 AD C 1/8 -2 P F F

10 AD C 1/8 -2 E F F

Base Model [MD Plus Series]

Model

MD40P*

MD50P*

MD50E*

P – Panel mount √ - Option is available N/A – Option Not available

E – NEMA 4 enclosed F – Option is available as Factory Installed only

* PU-40 sensor is recommended for these models
1 - A minimum 500 and maximum 50,000 pulses/min sensor feedback for proper operation
2 - A minimum 500 and maximum 600,000 pulses/min sensor feedback for proper operation

Supply

Voltage

120/240

VAC

120/240

VAC

120/240

VAC

Motor

Voltage

90/180

VDC

90/180

VDC

90/180

VDC

Current HP Body -P -1 OPT3 -9 OPT51 -420

5 ADC 1/8 -1 P N/A N/A

10 AD C 1/8 -2 P N/A N/A

10 AD C 1/8 -2 E N/A F

1

2

Options

ü

ü

ü

Options

ü

ü

ü

F N/A N/A

F N/A N/A

F N/A N/A

N/A

N/A

N/A

ü ü

ü ü

ü ü

OPTION DESCRIPTION

-P: Plug-style terminal strip for ability to remove all wires / harness connection easily

-1: Provision for external set of Up/Dn push buttons
OPT3: Option card that boosts signal from 2-wire (non-powered) magnetic proximity sensors

-9: Blank front bezel overlay (all references to Dart removed)

OPT51: RS485 Serial Communication card. Factory installed in MD50E only - eld installed only in MD40P

and MD50P

-420: 4-20mA isolated input/output card. Factory or eld installed (as OPT420). Does NOT supply loop power

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