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6.18 [157.0mm]

2.30 [58.4mm]

1.39 [35.2mm]

3.38 [85.9mm]

 

222 W. Memorial Road, Oklahoma City, OK  73126-0508 

 Phone: 

1-800-624-7697 

 Fax: 405-755-8425 

 www.magpowr.com 

 E-mail: [email protected] 

 

 

INSTRUCTION MANUAL 

MODEL DFC-90 

DANCER-FOLLOWER ARM CONTROL 90 VDC 

 

All of the information herein is the exclusive proprietary property of Maxcess International, and is disclosed with the 

understanding that it will be retained in confidence and will neither be duplicated nor copied in whole or in part nor 

be used for any purpose other than for which disclosed. 

 

Copyright 2004, all rights reserved.  

 

Periodically there will be updates to this manual.  The latest version is available at 

www.magpowr.com

 or by calling 

1-800-MAGPOWR (624-7697). 
 

1.0  

Introduction 

 

The MAGPOWR Model DFC-90 is a complete solution for follower arm or dancer control applications.  The DFC-90 

provides a 90 vdc current regulated output to control electromagnetic clutches and brakes.  The DFC-90 also 

provides a small reverse current to minimize the drag torque of the clutch / brake. 

 

The Model DFC-90 has four jumper selectable current ranges.  Maximum outputs for the individual ranges are 

0.125, 0.25, 0.5 and 1.0 adc.  The appropriate range is determined by the current rating of the clutch or brake to be 

controlled.  For best torque control resolution, the lowest current range providing sufficient current for maximum 

operating torque should be selected. 

 

Connections are provided for an external 1 madc current meter.  The meter display will indicate clutch / brake 

output current as a percentage of the output range selected. 

 

The control circuits are electrically isolated from the power circuits. 

 

2.0  

Installation 

 

The DFC-90 is intended for installation on a vertical panel using a DIN 35 rail with the wiring terminals facing down.  

Figure 1 shows the enclosure dimensions. 

 

Wiring to and from the DFC-90 must be done with double or reinforced insulation or protective screening which 

provides protective separation.  All wiring should comply with the essential requirements of the appropriate 

standard(s) and is the responsibility of the installer. 

 

Route control signal wiring away from AC wiring.  Connect shields of shielded cable to the terminals indicated as 

“SHIELD”.  Maximum shield length and maximum length of wires outside of the shield is 3 in. (75 mm). 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 1   

Enclosure Dimensions 

850A265-1 

10

/04  Rev. D 

Summary of Contents for DFC-90

Page 1: ...current ranges Maximum outputs for the individual ranges are 0 125 0 25 0 5 and 1 0 adc The appropriate range is determined by the current rating of the clutch or brake to be controlled For best torq...

Page 2: ...the IP rating The enclosure may be opened by inserting a flat blade screwdriver under the retaining tabs in the base See figure 2 5 0 Follower Arm Applications 5 1 Electrical Connections Figure 5 sho...

Page 3: ...is half way through its travel DFP 2 To find the electrical center point of pot rotation use a digital multimeter type ohm meter to measure from the white wire wiper to the red or black wire Turn the...

Page 4: ...lete and the DFC 90 is ready for operation Optional adjustments Stop Multiplier and Stop Time The STOP MULT pot can be used to increase the torque while the machine is stopping The increased torque is...

Page 5: ...are isolated and may be ground referenced Figure 7 Dancer Electrical Connections 6 2 Sensor Setup The DFP or DFP 2 position sensor should be at the center of rotation when the dancer is halfway throu...

Page 6: ...achine stopped set the switch to This turns the integrator on 7 Run the machine near full roll and at a slow speed and use the pot to center the dancer Clockwise rotation of moves the dancer up toward...

Page 7: ...e dancer is overshooting To do this move the stable dancer away from its set position by pushing on the dancer by bumping the unwind rewind roll or by some similar means If the dancer goes past the se...

Page 8: ...tion 5 3 Voltage between terminals 20 and 22 should be greater than zero and should change as the DFP or DFP 2 is moved through its travel Remote tension potentiometer resistance is less than 10 kohms...

Page 9: ...not calibrated Follow the calibration procedure in section 6 3 Clutch Brake output full on or full off DFC 90 in PID mode and RUN STOP switch is not wired properly Verify RUN STOP switch wiring PID m...

Page 10: ...Residual Current Device Types A or B IEC755 Worst Case Fault Current 1 6 amp ac Inputs Signal DFP or DFP 2 Potentiometer 1 to 10 kohm watt minimum Tension Potentiometer 10 kohm minimum watt minimum R...

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