Worldwide WDC CONTROL Series User manual

WDC CONTROL SERIES
LT84 (0220)
Phone [phone]
Fax [phone]
www.worldwideelectric.com
Instruction Manual
Variable Speed DC Control
A-5-3546F
WDCCONT WDCCONTREV

1
WARRANTY
WorldWideElectricCorporation(WWE)warrantsitsproductstobefreefromdefectsinmaterialandworkmanship.Theexclusive
remedy for this warranty is WWE factory replacement of any part or parts of such product which shall within 12 months after
delivery to the purchaser be returned to WWE factory with all transportation charges prepaid and which WWE determines to its
satisfaction to be defective.This warranty shall not extend to defects in assembly by other than WWE or to any article which has
been repaired or altered by other thanWWE or to any article whichWWE determines has been subjected to improper use.WWE
assumes no responsibility for the design characteristics of any unit or its operation in any circuit or assembly. This warranty is
in lieu of all other warranties, express or implied; all other liabilities or obligations on the part of WWE, including consequential
damages, are hereby expressly excluded.
NOTE:Carefully check the control for shipping damage.Report any damage to the carrier immediately.Do not attempt to operate
the drive if visible damage is evident to either the circuit or to the electronic components.
Allinformationcontainedinthismanualisintendedtobecorrect,howeverinformationanddatainthismanualaresubjecttochange
withoutnotice.WWEmakesno warrantyof anykind withregardto thisinformationordata.Further,WWEis not responsibleforany
omissions or errors or consequential damage caused by the user of the product.WWE reserves the right to make manufacturing
changes which may not be included in this manual. WARNING
Improper installation or operation of this control may cause injury to personnel or control failure.The control must be installed
inaccordancewith local,state,and national safetycodes.Make certain that the powersupplyis disconnected beforeattempting
to service or remove any components!!! If the power disconnect point is out of sight, lock it in disconnected position and tag
to prevent unexpected application of power. Only a qualified electrician or service personnel should perform any electrical
troubleshooting or maintenance. At no time should circuit continuity be checked by shorting terminals with a screwdriver or
other metal device.
WARRANTY ............................................................................................................................................................................... 1
INTRODUCTION ........................................................................................................................................................................ 2
CONTROL FEATURES .............................................................................................................................................................. 2
HEATSINK DIMENSIONS .......................................................................................................................................................... 2
WDCCONT HOOK-UP DIAGRAM ............................................................................................................................................. 3
WDCCONTREV HOOK-UP DIAGRAM ......................................................................................................................................4
WIRING PROCEDURE & FUSING ............................................................................................................................................ 5
TERMINAL STRIPWIRING ....................................................................................................................................................... 5
START-UP PROCEDURE & ADJUSTMENTS ........................................................................................................................... 6
TRIMPOT ADJUSTMENT PROCEDURE & SETTING CHART ................................................................................................. 7
CONTROL MODIFICATIONS .................................................................................................................................................... 8
IN CASE OF DIFFICULTY ......................................................................................................................................................... 8
SPECIFICATIONS &TYPICAL MOTOR CURRENTS ............................................................................................................... 9
WDC SERIES PARTS PLACEMENT & LIST ............................................................................................................................ 9
WDC SERIES SCHEMATIC ..................................................................................................................................................... 10
TABLE OF CONTENTS

2
INTRODUCTION
• TheWDC Series variable speed DC motor control is a versatile, general purpose control rated to 2 HP.
• The control has a dual voltage input (may accommodate either 120 or 240 VAC).It is available with an adjustable HP
range of 1/8 thru 1 HP for 120VAC, and 1/4 thru 2 HP for 240 VAC input.
• Designed for DC Permanent Magnet, Shunt Wound, and some Universal (AC/DC) motors in the above horsepower ranges.
• IncomingACvoltageisalsoconvertedtoadjustablefullwaverectifiedDCvoltage(viaapackagedbridge)tooperatetheDC
motor. Also, a full wave field voltage is provided for shunt wound motors (see page 4 for voltages).
• The control incorporates transient voltage protection with adjustable current limit and an AC fuse for protection.It
features adjustable minimum and maximum speeds along with adjustable acceleration and IR Compensation.Tach feedback
is accomplished thru a connection to a pin (P2) on the printed circuit board.
• The WDC Series has a linear acceleration/deceleration ramp.
• The control also has a barrier type terminal strip for all power and control wiring.
• The enclosed model uses a gasketed cover assembly that is rated NEMA 4/12.
• cULus Listed.
HEATSINK DIMENSIONS
Allow 3.50" for height clearance, 7.40" for overall length.
MIN. SPEED (minimum speed) - Allows adjustment of the motor speed when the speedpot is set at minimum (CCW). This
permits the user to eliminate the “deadband” on the main speed control permitting zero calibration. Clockwise rotation of “MIN”
trimpot increases minimum motor speed.
MAX.SPEED (maximum speed) - provides for adjustment of the motor speed when the speedpot is set at maximum (CW).This
permits the user to eliminate the top end “deadband”, which will provide full speed at maximum rotation. Rotation of the “MAX”
trimpot in the clockwise direction increases the maximum motor speed.
ACCEL (acceleration) - allows adjustment of the motor acceleration from a minimum of 0.5 seconds to approximately 8.0 sec-
onds.The deceleration time depends on the ACCEL setting.For DECEL time equal to ACCEL time, see -17B option.
IR COMP (speed regulation) - adjusts the control output to compensate for speed changes caused by varying motor loads. As
the motor load is increased, IR COMP increases the voltage output of the control. Clockwise rotation of the “IR COMP” trimpot
will increase compensation.
CUR. LIM. (current limit) - provides protection from excessive armature current by limiting the maximum armature current the
control can provide.This enables adjustment of the maximum torque the motor can deliver.Current limit adjustment (CUR.LIM.)
is set at 125% of the rated motor current (torque) based on horsepower. Clockwise rotation of the “CUR. LIM.” trimpot increases
the current (torque) the control will provide.
TERMINAL STRIP - allows for connection of AC lines, motor leads, motor field (if needed), and speed potentiometer.
CONTROL FEATURES
5.500
7.000
.750
5.125
7/32 SLOTS (4)
TYP. .350 DEEP
5.530

3
WARNING
1. Be sure the control housing is properly grounded.
2. Arm connections must not be switched or broken while the control is on. Serious damage may result.
3. For non-speedpot applications, the input connections to the Lo-Wiper-Hi leads must not be grounded. Serious
control damage may result from a grounded input.
INSIDE OF COVER
SPEEDPOT
DPST SWITCH
(black)
(black
or brown)
Endplate with holes for 1/2" NPT conduit
-11 -9-8-4 -5 -6 -7-1 -2 -3
P2
Inhibit
Pin
P1
Pot Lo
Wiper
Pot Hi
-Arm
+Arm
P1_6
P1_7
AC
AC
motor
armature ac input
field*
chassis
ground
Switched AC Switched AC
Min Max Accel IR Comp Cur. Lim. LO (orange)
HI (white)
WIPER (red)
(white)
(white
or yellow)
-10
WDCCONT HOOK-UP DIAGRAM (SEE PAGE 4 FOR WDCCONTREV)
* Used for shunt wound motors only! No connection is made to these terminals when using permanent magnet motors.

P3-1 P3-2 P1-8 P1-9
P1-4 P1-5 P1-10 P1-11
AC INPUTARM INPUT
-7
-6
-3
-2
-1
P1
4PDT SWITCH
P3
-4
-11
-10
-5
-2
-1
-9
-8
ARM
ARM
AC
AC
black
white
brown
yellow
red
blue
purple
or brown
gray or
yellow
brown
yellow
purple
or brown
gray or
yellow
Permitsreversing of motor.Thisis accomplished usinga4PDTblockedcenterswitch.When switchedbetweenthe forward/reverse
positions, a delay is encountered due to the blocked center position, which protects the control from any voltage that may be at
the armature terminals.The center position is OFF/NEUTRAL.
THE MOTOR MUST COMETO A COMPLETE STOP BEFORE CHANGING DIRECTIONS. IFTHE MOTOR DOES NOT COME
TO A COMPLETE STOP, SERIOUS DAMAGETOTHE CONTROL MAY RESULT.BYPASS OFTHE CENTER BLOCK OFTHE
SWITCH MAY RESULT IN DAMAGETOTHE CONTROL.
A 4PDT blocked center-off switch is factory installed into the cover assembly. The two position terminal strip (P3) is factory in-
stalled on the main board (below).The output on P3 is the switched (FWD/REV) output and the output of terminals P1-4 and
P1-5 is not switched.
WDCCONTREV HOOK-UP DIAGRAM
INSIDE OF COVER
SPEEDPOT
DPST SWITCH
(black)
Endplate with holes for 1/2" NPT conduit
-11
-9-8-4 -5 -6 -7-1 -2 -3
P2
Inhibit
Pin
P1
Pot Lo
Wiper
Pot Hi
P1_6
P1_7
AC
AC
motor
armature ac input
field*
chassis
ground
Switched AC Switched AC
Min Max Accel IR Comp Cur. Lim. LO (orange)
HI (white)
WIPER (red)
(white)
-10
-Arm
+Arm
(brown)
(yellow)
(purple)
(gray)
(blue)
(red)
-1 -2
P3
* Used for shunt wound motors only! No connection is made to these terminals when using permanent magnet motors.
Wiring Diagram
Hook-Up Diagram
4

5
P1-7 (-FIELD) Connect minus (-) Field wire of SHUNT WOUND MOTOR.
P1-8 VERY IMPORTANT !!! Refer to“FUSING”, shown above.
P1-9 (AC) 120VAC - Connect incoming hot AC (black wire) to P1-9 and Neutral (white wire) to P1-8.
Connect ground (green wire) to Chassis Ground, as shown in diagram - page 3.
240VAC - Connect both hot sides, one to P1-8 and one to P1-9.Also connect ground wire to
Chassis Ground.
P1-10 VERY IMPORTANT !!! Refer to“FUSING”, shown above.
P1-11 (SWITCHED AC) No connections to P1-10 and P1-11.This is for switched AC output.
Note Wiring Hook-Up diagram (page 3).Pilot lights can be connected between these
terminals. The voltage present at these terminals is AC input voltage.
FIELDVOLTAGETABLE
VAC INPUT 120 240
VDC FIELD 100 200
}
}
P1-1 (SPEEDPOT LO) Connects to low side (orange wire) of the 5K speedpot (normally the CCW end).This input is raised
and lowered by the MIN.trimpot.
P1-2 (SPEEDPOTWIPER) Connects to wiper (red wire) of the 5K speedpot (center lead).
P1-3 (SPEEDPOT HI) Connects to high side (white wire) of the 5K speedpot (CW end).This is internal +12 volts.For start-
stop applications, the connection between this terminal and speedpot HI can be opened and closed by a SPST switch.
NOTE: INPUT MUST NOT BE GROUNDED!!
P1-4 (-ARM) Connects to minus (-) Armature wire (A2) on motor.
P1-5 (+ARM) Connects to plus (+) Armature wire (A1) on motor.0-90 VDC for 120 VAC input OR 0-180 VDC for 240 VAC
input. See “SPECIFICATIONS” for output rating.
P1-6 (+FIELD) DO NOT USE for permanent magnet motor.This supplies +Field voltage for a SHUNT WOUND MOTOR. Refer
to Field Voltage table.For motors with dual voltage field (i.e.50/100V or 100/200V), make sure highest value is connected.
TheWDC Series has an 11 position terminal strip for ease of connection.
TERMINAL STRIPWIRING
FUSING
The control is provided with a fuse in AC line 1 (P1-11). This fuse is sized to open in the event of a shorted armature or if an
armature line is shorted to earth ground.As long as 120 VAC input is connected properly, there is no additional fusing needed.
For 240VAC applications, an external fuse may be used in AC line 2 (P1-10).This fuse should be a Bussman ABC10 or LittleFuse
314-010.This added fuse will provide protection on both AC legs to the 250G. If you desire not to fuse both legs, the fuse in the
control will open in the event of excessive armature currents.
Note: AC current is determined by motor characteristics.In some applications it may be necessary to increase fuse value.
WIRING PROCEDURE
1. Size all wires which carry armature or line current to handle currents as specified by national, state, and/or local codes. All
other wires may be #18 AWG or smaller as permitted by local code.
2. Separate control wires from all the Armature and AC line wires when routed in conduits or in wire trays.The enclosed
version has two threaded holes (1/2" NPT) in one endplate, located near the terminal strip, for this purpose.

6
The trimpot adjustments, MIN, MAX, IR COMP, and CUR LIM are checked at the factory using a typical motor at 240 VAC input.
Use the TRIMPOT SETTING CHART on page 6 to preset the trimpots for the proper setting for your application.The remaining
trimpot - ACCEL, is a variable acceleration and should be set for your particular application.
The trimpot chart is approximate.The chart is valid when using the speedpot or a 0-10/12 VDC input signal to set speed.
Theseadjustmentsarepermanent;periodicreadjustmentisnormallynot needed.Operationofthe controlbeyond±10%ofnormal
line voltage could result in readjustments.
ADJUSTMENTS
WARNING: ALL POWER MUST BETURNED OFF BEFORE PROCEEDING !!!
1. Recheck all wiring. Accidental grounds, loose or pinched wires on armature or speedpot wires may damage the control
when power is applied.
2. Check to see that incoming service is of correct voltage.
3. Turn speedpot to zero (fully CCW).
4. Turn power on and advance speedpot while observing motor.
WARNING: POWER MUST BE OFF BEFORE STEP 5 CAN BE ACCOMPLISHED!
5. If motor rotation is incorrect, turn power off at external disconnect and reverse +ARM and -ARM connections.
6. Check for satisfactory operation throughout the speed range.
7. If operation is satisfactory, no readjustments are needed.
8. If instability or surging is observed, or maximum speed is higher than desired, see section “TRIMPOT ADJUSTMENT”.
9. For other problems, consult section “IN CASE OF DIFFICULTY”.
START-UP PROCEDURE
Warning: Do not attempt to perform a Hi-Pot test across AC lines with control in circuit.
This will result in immediate or long term damage to the control.

7
1. CW rotation increases time of acceleration.
ALLOWS ADJUSTMENT OF ACCELERA-
TION by user.
1. TURN DRIVE POWER OFF !!
2. Connect a DC ammeter between A1 on the motor and
+ARM on the control.This is in series with the motor.
3. Turn power on.
4. Set speedpot at the 50% position.
5. Set CUR LIM trimpot fully CCW.
6. Apply friction braking to the motor shaft until motor is
stalled (zero RPM).
7. While motor is stalled, set current at 125% of rated
nameplate motor armature current by adjusting the
CUR LIM trimpot.
LIMITSDCMOTORARMATURECURRENT
(Torque) to prevent damage to the motor
or control.The current limit is set for the
rated motor current. CW rotation of this
trimpot increases the armature current
(or torque produced).
1. Set speedpot at 50%,
2. Observe motor speed at no load condition.
3. Apply a full load to the motor.
4. Adjust IR COMP trimpot CW to obtain the same motor
speed as with no load.
CALIBRATESSPEEDREGULATION-Pro-
vides a means of improving motor speed
regulationinthearmaturefeedbackmode.
If a slowdown due to load change is of no
concern, rotate this trimpot fully CCW.
1. Set speedpot to zero (fully CCW).
2. Rotate MIN trimpot CW until motor rotates.
3. Slowly rotate MIN trimpot CCW until motor stops.NOTE:
If motor rotation at zero is desired, rotate MIN trimpot
CW until desired minimum speed is reached.
SETS MINIMUM MOTOR SPEED when
speedpot is set at zero. CW rotation will
increase minimum motor speed.
1. TURN DRIVE POWER OFF!!
2. Connect DC Voltmeter: + to +ARM, - to -ARM.
3. Set meter voltage range: (90VDC or 180VDC).
4. Turn power on. Set speedpot at 100%.
5. Adjust MAX trimpot to rated motor armature voltage as
shown on meter.
NOTE:A tachometer or strobe may be used in lieu of a meter.
Follow above steps, except adjust MAX trimpot to rated
motor base speed indicated by tachometer or strobe.
SETS MAXIMUM MOTOR SPEED when
speedpotissetatmaximum(100%rotation
CW).CWrotationofMAXtrimpotincreases
maximum motor speed.
TRIMPOT FUNCTION ADJUSTMENT
MAX
MIN
IR
COMP.
CUR.
LIM.
ACCEL
TRIMPOT ADJUSTMENT PROCEDURE
1/4
1/3
1/2
3/4
1.0
MIN MAX ACCEL IR CUR.
LIM. H.P.
1/8
INPUT
VOLTAGE OUTPUT
VOLTAGE
120VAC
120VAC
120VAC
120VAC
120VAC
120VAC
MIN MAX ACCEL IR H.P. INPUT
VOLTAGE OUTPUT
VOLTAGE
CUR.
LIM.
0-90VDC
0-90VDC
0-90VDC
0-90VDC
0-90VDC
1/4
1/2
3/4
1.0
1.5
2.0
240VAC
240VAC
240VAC
240VAC
240VAC
240VAC
0-180VDC
0-180VDC
0-180VDC
0-180VDC
0-180VDC
0-180VDC
0-90VDC
TRIMPOT SETTING CHART
These settings apply when using a 5000WMaster Speedpot.
This trimpot chart is approximate. Use it in conjunction with the Adjustment Procedures.

8
IN CASE OF DIFFICULTY
If a newly installed control will not operate, it is possible that a terminal or connection is loose. Check to make sure that all con-
nections are secure and correct. If control still doesn't operate, refer to the following chart.
- replace fuse
- install proper service
- adjust speedpot CW to start
- replace motor brushes
- check that motor or load is connected
to armature terminals
- check that speedpot low wire is connected
- check - should be above 108V
- reduce load
- replace motor brushes
- see ADJUSTMENT PROCEDURE
- see ADJUSTMENT PROCEDURE
- see ADJUSTMENT PROCEDURE
- current must be greater than 150 mA D.C.
- see ADJUSTMENT PROCEDURE
- reduce speed
- check - should be above 108V
- reduce load
- replace
- replace
- callWorldWide Distributor or Representative
- checkTERMINAL STRIP WIRING for
correct wiring instructions (note AC line
connection in particular)
- check wiring
- callWorldWide Distributor or Representative
Motor doesn't operate
Armature output voltage
cannot be adjusted,output
is a constant DC level
Motor stalls, or runs very
slowly with speedpot
turned fully CW
Motor hunts
Repeated fuse blowing
Motor runs but will not
stop
- blown fuse
- incorrect or no power source
- speedpot set at zero
- worn motor brushes
- no motor or load connected
- speedpot low connection open
- low voltage
- overload condition
- worn motor brushes
- max speed set incorrectly
- too much IR Comp.
- motor is in current limit
- motor not pulling enough current
- max trimpot set too high
- motor speed is above rated speed
- low voltage
- overload condition
- worn motor brushes
- defective motor bearings
- defective electrical component
- incorrect wiring (enclosed version)
- defective wiring
- defective component
PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION(S)
If control still will not operate, consult your WorldWide Electric Distributor or Representative.
Two pot operation is done using two 10K
Ohm speed potentiometers in parallel (both
HI's to P1-3, both LO's to P1-1). The
WIPER is switched using a SPDT switch.
TWO SPEED OPERATION A DPDT switch is used to inhibit the control and to connect the
DBR. Typical values for the DBR (dynamic brake resistor) are 5
Ohms for 120V, 10 Ohms for 240V (both 35W to 50W). Note that
motor horsepower, inertia, and cycle time effect sizing of the DBR.
NOTE: This modification cannot be used with the -17B option.
DYNAMIC BRAKING
-2
-1
P1
W
LO
HI
MOTOR DYNAMIC
BRAKE
RESISTOR
-2
-1
-3
WHI
LO WHI LO
P1
HI
SPDT
TWO 10K SPEEDPOTS
-4
-3
P2
INHIBIT
-5
CONTROL MODIFICATIONS
DPDT SWITCH (N.C.)

9
SPECIFICATIONS
AC input voltage .................................................................................................................................. ±10% of rated line voltage
Acceleration ........................................................................................................................ 0.5 to 8.0 seconds (note -17B option)
Amps - DC output ................................................................................................................................ 150 mA to 10.8 Amps D.C.
Controller overload capacity ......................................................................................................................... 150% for one minute
Current limit trimpot range ...........................................................................................................................1.0 to 15.0 Amps D.C.
Deceleration (dependent on acceleration time setting) .......................................................................... .06 to .80 second range
Dimensions and weight:
TYPICAL MOTOR CURRENTS
WDC SERIES PARTS PLACEMENT & LIST
RESISTORS
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
15K 8W
2.7K
2.7K
1.2M
180K
82K
470K
15K
250K (ACCEL)
5K SPEEDPOT*
10K
5K (MIN)
470K
300K
5K (C.L.)
4.7K
390K
4.7K
150K
NOTE: ALL RESISTORS 1/2W UNLESS SPECIFIED
* CUSTOMER WIRED SPEEDPOT
DIODES
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
1N4005
1N4005
1N914B
1N5242B
L512FY131
L512FY131
L512FY131
1N914B
1N4005
1N5233B
ACTIVE DEVICES
Q1
Q2
Q3
Q4
Q5
Q6
2N6027
3052 MOC
L512FY131
L512FY131
LM324N IC
275V G-MOV
MISC. PARTS
F1
H1
JU1
JU2
P1
P2
10 AMP FUSE (Bussman ABC or Little Fuse 314
Series ceramic fuses)
S-8201-1X FUSE HOLDER
1.75" - 16GA. SOLID INS.WIRE
2.50" - 16GA. SOLID INS.WIRE
11 POS.TERMINAL STRIP
1/4" SPADE PIN TERMINAL
CAPACITORS
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
10uf 35V
.01uf 100V
.001uf 1KV
.033uf 400V
.1uf 50V
22uf 16V
.1uf 50V
.001uf 1KV
.22uf 250V
.01uf 100V
.01uf 100V
.068uf 250V
(across-the-line)
Q1
P1-1
Q5
D1
D8
C6
C1
R28
C5
C2
Q2
R37
Q6
R12
P1-2 P1-3 P1-4 P1-5 P1-6 P1-7 P1-8 P1-9 P1-10
R22 R9 R23 R15
D2
D9
D4
D10
R1
R29
R30
R31
R21
C10
R32
R8
R4
R17
R20
C3
R19 R27
R36
C8
R35
R2
R5
R6
R7
C7
C9
R34
C11 R33 R18
R14
R13
D3
R11
R16
R3
R25
R26
P1-11
F1
JU2
H1
R24
JU1
GENTRON PKG.
D5, D6, D7, Q3, Q4
P2
C4
C12
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
1K
1K
50K (MAX)
100W(IR)
.01W5W
390W
390W
1K
20K 1/4W
10K
180K
390K
47K
470K
100K
470W
91K
1W
Drive service factor ................................................................................................................................................................... 1.0
Efficiency ..................................................................................................................................................................... 85% typical
Input frequency ....................................................................................................................................................... 50 or 60 Hertz
Max. trimpot speed range ................................................................................................................. 66% to 110% of base speed
Min. trimpot speed range .............................................................................................................. 0% to 30% of maximum speed
Minimum external impedance (pot hi to pot low) .................................................................................................................... 5KW
Power devices ....................................................................................................................................... packaged full wave bridge
Shunt field voltage .........................................................100VDC for 120VAC input; 200VDC for 240VAC input; 1 amp maximum
Speed control ......................................................................... via 5K ohms 2W linear potentiometer or 0-10VDC isolated signal
Speed range ........................................................................................................................................................................... 50:1
Speed regulation ............................................................................................................................................ ±1% of base speed
Temperature range ............................................................................................................. -10oto 45oC. ambient (15oto 115oF.)
Transient protection ............................................................................................................................................................ G-Mov
Type ramp of accel/decel ...................................................................................................................................................... linear
ENGLISH
METRIC
5.53"
140mm
7.25"
184mm
3.50"
89mm
25.50 oz.
723 grams
WEIGHT
HEIGHT
LENGTH
WIDTH
3.50
2.70
1.80
1.40
1/4
Horsepower
Typical AC Amps (120VAC)
Typical Arm Amps (120VAC)
Typical AC Amps (240VAC)
Typical Arm Amps (240VAC)
4.40
3.40
2.20
1.70
1/3 6.50
5.00
3.30
2.50
1/2 9.30
7.20
4.80
3.70
3/4 13.20
10.20
6.50
5.00
1.0 -----
-----
9.70
7.50
1.5 -----
-----
12.90
9.90
2.0

10
WDC SERIES SCHEMATIC
ALL RESISTORS 1/2W UNLESS NOTED OTHERWISE
Q2 .................................. 3052 MOC Q3, Q4, D5, D6, D7 ....... L512FY131 GENTRON Q5 .................................. LM324N IC F1 * ................................ BUSS ABC-10 or LITTLEFUSE 314010
NOTES:
WIPER
P1-2
+12V
9
10
8
+
-
5 6
7
+
-
R30
180K
ACCEL
R9
250K
R29
10K
C10
.01uf
100V
R33
470K
R34
100K
C9
.22uf
250V
Q5-2
Q5-3
R31
390K
LO
P1-1
HI
P1-3
R35
470
OHM
MIN
R12
5K
R32
47K
REMOTE
SPEEDPOT
R10
5K
+12V
13 12
14
+
-
Q5-4
4
11
3 2
1
+
-
Q5-1
+12V
A
AC2P1-11
B
Q4
L512F
Q3
L512F R25
390 OHM
F1 *
R27
1K
R26
390 OHM
+ARM
P1-5
-ARM
P1-4
MOTOR
R19
150K
R20
1K
R21
1K
MAX
R22
50K
R17
390K
+TACH
D7
L512F
R24
.01 OHM
5W
R8
15K
-FIELD
R7
470K
R11
10K
D3
1N914B
C7
.1uf
50V
R4
1.2M
C5
.1uf
50V
R6
82K
R5
180K
C4
.033uf
400V
C2
.01uf
100V
C6
22uf
16V
R18
4.7K
R16
4.7K
R13
470K
IR COMP.
R23
100 OHM
CUR. LIM.
R15
5K
R14
300K
D5
L512F D6
L512F
B
A
Q1
2N6027
C1
10uf
35V
D4
1N5242B
D8
1N914B
R1
15K
8W
R2
2.7K
P1-6
D2
1N4005
B
D1
1N4005
A
+FIELD
P1-7
SENSE RES.
P2
AC1
P1-10
Q6
275V
G-MOV
JU1
C3
.001uf
1KV
R3
2.7K
1 2
Q2-1
3052 MOC
4 6
R36
91K
C8
.001uf
1KV
Q2-2
3052
MOC
D10
1N5233B
D9
1N4005
C11
.01uf
100V
R28
20K 1%
1/4W
+12V
+12V
SPARE
P1-9
SPARE
P1-8
R37
1 OHM
JU2
+12V
C12
.068uf
250V