DMC II  
DC Motor Control  
   
The DMC II Motor Control is a PWM
motor speed controller using an embedded
micro controller to provide motor speed r
egulation and torque compensation. There
are two version of the DMC II controller.
The DMC II-LV has a 24 VDC @ 6.5amps
output and the DMC II-HV has a 100 VDC
@ 2.8 amps output. The DMC II-LV controller
can be used to control 24 volt permanent
magnet (PM) motors up to 150 watts.
The DMC II-HV can be used to control
90 Volt permanent magnet motors up to
250 watts.
 
 
 
  • Description
  • Features
  • Benefits
 

The DMC II Motor Controller is a PWM motor speed controller using an embedded micro controller to provide motor speed regulation and torque compensation. There are two version of the DMC II controller. The DMC II-LV has a 24 VDC @ 6.5amps output and the DMC II-HV has a 100 VDC @ 2.8 amps output. The DMC II-LV controller can be used to control 24 volt permanent magnet (PM) motors up to 150 watts. The DMC II-HV can be used to control 90 Volt permanent magnet motors up to 250 watts. The DMC II is designed to be used with the CWT Weld Sequence Controllers or a user supplied controller. The DMC II also provides a RS-485 serial port configured to support Modbus RTU protocol.  This port can be used to Operate and configure various features of the DMC II.

The DMC II is used to control linear DC drive motors for wire feed and or travel speed functions. The DMC II provides speed and torque regulation using an optical encoder or phase sampled Back EMF. The embedded controller provides precise motor braking and anti-plugging features to extend motor life.

The DMC II provides remote speed control using a 0-10 VDC input signal.  Two 24 VDC inputs provide remote direction control.  The control provides an optional isolated encoder output signal.  A remote I/O connector located on the rear of the enclosure provides all user control connections.

The standard DMC II can be used with 24 VDC permanent magnet motors up to 150 watts.  The DMC II HV can be used with 90 VDC permanent magnet motors up to 250 watts. A motor connector located on the rear of the enclosure provides all user motor connections.  The control can be used with or without an optical tachometer.  The control uses a 100 line optical tachometer input and can provide a 5 VDC or 15 VDC output for the tachometer.  The tachometer input mode is automatically enabled when an encoder signal is active.  If the encoder is not used the control will switch to the back EMF sample mode for speed regulation.

 
Both DMC II
Embedded micro-controller
Compact/lightweight design
Flexible design
Operates with CWT's control systems
Unique anti-plugging feature
Precise motor braking
   
 
Both DMC II
Provides precise motor control functions
Permits off-line programming, system configuration and remote control
Usable in confined areas
Can be interfaced with other manufacture's equipment
Facilitates ease of installation and operation
Provdes extended motor life
   
 
 
Product Specifications

 

 

 

  • Mechanical
  • Electrical for Low Volt Model
  • Electrical for High Volt Model
 
Dimensions 4.75"h x 2.0"w x 11.0"l (120.6mm x 50.8mm x 279.4mm)
Mounting Dimensions 1.25" wide x 10.25" long, four 0.25" diameter hole
Weight 5 lbs. (2.27kg)
Operating Temperature -10°F to +140°F (-23°C to +60°C)
 
Power Input 120 vdc ±10% @ 5.0 amps
Armature Current 0.5 - 6.5 amps
Armature Voltage 0 - 24 vdc
Encoder Input 5 or 15 vdc 100 lines/rev max frequency 25.0khz
Foward Input 24 vdc @ 20ma (Active High)
Reverse Input 24 vdc @ 20ma (Active High)
Speed Reference Inputs 0-10 vdc @ 0.1 ma
 
Power Input 120 vdc ±10% @ 5.0 amps
Armature Current 0.5 - 3.0 amps
Armature Voltage 0 - 100 vdc
Field Voltage 110 vdc nominal
Encoder Input 5 or 15 vdc 100 lines/rev max frequency 25.0khz
Foward Input 24 vdc @ 20ma (Active High)
Reverse Input 24 vdc @ 20ma (Active High)
Speed Reference Inputs 0-10 vdc @ 0.1 ma
 
 
 
 

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