Dynamatic 4000 User manual

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Instruction Sheet
IS-539-14 revised 2019
15-533-1014 Panel Mount 4000 (4.3 A Controller)
15-535-1014 Standard Enclosure 4000 (4.3 A Controller)
15-539-0014 Panel Mount 4050 (8 A Controller)
15-540-0014 Standard Enclosure 4050 (8 A Controller)
Model 4000 and 4050 with Torque Speed
15-539-14
Introduction:
These instructions relate specifically to the
following Model 4000 and 4050 controllers
which are assembled for Speed Control with
the Torque Limit 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-13006-83XX with
this instruction 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
apply only to the Model 4050 controllers.
These parts are not supplied on Model 4000
controllers. The parts are mounted on the
15-530-5 main 4000 board.
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
Torque Limit Modification PCB 15-444-2 7
Modification PCB Mounting 7
General Description 7
Preliminary Adjustments 8
Main PCB 15-530-5 or 15-530-6 8
Figure: Trimpot Illustration 8
Torque Limit Mod PCB 15-444-2 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 9
Max Speed/Volts R21, Alternate Methods 10
Time Constant (TC) adjust R26 10
Current Feedback R20*- 10
Accel Rate R18 11
Velocity Damping R22* 11
HI Damping R20 11
Torque Limit PCB 15-444-2 11
Torque Limit PCB 15-444-2 12
Renewal Parts List 13

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Connection Diagram for Standard Enclosure 4000 Controller
ED-58214/A
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: Values shown are typical. See BOM for actual values.

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Schematic Diagram for 4000 Controller

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Connection Diagram for 4000 Panel Mount and 4050 Controllers
ED-56814/A
*See page three for notes and description of symbols

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Schematic Diagram for 4050 Controller

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Torque Limit Modification PCB 15-444-2
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
For some variable speed drive application, it is necessary to limit the torque available to a machine in
order to prevent damage to the machine itself or its process. The Torque Limit modification provides an
“override” feedback signal which indirectly limits the induction motor torque (current) to a preset

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maximum value. This limit can be used to prevent the motor breakover torque from being reached during
a condition such as drive output shaft “lock-up” or the period when a large system inertia is being
accelerated. The adjustment range is from 50 to 150% of rated motor torque.
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 Run Speed potentiometer R5 to 0% (Full CCW)
b. 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)
Figure: Trimpot Illustration
*Typical product number stamped on mechanical unit
nameplate:
A1-100214-0053, Specific mechanical model is AC-214
B2-100210-0008, Specific mechanical model is AS-21
f. Set the Current Feedback potentiometer
R20 to 0% (Full CCW)
Mechanical Unit*
Velocity
Damping
Mechanical Unit*
TC
Adjust
AC/ACM/ACS/PD/VT
Fractional Hp
Models EC/AS
AC/ACM/ACS/PD/VT
Fractional Hp
Models EC/AS
Fractional Hp
14/121/140
0%
FHP/181/182
-
0%
181/182/184/186
18/21/132/160/180/210
50%
184/186/214
14/18/112/132/140/180
15%
214/216/254/256
25/27/180/225/250/280
75%
216/254/256/280
21/160/210
30%
280/320/360/440
320/360/440
75%
320/360/440
25/27/180/225/250/280/
320/360/440
100%

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3. Torque Limit Mod PCB 15-444-2
a. Set the Torque Limit Damping potentiometer R18 at 50% CW.
b. Set the Torque Limit potentiometer R19 at 50% CW (this setting is approximately 150% of
rated motor torque)
c. Set HI Damping potentiometer R20 to 0% (Full CCW)
d. Check the drive nameplate for motor hp, voltage and current ratings. Set the programming
switches and jumpers as indicated in Table 1 on the connection diagram for your rated motor
current
4. Place a clamp on ammeter on one lead of the ac motor
Adjustment Procedure
Caution: To avoid personal injury or damage to the test equipment remove power before connecting ok
disconnection test equipment
The Model 4000 and 4050 controllers contain an LED status monitor which provides a visual means of
setting the maximum speed and zero adjust. 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 the
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 on 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 an 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 with out 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 Run Speed potentiometer R5 at 100% (Full CW).
Caution: Drive will go full 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 up. This

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indicates that the speed of the drive is in the regulating range of the controller. 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 differed 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 Run Speed potentiometer
R5 to 100% (Full CW). Allow the drive to accelerate to full speed, turn to 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 Run 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 Run Speed potentiometer to 100% (Full CW). Allow the drive to accelerate
to full speed. With the drive at 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 Run 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 though 20 hp for the 4000 controller and up to 125 hp for
the 4050 controller. Set your 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 response 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

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place it in the Increased position. Adjust current feedback R20 as required to obtain desired drive
response.
*See basic 4000/4050 manual for a more detailed description of this adjustment.
8. Accel Rate R18- The purpose of Linear Acceleration is to slow down drive response to an increase
in command. Without Linear Accel control, the drive will respond to operator speed adjustments
very quickly, limited only by the torque capacity of the drive. With the Linear Accel circuit, the
output of the controller is linear with respect to time. This circuit is adjustable from 3 to 90
seconds. When set at the slowest acceleration rate, the drive will take 90 seconds to accelerate
from zero to rated speed, following a linear ramp. When less than rated speed is set, this time
required to reach top speed is proportionally less.
The Linear Acceleration circuit may be activated or deactivated by setting the programming
switches as indicated on the programming chart on the connection diagram. To set the Accel Rate:
stop the controller with the Stop pushbutton. Turn the Run Speed potentiometer to 100% (Full
CW). With the drive at a complete stop, push the Start pushbutton, and time the interval required
for the drive to accelerate from zero to full speed. Adjust the Accel Rate potentiometer R18 CCW
for a slower accel rate, or CW for a faster accel rate.
Note: Only the Acceleration Rate is adjustable. The response of the controller to a reduced command is
instantaneous. The response of the drive to a decrease in command is a function of drive system load and
inertia.
9. Velocity Damping R22*- This potentiometer is used to match the controller response to the drive
response (drive response is a function of the clutch coil time constant and system inertia) The
proper setting for this adjustment depends upon the drive size and total load inertia.
See Preliminary Adjustments. If instability (speed control becomes erratic) occurs at any setting
increase (turn CW) slightly until the speed becomes stable.
*See basic 4000/4050 manual for a more detailed description of this adjustment.
10. HI Damping R20- This pot is located on the Torque Limit modification board. It is used for
applications, such as stamping presses, where the load inertia is greater than 5 to 10 times the
drive inertia. In these cases, turn the Velocity Damping pot R22 on the main board to zero (Full
CCW). Now adjust the HI Damping pot R20 on the modification board until the proper response
is achieved (neither oscillatory not sluggish). If, however, maximum CW is attained and the system
remain oscillatory, further damping may be obtained from R22 on the main board. The main PCB
Velocity Damping pot R22 has about 75% of the damping range that the HI Damping pot R20 has
on the modification
11. Torque Limit PCB 15-444-2 (Normal Load)
a. Apply a normal load on the mechanical unit driven by the clutch.

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b. Monitor the motor current. Since current is proportional to torque, check your nameplate for
the rated motor current to determine to desired torque limit. Example- If your drive is rated
at 10 amps, and you want to limit the torque (150% of 10 amperes is 15 amperes), start the
drive and note the maximum current on the ac ammeter during acceleration. If the current is
less than 150% of rated motor torque, increase the Torque Limit setting R19 CW. If the current
rating is too high, decrease the Torque Limit setting CCW. Stop the unit and repeat the Start
Up. Check on the ac ammeter during acceleration. If the motor current during acceleration
never reaches 150% of rated motor current, increase the load and repeat current monitoring.
c. When the clutch is being torque limited, decrease the setting of the Torque Damping
potentiometer R18 CCW until instability (hunting) develops. Then increase the setting CW
until stability is attained. Recheck the Torque Limit setting as described in step 11b and
readjust if necessary.
12. Torque Limit PCB 15-444-2 (If normal load cannot be applied)
a. Apply a load to the motor and note the motor current (IR) (a load of 50% of full load or more
is desirable)
b. Check the motor nameplate for full load current (IF) of the motor.
c. Connect a voltmeter across terminals 1 and 2 measure the voltage (VR) at a motor current of
IR.
d. Calculate what the voltage would be across terminals 1 and 2 at full load:
 = ()× ()

VF = Current xfmr output voltage at full load
VR = Current xfmr output voltage at reduced load
IF = Motor current at full load
IR = Motor current at reduced load
e. Disconnect the leads to terminals 1 and 2 on 15-444-2 Modification board and connect a
variac.
f. Adjust the variac for VF and adjust the Torque Limit pot until the output speed of the drive
just begins to decrease. Increasing the output of the variac slightly will cause the speed of the
drive to decrease sharply. When making this adjustment DO NOT exceed 75 volts out of the
variac.
g. Torque Limit Damping- Follow the procedure outlined in step 11c. Load must be applied, and
the circuit must be limiting torque to make this adjustment.

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Renewal Parts List for Standard 4000 & 4050 Controllers with Torque Speed
Qty
Part Number
Description
Legend
Model 4000 Controllers
15-530-0005 Main PCB Assembly **
1
27-123-0001
Mini-Jumper
J1
*2
32-018-4091
Fuse, 4 Amp, 250 V
FU1, 2
*1
53-398-0001
Relay, 4pdt, plug-in
E
15-533-1014 Panel Mount
1
15-530-0005
Main PCB (Refer to PCB parts list above)
*1
15-444-0002
Torque Limit PCB assembly
4
36-298-0010
Circuit board support
15-551-1014 Standard Enclosure
1
15-530-5
Main PCB (Refer to PCB parts list above)
*1
15-444-0002
Torque Limit PCB assembly
4
36-298-0010
Circuit board support
Model 4050 Controllers
15-530-0006 Main PCB Assembly **
1
27-123-0001
Mini Jumper
J1
*2
32-028-0100
Fuse, 10 Amp, 250 V
FU1, 2
*1
53-398-0001
Relay, 4pdt, plug-in
E
15-539-14 Panel Mount
1
15-530-0006
Main PCB (Refer to PCB parts list above)
*1
15-444-0002
Torque Limit PCB assembly
1
15-529-0019
Heat sink assembly, incl. Q1 & D3
4
36-298-0010
Circuit board support
15-553-0014 Standard Enclosure
1
15-539-0014
Panel assembly (Refer to Panel Mount parts list above)
*Denotes minimum spare parts **Denotes suggested spares when downtime is critical

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Drive Source International/Dynamatic
7900 Durand Ave Bldg 3 Sturtevant, WI 53177
800-548-2169 •[email protected]
www.Dynamatic.com