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Product > AC, DC Servo Drives > MDS Series



MDS Series – Modular Drive System

4.0A to 34.0A rms (8 to 68 peak) Multi-axis Servo Drive Solutions

230V / 460V

The Modular Drive System (MDS) is a powerful and cost effective solution for applications with multiple axes. The MDS utilizes a unique backplane architecture that provides a common bus platform for one of three sizes of power modules and up to eight drive modules. The MDS modules can operate on a 230V or 460Vac input. Plus, there are five different sizes of drive modules to meet the needs of almost any multiple axis application.

FM control modules provide EN drives with “snap-in” functionality for indexing (FM-2), programming (FM-3E) and advanced programming (FM-4E). This modular approach allows users to choose the level of advanced machine control they need based on the application's requirements. As part of our "buy what you need" philosophy, the MDS motion functionality is easily scalable by adding on FM modules.



Power Requirements

AC Input Voltage: 3Ø, 187 to 528 VAC, 47 - 63 Hz
(460 VAC for rated performance)

AC Input Current
MP-1250: 17 Arms (15A @ 100 ms soft start)
MP-2500: 35 Arms (15A @ 100 ms soft start)
MP-5000: 70 Arms (15A @ 100 ms soft start)

Output Continuous Current
MD-404: 4 Arms/2.8 Arms (5 kHz/10 kHz)
MD-407: 7 Arms/5 Arms
MD-410: 10 Arms/6.5 Arms
MD-420: 20 Arms/14 Arms
MD-434: 34 Arms/22 Arms
(Current ratings the same for 460V or 230V

Output Peak Current
MD-404: 8A/5.6A (5 kHz/10 kHz)
MD-407: 14A/10A
MD-410: 20A/13A
MD-420: 40A/28A
MD-434: 68A/44A
(Current ratings the same for 460V or 230V

Continuous Output Power
(Ratings based on 5 kHz, 460V/230V operation)
MP-1250: 12.5 kW/6.25 kW
MP-2500: 25 kW/12.5 kW
MP-5000: 50 kW/25.0 kW
MD-404: 3.3 kW/1.7 kW
MD-407: 5.8 kW/2.9 kW
MD-410: 8.3 kW/4.2 kW
MD-420: 16.7 kW/8.4 kW
MD-434: 28.3 kW/14.2 kW

Switching Frequency: 5 or 10 kHz

Logic Supply: +21.6 to 26.4 VDC, (Required Accessory)

Encoder Supply Output: +5 VDC, 250 mA

System Efficiency: 90%

Internal Energy Absorption—System Bus Capacitance

Power Modules (460V/230V):
MP-1250: 110 Joules / 236 Joules
MP-2500: 183 Joules / 393 Joules
MP-5000: 293 Joules / 629 Joules

Drive Modules (460V/230V):
MD-404: 8 Joules / 17 Joules
MD-407: 17 Joules / 37 Joules
MD-410: 26 Joules / 55 Joules
MD-420: 37 Joules / 79 Joules
MD-434: 37 Joules / 79 Joules

Integral Transistor connected to an external resistor:
: 30 Ohm minimum, 6 kW max
MP-2500: 30 Ohm minimum, 6 kW max
MP-5000: 9 Ohm minimum, 12 kW max

I/O Supply: +10 to 30 VDC

Power Module Control Inputs
Digital:(2) +10 to 30 VDC, 2.8 kOhm, Sourcing, Optically Isolated

Power Module Control Outputs
Digital:(6) Digital: +10 to 30 VDC, 150 mA, Sourcing, Optically isolated
Relay Contact:(1) AC Interlock, 24 VDC, 5A

Drive Module Control Inputs
Analog: (1) Analog: +/- 10 VDC 14 bit, 100 kOhm, Differential
Analog Max Input Rating: +/- 14 VDC, Differential or Each Input with Reference to Analog Ground
Digital: (5) +10 to 30 VDC, 2.8 kOHm, Sourcing, Optically isolated
Pulse: (1) Pulse, Differential: RS422, 2 MHz/Channel, 50 % Duty Cycle (1) Pulse, Single
Ended: TTL Schmitt

Drive Module Control Outputs
Analog: (2) +/- 10 VDC 10-bit, single ended, 20 mA
Digital: (3) +10 to 30 VDC, 150 mA, Sourcing, Optically isolated
Motor OverTemperature: (1) 0 to +5 VDC, single ended
Pulse: Differential: RS422 and TTL compatible, 20 mA/Channel, Sink or Source

Cooling Method
MP-1250: Convection
MP-2500: Integral Fan
MP-5000: Integral Fan
MD-404: Convection
MD-407: Integral Fan
MD-410: Integral Fan
MD-420: Integral Fan
MD-434: Integral Fan


Rated Ambient Temperature: 32° to 104°F (0° to 40°C)

Maximum Ambient Temperature: 32° to 122°F (0° to 50°C) with power derating of 3.5% / 1.8°F (1°C) above 104°F (40°C)

Rated Altitude: 3280’ (1000 m)

Maximum Altitude: For altitudes >3280’ (1000 m) derate output by 1%/328’ (100 m)

Vibration: 10 to 2000 Hz @ 2g

Humidity: 10 to 95% non-condensing

Storage Temperature: -13° to 167° (-25° to 75°C)

Ingress Protection: IP-20

Serial Interface
RS232/RS485 Modbus RTU - 9600 to 19.2 kBaud
Internal RS232 to RS485 Converter

Power Module Weight
: 8.35 lb (3.78 kg)
MP-2500: 8.35 lb (3.78 kg)
MP-5000: 10.25 lb (4.65 kg)

Drive Module Weight
: 8.35 lb (3.78 kg)
MD-407: 8.35 lb (3.78 kg)
MD-410: 8.35 lb (3.78 kg)
MD-420: 10.25 lb (4.65 kg)
MD-434: 12.0 lb (5.44 kg)