Maxcess MAGPOWR DFC-90 Manuel utilisateur

MAGPOWR DFC-90

Instruction Manual

Dancer-Follower Arm Control

90VDC

MI 850A265 1 G

CONTENTS

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MAGPOWR DFC-90

MI 850A265 1 G

INTRODUCTION 1-1

About these operating instructions ...................................................................... 1-1

Product overview .................................................................................................. 1-2

Follower arm/dancer options ............................................................................... 1-2

INSTALLATION 2-1

SETUP 3-1

FOLLOWER ARM APPLICATIONS 4-1

Electrical connections........................................................................................... 4-1

Sensor setup ........................................................................................................ 4-1

Control setup ....................................................................................................... 4-2

Operation............................................................................................................. 4-4

DANCER APPLICATIONS 5-1

Electrical connections........................................................................................... 5-1

Sensor setup ........................................................................................................ 5-2

Dancer control setup and tuning.......................................................................... 5-3

Optional dancer optimization............................................................................... 5-5

TROUBLESHOOTING 6-1

Follower arm applications .................................................................................... 6-1

Dancer applications.............................................................................................. 6-2

SPECIFICATIONS 7-1

SERVICE 7-1

Maintenance......................................................................................................... 7-1

Replacement parts ............................................................................................... 7-1

1-1

INTRODUCTION

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MAGPOWR DFC-90

MI 850A265 1 G

About these

operating

instructions

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.

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

is available on our website or by calling the number on the back of

this publication.

Language

These are the original instructions, written in English.

1-2

INTRODUCTION

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MAGPOWR DFC-90

MI 850A265 1 G

Product overview

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.

Follower arm/

dancer options

The DFC-90 is factory adjusted to provide full reverse current

with 0 VDC input. If some other current is desired with 0 VDC

input, the minimum current potentiometer may be adjusted by

cutting out the hole shown on the label and then using a trimpot

adjustment tool.

Modifying this setting will cause the clutch/brake drag torque to

be higher than expected and is not recommended.

2-1

INSTALLATION

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MAGPOWR DFC-90

MI 850A265 1 G

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 75 mm [3.0 inches].

Figure 1. Enclosure dimensions

6.18 [157.0mm]2.30 [58.4mm]

1.39 [35.2mm] 3.38 [85.9mm]

3-1

SETUP

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MAGPOWR DFC-90

MI 850A265 1 G

Setup

1. Remove the enclosure top by inserting a flat blade screwdriver

under the retaining tabs in the base (See Figure 2).

2. Set the JP1 current range selection jumpers to the range

appropriate for the clutch/brake connected to the DFC-90

(See Figure 3 for current range settings). The factory setting is

1/8 A range.

3. Replace the enclosure top.

Figure 2. Enclosure top removal

Figure 3. JP1 current settings

7 1

JP1

4-1

FOLLOWER ARM APPLICATIONS

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MAGPOWR DFC-90

MI 850A265 1 G

Follower arm

applications

Electrical connections

Connections required for the basic follower arm system:

115 VAC power input

90 VDC output for clutch/brake

DFP or DFP-2 roll diameter sensor

10kΩtension potentiometer

The clutch/brake output and the remote meter output are not

isolated from the AC line and must not be ground referenced.

The control inputs are isolated and may be ground referenced.

See Figure 4.

Sensor setup

The DFP or DFP-2 position sensor should be at the center of

rotation when the follower arm is halfway through its travel. This

is an approximate adjustment and is intended to center the

sensor position to allow maximum rotation in both directions

during operation. (See Figure 4.)

Figure 4. Follower arm setup

(continued)

FULL ROLL DIAMETER

CORE DIAMETER

DFP

4-2

FOLLOWER ARM APPLICATIONS

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MAGPOWR DFC-90

MI 850A265 1 G

Sensor setup

(continued)

DFP

Install the DFP sensor so that its keyway is pointing towards the

top cover when the follower arm is half way through its travel.

DFP-2

To find the electrical center point of pot rotation, use a digital

multi-meter type ohm meter to measure from the white wire

(wiper) to the red or black wire. Turn the potentiometer shaft

until the meter reads 500Ω. Install the DFP-2 sensor so that at

the 500Ω meter reading, the follower arm is halfway through its

travel.

Figure 5. Follower arm electrical connections

Control setup

The control adjustments marked with an underline on the label

are the only ones needed for follower arm adjustment Stop Time

and Stop Multiplier apply to all operating modes and are not

distinctively marked. (See Figure 6 and settings on next page.)

INCREASING

DFP OR DFP2

1817

STOP

RUN

( OPEN FOR RUN )

INCREASING

10K

DIAMETER

TENSION

OPEN FOR RUN

RUN/STOP

L1 OUTPUT METER

L2 + -

90V 1mA POSITION

SHIELD +-

1 2 3 4 5 6 7 23

VAC

115

-+ 24 25 26

TENSION

SHIELD

19 20 21

+22

OPTIONAL OTHERWISE)

ALLOWED IN

(OPTIONAL)

CLUTCH/

BRAKE

METER

REMOTE

0-1 madc

D.C. OUTPUT

115 vac

50/60 Hz

SWITCH NOT

(REQUIRED FOR

STOP MULTIPLIER,

4-3

FOLLOWER ARM APPLICATIONS

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MAGPOWR DFC-90

MI 850A265 1 G

Control setup

(continued)

Figure 6. Control adjustments

1. Set the following switch and 22-turn potentiometers to the

settings given below:

Fswitch PD

ZERO full counter-clockwise

FULL full clockwise

Dfull counter-clockwise

CORE full counter-clockwise

STOP TIME full counter-clockwise

STOP MULT full counter-clockwise

2. Set the external TENSION pot full clockwise.

3. Position the follower arm on an empty core.

4. Adjust the CORE pot to obtain zero on the remote meter.

5. Adjust the ZERO pot until the meter just starts to increase, and

then reverse adjustment direction to just return the meter to

zero.

6. From published torque versus current curves adjust the CORE

pot for the desired output current at core.

(Example: y mADC to provide xx ft.-lb. at core)

7. Place the follower arm at the full roll position, and adjust the

FULL pot to the desired output current at full roll.

Setup is complete, and the DFC-90 is ready for operation.

(continued)

4-4

FOLLOWER ARM APPLICATIONS

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MAGPOWR DFC-90

MI 850A265 1 G

Control setup

(continued)

Optional adjustments

Stop Multiplier and Stop Time

Use the STOP MULT pot to increase the torque while the machine

is stopping. The increased torque is applied when the RUN/STOP

input is closed (terminals 17 and 18). Rotate the STOP TIME pot to

adjust the length of time the increased torque is applied. The

STOPPED indicator illuminates when the Stop Time expires.

Operation

Adjust tension with the external 10kΩtension pot.

Adjust rewind taper with the FULL pot. The tension will decrease

as the roll diameter increases without changing the remote

TENSION pot setting. Counter-clockwise rotation of the FULL pot

will decrease the tension at full roll, thereby increasing the

amount of taper.

Stop multiplier function

Rotate the STOP MULT pot clockwise to increase the stopping

torque.

Rotate the STOP TIME pot clockwise to increase the time that the

stopping torque is applied. The STOP TIME may be adjusted from

0.2 to 60 seconds.

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