Compact DIN-rail DC motor controllers for precise, reliable control of low-power DC motors
The Sprint Electric 340 series is a compact range of single-phase DC motor controllers designed for applications requiring controlled DC motor speed, torque, and braking within a space-efficient DIN-rail installation. With a nominal rating of 0.55 kW and 3.4 A, the range provides a practical solution for machine builders, maintenance engineers, and OEMs working with smaller DC motor systems.
The Sprint Electric 340 series includes different control configurations, allowing engineers to select between conventional single-quadrant operation, isolated control, and four-quadrant regenerative operation, depending on the motor and application requirements. Industrial Motor Warehouse supplies Sprint Electric DC drives for industrial motor control, retrofit and replacement applications across the UK.
In Comparison: Sprint Electric 340 Series
| Specification | Sprint Electric 340 Series |
|---|---|
| Drive type | DC motor controller |
| Input supply | Single phase |
| Mounting | DIN rail |
| Nominal power | 0.55 kW |
| Current rating | 3.4 A |
| Standard configuration | 1-quadrant |
| Available variants | 340, 340i, 340XRi, LV60 |
| Application | DC motor speed and torque control |
| Installation | Compact industrial control panels |
What Is the Sprint Electric 340 DC Drive?
The Sprint Electric 340 DC drive is an electronic controller used to regulate the electrical power supplied to a DC motor. By controlling the motor’s armature voltage and current, the drive enables controlled acceleration, operating speed, and torque.
The standard 340 is a single-quadrant DC controller, making it appropriate for applications where the motor operates in one direction and regenerative braking is not needed.
For applications that need electrical isolation or regenerative operation, the 340 family includes alternative configurations. The 340i provides an isolated arrangement, while the 340XRi is a four-quadrant regenerative version. This difference is important when selecting a controller because the required quadrant configuration depends on the machine’s direction, braking, and load characteristics.
Sprint Electric 340 DC Motor Controller Variants
The Sprint Electric 340 DC motor controller series provides several configurations rather than a single fixed drive specification.
Sprint Electric 340
The standard 340 is a compact, non-isolated, single-quadrant DC controller rated at 3.4 A and 0.55 kW. It is intended for straightforward DC motor speed-control applications where regenerative operation and an electrical solution are not needed.
Sprint Electric 340i
The 340i provides an isolated configuration while retaining the compact form factor and nominal 0.55 kW / 3.4 A rating. Isolation can be an important consideration when integrating the drive into a machine control architecture where the motor circuit and control system need greater electrical separation.
Sprint Electric 340XRi
The 340XRi extends the family into four-quadrant regenerative DC motor control. Industrial Motor Warehouse has 340XRi at 0.55 kW and 3.4 A for single-phase applications.
A four-quadrant drive can control both motor direction and torque direction, making this configuration more appropriate for applications needing controlled reversing and regenerative braking.
LV60 Variant
The wider 340 family also includes an LV60 variant for lower-voltage DC motor applications. The exact motor voltage and current requirements should be checked against the relevant product datasheet before selecting a drive.
How Does a Sprint 340 DC Drive Work?
A Sprint 340 DC drive converts the incoming AC supply into controlled DC power for the motor. The controller regulates the electrical output according to the required motor operating conditions.
In a basic speed-control application, the control signal establishes the required motor speed while the drive adjusts the armature supply accordingly. Motor current is directly related to torque production, so current regulation is important when the load changes.
1-Quadrant vs. 4-Quadrant DC Control
Understanding the quadrant configuration is essential when choosing between models.
| Control Characteristics | 1-Quadrant 340 | 4-Quadrant 340XRi |
|---|---|---|
| Forward motoring | Yes | Yes |
| Reverse motoring | No | Yes |
| Regenerative braking | No | Yes |
| Controlled reverse operation | Limited | Yes |
| Typical use | Simple speed control | Reversing and regenerative applications |
Sprint Electric 340 Series: Typical Applications
The compact architecture of the Sprint Electric 340 series makes it suitable for smaller industrial DC motor installations where a full-size chassis-mounted controller would be unnecessary.
Potential applications include:
- Small conveyors
- Printing and finishing machinery
- Packaging equipment
- Machine tools
- Laboratory and test equipment
- Material handling systems
- Small winding applications
- OEM machine assemblies
- Replacement of obsolete DC controllers
- Auxiliary DC motor systems
Selecting the Correct Sprint Electric 340
Before buying a Sprint Electric 340 DC motor controller, engineers should verify the following:
1. Motor Armature Voltage
The drive's output voltage must be compatible with the DC motor's rated armature voltage.
2. Armature Current
The controller must be capable of supplying the motor's required continuous and transient current without exceeding its rated operating limits.
3. Quadrant Requirement
Choose the standard 340 for basic one-direction operation, or investigate the 340XRi where four-quadrant control and regeneration are required.
4. Electrical Isolation
Where isolation between power and control circuits is required by the machine design, the 340i configuration should be considered.
5. Motor Field Requirements
Check whether the motor has a separate field circuit and confirm the required field supply before installation.
6. Panel Installation
The DIN-rail format is useful where control-panel space is restricted, but available clearance, ventilation, and wiring requirements must still be considered during installation.
Sprint Electric 340 Series at Industrial Motor Warehouse
For compact DC motor control, the Sprint Electric 340 series provides a practical range of DIN-rail solutions.
Browse the available Sprint Electric 340 DC drive options at Industrial Motor Warehouse and select the configuration that matches your motor’s electrical ratings and machine-control requirements.