Dynamatic 4050 User manual

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Instruction Sheet
IS-539-11 revised 2019
15-533-1011 Panel Mount 4000 (3.5 A Controller)
15-351-1011 Standard Enclosure 4000 (3.5 A Controller)
15-539-0011 Panel Mount 4050 (8 A Controller)
15-553-0011 Standard Enclosure 4050 (8 A Controller)
Model 4000 and 4050 with Auto Manual Low Signal Follower
External Ratio Adjustment
Introduction
These instructions relate specifically to the
model 4000 and 4050 controllers assembled for
Speed Control with Auto/Manual Low Signal
Follower (Ext Ratio) modification. Connection
diagram, schematic diagram, switch
programming, plug wiring connection,
adjustment procedure and recommended spare
parts list for these specific assemblies are
contained in this Instruction Sheet. Any
differences between these two controllers are
clearly noted. Use Instruction Manual IM-
130006-83XX with this Instruction Sheet for
complete installation, operation and
maintenance instructions.
Caution: Above ground electrical potentials can
be hazardous. Always disconnect electrical
power before working on the controller.
*Heat sink assembly, HS1, and its wiring only
apply to the Model 4050 controller. These parts
are not supplied on Model 4000 controllers. The
parts are mounted on the 15-530-5 main 4000
boards.
Model 4050 Controller Panel with Auto/Manual Low
Signal Follower (Ext. Ratio) Modification board 15-446-5
15-539-11
Drive Source International/Dynamatic
7900 Durand Ave Bldg 3 Sturtevant, WI 53177
800-548-2169 • [email protected]
www.Dynamatic.com

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INTRODUCTION.................................................................................................................... 1
Connection diagram for Standard Enclosure 4000 Controller................................................................3
Schematic Diagram for 4000 Controller .................................................................................................4
Connection Diagram for 4000 Panel Mount and 4050 Controllers ........................................................5
Schematic Diagram for 4050 Controller .................................................................................................6
Low Signal Follower Modification PCB 15-446-5/0102 ..........................................................................6
Modification PCB Mounting ..................................................................................................................... 7
GENERAL DESCRIPTION........................................................................................................ 7
Visual Inspection...................................................................................................................................... 7
Preliminary Adjustments.......................................................................................................................... 7
Operator Controls .......................................................................................................................................7
Main PCB 15-530-5 or 15-530-6..................................................................................................................8
Trimpot Illustration:................................................................................................................................8
Low Signal Follower Mod PCB.....................................................................................................................9
Adjustment Procedure ............................................................................................................................. 9
Zero Adjust R19 with LED monitor..............................................................................................................9
Zero Adjust R19, Alternate Method............................................................................................................9
Max Speed/Volts R21- ................................................................................................................................9
Max Speed/Volts R21 with LED monitor.....................................................................................................9
Max Speed/Volts R21, Alternate Methods ...............................................................................................10
Time Constant (TC) Adjust ........................................................................................................................10
Current Feedback R20*- ...........................................................................................................................10
Accel Rate R18 ..........................................................................................................................................11
Velocity Damping R22*-............................................................................................................................11
Automatic Operation ............................................................................................................................. 11
Circuit Diagram for Input Signals ..........................................................................................................12
Greater than 7.5 Vdc ............................................................................................................................12
Renewal Parts List.................................................................................................................................. 14

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Connection diagram for Standard Enclosure 4000 Controller
ED-58211

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Schematic Diagram for 4000 Controller
Note 1: This equipment must be installed in compliance with National Electrical Code and all applicable
state and local codes.
Note 2: Transformer may be supplied as a winding in the ac motor or as a separate item. Standard
connections to winding in mechanical unit and to separate transformer are both shown above.
Note 3: To eliminate linear acceleration on manual speed, open contact 4 on SW9.
Note 4: To add linear acceleration to Auto, close contact 1 on SW9
Note 5: For alternate input signals, program contacts SW*-1, 2, 3, & 4 as shown above

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Connection Diagram for 4000 Panel Mount and 4050 Controllers
ED-56811

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Schematic Diagram for 4050 Controller
Low Signal Follower Modification PCB 15-446-5/0102

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Modification PCB Mounting
If you have purchased a complete controller this section may be passed over and you may proceed to
General Description.
1. Place the Main PCB in front of you with the long dimension in a horizontal position and the
terminal strip to the left.
2. Remove the DIP switch by pulling it straight out of the receptacle, RECP 1. Then, peel the adhesive-
backed label off the other half of RECP 1.
3. Insert the arrow-type locking head of the four nylon stand-offs supplied into the four 0.188”
diameter holes in the main PCB and press in. The tabs will snap out to lock the stand-offs
permanently in position.
4. Hold the modification PCB assembly over the stand-offs with the ribbon connector toward you
and insert the ribbon connector plug into RECP 1. Be careful to see that all 16 pins are started
properly into the receptacle before pressing the plug in.
5. Align the holes in the modification PCB assembly over the stand-offs and press over the tapered
posts until the locking flanges snap out to lock the board in position.
General Description
This modification circuit accepts a transducer output signal (current or voltage) and conditions it to
produce a dc reference voltage for the controller. The circuit is adjusted for a specific linear drive speed
range to be obtained for a given transducer output range.
The modification can also be placed in the Manual Mode whereby the drive speed is controlled by an
external Manual Speed potentiometer.
Linear acceleration may be selected for Auto, Manual or both modes of operation.
Visual Inspection
1. Before proceeding to the preliminary adjustments, check the controller for any damage that may
have occurred during shipment, such as loose connections and damaged wire or components.
2. Check all interconnecting wires for conformance to connection diagram and schematic as supplied
in the instruction sheet.
3. Check the Operator’s controls (which are supplied by customer) to see if they are connected
properly per the connection diagram. This includes the Manual Speed pot R5, the Manual/Auto
selector switch and the start and Stop pushbutton controls.
Preliminary Adjustments
Perform the following preliminary adjustments (with no power applied to the controller)
1. Operator Controls (Supplied by customer unless specified)
a. Set the Manual Speed potentiometer to 0% (Full CCW)
b. Set the Auto/Manual selector switch to the Manual position.

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c. Note location of Start and Stop pushbuttons.
2. Main PCB 15-530-5 or 15-530-6
The pots used are screwdriver adjust single turn pots. Do not use a screwdriver with a blade width
exceeding 1/8 inch.
a. Set the Accel Rate potentiometer R18 to 100% (Full CW)
b. Set the Zero Adjust potentiometer R19 to 0% (Full CCW)
c. Set the Max Speed/Volts potentiometer R21 to 0% (Full CCW)
d. Set the Velocity Damping potentiometer R22 as follows (see trimpot illustration):
e. Set the Time Constant (TC) Adjust potentiometer R26 as follows (see trimpot illustration):
Mechanical Unit Model Numbers
Velocity
Damping
Setting
Models AC/Fractional
Models EC/AS
Fractional
14
0%
181/182/184/186
18/21
50%
214/216/254/256
25
75%
280/320/360/440
27
75%
Mechanical Unit Model Numbers
TC Adjust
Setting
Models AC/Fractional
Models EC/AS
FHP/181/182
0%
184/186/214
14/18
50%
216/254/256/280
21
30%
320/360/440
25/27
100%
*Typical product number stamped on mechanical unit nameplate:
1. A1-100214-0053, specific mechanical model is AC-214
2. B2-100210-0008, specific mechanical model is AS-21
Trimpot Illustration:

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f. Set the Current Feedback potentiometer R20 to 0% (Full CCW).
g. Put jumper J1 in Norm position.
3. Low Signal Follower Mod PCB 15-446-5
a. Set the Bias potentiometer R20 to 0% (Full CCW)
b. Set the programming switches SW8 and SW9 as indicated in the programming chart on the
connection diagram. The linear acceleration may be selected for Auto, Manual or both modes
of operation.
Adjustment Procedure
Caution: To avoid personal injury or damage to the test equipment remove power before connecting or
disconnecting test equipment.
The Model 4000 and 4050 controllers contain an LED status monitor which provides a visual means of
setting the maximum speed and minimum bias. This LED set up along with an alternate method is given
below.
1. Turn ON the power to the drive and start the ac motor.
2. Start the controller with the Start pushbutton. Note the location of the Stop pushbutton.
3. Zero Adjust R19 with LED monitor- Slowly increase the Zero Adjust Potentiometer R19 CW
while monitoring the LED, D22. When controller output is turned ON or clutch voltage is turned
ON (or the drive shaft begins to rotate), the LED should start flashing. Now just back off slowly
until flashing stops.
Zero Adjust R19, Alternate Method- This adjustment can be set to provide zero rpm or some
minimum speed greater than zero, as required by the machine operating requirements.
a. For zero rpm, turn the Zero Adjust potentiometer R19 CW until the output shaft just begins
to turn. Then, back off the control until the output shaft just stops turning. Stop and start the
controller a few times to be sure the drive shaft does not rotate.
b. For a minimum speed greater than zero, the LED cannot be used. Turn the Zero Adjust
potentiometer CW until the desired speed is attained. For a accurate setting use a tachometer
or stroboscope.
4. Max Speed/Volts R21-This adjustment can be set to limit drive speed to its rated maximum or
to a slower speed as required by the machine process. An LED status monitor has been provided
on the main board to allow you to set the maximum speed without the use of a tachometer,
stroboscope or voltmeter. However, an alternate method of setup using this equipment is given
to set the maximum speed point. The tachometer or stroboscope will give an accurate rpm setting
while the use of a voltmeter will give only an approximate speed setting. This is because the
voltmeter is measuring generator voltage instead of actual output rpm.
Max Speed/Volts R21 with LED monitor Set the Manual Speed potentiometer R5 at 100% (Full
CW). The drive should be loaded for best results. Set the Max Speed/Volts potentiometer R21 at
100% (Full CW). Caution: drive will go to top speed. The LED should be out when the drive is at
top speed. With the LED out, slowly turn the Max/Speed/Volts potentiometer R21 CCW until the
LED lights. This indicates that the speed of the drive is in the regulating range of the controller.

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The clutch voltage should drop below 45V. This will be approximately the maximum rated speed
of the drive. The maximum speed point setting will vary with different mechanical units.
There are two other conditions for which the LED will be out besides the drive being set for zero
speed or running wide open above the regulating range. These are whenever the “E” relay is
deenergized (the drive is stopped), or due to a wiring error, ground or some malfunction of the
controller itself.
Max Speed/Volts R21, Alternate Methods-
a. To set maximum rated speed with a tach or stroboscope: turn the Manual Speed
potentiometer R5 to 100% (Full CW). Allow the drive to accelerate to full speed, Turn the Max
Speed/Volts pot CW until the rated speed indicated is the same as the speed listed on the
nameplate of the mechanical unit.
b. To set approximate maximum speed with a voltmeter, connect a voltmeter (60 Vac scale)
across terminals G1 and G2. Turn the Manual Speed pot R5 to 100% (Full CW). Allow the drive
to accelerate to full speed. With the drive at full speed, turn the Max Speed/Volts pot CW
until the meter reading ceases to rise. Back off the adjustment (CCW) until the meter reading
just begins to drop. This is the point of maximum speed.
c. To set a maximum speed that is less than rated maximum speed requires the use of a
tachometer or stroboscope indicator. This cannot be accomplished with the LED status
monitor. Turn the Manual Speed potentiometer to 100% (Full CW). Allow the drive to
accelerate to full speed, slowly increase Max Speed/Volts potentiometer setting CW until the
desired speed is indicated.
5. Since there may be some interaction between the Zero Adjust and the Max Speed/Volts,
particularly if the minimum speed is other than zero, repeat steps 3 and 4 until the desired speeds
are obtained for both the zero and max positions of the Manual Speed pot.
6. Time Constant (TC) Adjust R26-The TC Adjust is used to set current feedback by using coil
voltage and a variable RC combination to simulate the different coil time constants of various size
drives. A trimpot illustration is provided to facilitate the setting of this control. Sufficient range
has been provided for drive sizes from fractional through 20 hp for the 4000 controller and up to
125 hp for the 4050 controller. Set you TC control appropriately for your individual drive size as
shown in Preliminary Adjustments.
Settings are not critical and so may be “tuned” for each drive. High inertia applications can benefit
from a higher than normal setting.
7. Current Feedback R20*-Normal operation will not require use of this potentiometer. Certain
applications are best met with a negative current feedback responses which is slower in settling
and less likely to overshoot at low rpms. There are some low inertia, light load, linear acceleration
applications that may also benefit from improved low-end linearity with current feedback
damping. If you have one of these applications, remove Jumper J1 from the Normal position and