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EXTRON
OPERATIONS AND
MAINTENANCE MANUAL
SNAPPAC
D.C. MOTOR CONTROL
Notice:
All information, illustrations and specifications contained in this manual are based
the latest product information available at the time of publication. The right is
reserved to make changes at any time without notice. Copyright 1986, Extron
Company.
Table of Contents
Section
Page
1.0Introduction.............................................................................................................................1.
1.1Technical Data........................................................................................................................ 1.
2.0
Installation...................................................... 2.
3.0Operation and Adjustment Procedure.................................................................................3.
3.1Section
A: Basic Armature Feedback..................................................................................4.
3.1.1Introduction
3.1.2Description and Operation
3.1.3Adjustment Procedures
3.1.4Applicable Documents
3.2
Section B: Pulse Feedback................................................................................... 5.
3.2.1Introduction
3.2.2Description of Operation
3.2.3Adjustment Procedure
3.2.4Applicable Documents
3.3
Section C: Tachometer Feedback........................................................................6.
3.3.1Introduction
3.3.2Description of Operation
3.3.3Adjustment Procedure
3.3.4Applicable Documents
3.4
Section D: Instrument Follower Isolation Option............................................... 73.4.1Introduction
3.4.2Description of Operation
3.4.3Adjustment Procedure
3.4.4Applicable Documents
3.5
Section E: Start/Stop Option............................................................................... 8.
3.5.1Introduction
3.5.2Description of Operation
3.5.3Adjustment Procedure
3.5.4Applicable Documents
Continued
3.6
Section F: Reversing..............................................................................................8.
3.6.1Introduction
3.6.2Description of Operation
3.6.3Adjustment Procedure
3.6.4Applicable Documents
3.7
Section G: Run Control........................................................................................ 9.
3.7.1
Introduction
3.7.2
Description of Operation
3.7.3Adjustment Procedure
3.7.4Applicable Documents
4.0
Trouble Shooting Procedure..................................................................................10.
5.0
5.0.1
5.0.2
Replacement Parts..................................................................................................11.
Common Parts
Special Parts
5.1
5 .1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
Standard Option Cards......................................................................................... 12.
Pulse Feedback
Tachometer Feedback Card
Instrument Follower/Isolation Card
Start/Stop with Dynamic Braking
Reversing with Dynamic Braking
Run Control Card
6.0Schematics and Connection Diagrams................................................................................. 13.
6.1Schematic Diagram: 1/4-2 Hp............................................................................................. 14.
6.2Schematic Diagram: 3-5 Hp................................................................................................ 15.
6.3Schematic Diagram: Start/Stop Control 1/4-2 Hp........................................................... 16.
6.4Schematic Diagram: Start/Stop Control 3-5 Hp...............................................................17.
6.5Schematic Diagram: Run Control 1/4-2 Hp.......................................................................18.
6.6Schematic Diagram: Run Control 3-5 Hp.......................................................................... 19.
6.7Schematic Diagram: Reversing Control 1/4-2 Hp.............................................................. 20.
6.8Schematic Diagram: Reversing Control 3-5 Hp................................................................. 21.
6.9Schematic Diagram: Pulse Feedback Card....................................................................... 22.
6.10Schematic Diagram: Tach Feedback Card....................................................................... 23.
6.11Schematic Diagram: Instrument Follower....................................................................... 24.
7.0
Cross Reference (Model Number vs Features & Options).......................................25.
8.0Connection
8.1Connection
9.0
Diagrams: 1/4-2 Hp.........................................................................................26.
Diagrams: 3-5 Hp............................................................................................ 28.
Factory Service and Warranty Information....................................................... 30.
1.0 INTRODUCTION
This manual covers the single phase Snap-Pac series controls 1/4 HP through 5 HP These controls are complete motor
controls, which provide speed control for D C shunt-wound motors, as well as permanent magnet motors, from zero to full
motor speed Models 112, 113, and 114 cover Vi through 2 HP, and Models 115,116, and 117 cover 3 and 5 HP The standard SnapPac motor control voltage ratings are listed in Table 1
1.1
TECHNICAL DATA
Speed Range (controller)
Minimum Speed Adjust
20 1 maximum, Armature feedback
30 1 maximum, Pulse feedback 30 1
maximum, Tack feedback
0-30% base speed
Maximum Speed Adjust
75-100% of base speed
Full Torque Speed Range (controller and motor)
Continuous duty (Open and TEFC motors) 60% to 100% base speed
Continuous duty (TENV) 5-100% base speed
Speed Regulation (95% load change)
Transient Protection
MOV and RC suppressor
Input Voltage
115 VAC ± 10%
230 VAC ± 10%
± 2% base speed, Armature feedback
±1% base speed, Tachometer feedback
± Vi% base speed, Pulse feedback
Frequency
50/60
Ambient Temperature Range
0°C to 50°C
Load Inertia
Current Limit
Not more than motor inertia when referred
to motor shaft
10-150% of f u l l load
IR Compensation
Control Voltage to Operator's Station
24VDC
Adjustable to match motor
Arm
Volt
90 VDC
Armature
Current
5 amp
Field*
Voltage
100 VDC
Field
Current
2 amp
Max AC
Current
8 amp
112 113-114
3/4-1 HP 1 1 5
VAC
90 VDC
10 amp
100 VDC
2 amp
16 amp
112-113-1 14
1/2-1 HP 230
VAC
180 VDC
5 amp
200 VDC
2 amp
8 amp
1 12-113-1 14 1
1/2-2 HP 230
VAC
180 VDC
10 amp
200VDC
2 amp
1 6 amp
115-1 16-117
3-5 HP 230
VAC
180 VDC
25 amp
200VDC
2 amp
29 amp
Model
112-1 13-114
V A -V 2 HP 115
VAC
Fig. 1
Control Specification Chart
2.0 INSTALLATION
Before installing the motor, read the motor nameplate. Check the HP rating, armature voltage, and field voltage data. Make
sure that these ratings agree with the motor control identification. If the nameplate rating is different from control rating,
consult the factory before installing the motor.
The drive motor may be connected to the load through a gear reducer, belt or by direct coupling. When a motor is coupled
through a gear reducer, make certain the C flanges are mated properly. Connect the gear reducer according to the
manufacturer's instructions. If the motor is coupled to the load by belting, it is important that the sheaves be in line. Check belt
tightness. A belt that is too loose will result in excessive slippage. Direct coupling is best accomplished by using a flexible
coupling. A proper coupling will extend the life of the bearings in the motor.
Note: A properly connected, direct coupled load does not exert force on the motor shaft in any direction.
Refer to the connection diagrams or schematics furnished with the motor before connecting the motor to the control. P1 and
P2 leads are usually for built-in motor thermostats. S1 and S2 leads are for a stabilized shunt winding. It is best to leave
this disconnected. Motors with additional field leads marked F3 and F4 are for special field connections. Check motor
manufacturer supplied connection diagrams before operation.
The standard direction of the motor rotation is counter clockwise (CCW) looking at the end opposite the drive shaft. Extronsupplied motors, connected as shown in the connection diagrams, will rotate in the CCW direction.
The Snap-Pac should be mounted in a vertical position, allowing at least 4" clearance on all sides. Any other mounting
position should be avoided since the natural flow of air will be impeded with consequent overheating and possible
premature failure or reduced life of control components.
Local codes should be followed when installing the Snap-Pac. The circuit breaker that is provided is intended to protect
the control only. All signal lines should be isolated from all power lines to avoid noise pick-up.
Refer to the appropriate connection diagram provided with the control when making all connections to the motor control.
Note: the speed potentiometer is floating at armature potential on armature feedback drives. Caution should be used to
avoid grounding any of the connections on the armature feedback drives.
1.Recheck all control and motor connections before applying power to the control. Make sure all connections are correct and
tightly secured.
2.Set the speed potentiometer to zero.
3.Turn on the A.C. power.
4.On Start/stop or reversing models, depress the proper run button.
5.Slowly increase the speed potentiometer until the motor shaft turns. If the motor rotation is opposite to that desired, stop the
motor and turn off the A.C. power and interchange the two armature leads.
6.Restart the control and adjust the motor control as indicated in the following sections.
2.
3.0
OPERATION AND ADJUSTMENT PROCEDURE
The following sections outline standard operation and adjustment procedure for standard Snap-Pac
motor controllers. To determine which section applies, find the controller model number on the drive
nameplate. Refer to the following table.
If motor controller model doesn't correspond to the below key, it is a custom control. Literature that
applies to custom controls will be enclosed with the custom control at the time of shipment.
* It is recommended that all drives be fused with optional semi-conductor fusing for optimum
protection.
Semi Conductor Fuse Table
Hp
VAC Qty
Fuse
P/N
1/4-1
120
1
FWA20
5112-0101
Qty
.
1
1/2-2
240
2
FWX20
5112-0203
1
5122-0401
3-5
240
2
FWX60
5112-0207
2
5122-0500
.
Fuse Holder P/N
5122-0301
Applicable Section
11X-XXX
0 — A — Armature feedback
A — Armature feedback
E — Start/Stop with DB
2— B — Pulse feedback
3— C — Tachometer feedback
4— B — Pulse feedback
E — Start/Stop with DB
C — Tach feedback
E — Start/Stop with DB
5
—
A — Armature feedback
F — Reversing
6—
A — Armature feedback
D — Instrument follower
A — Armature feedback
8 — D — Instrument follower
E — Start/Stop with DB
A—
B—
C—
D—
A — Armature
feedback G — Run
control
B — Pulse
feedback G —
Run control
C — Tach
feedback G —
Run control
D — Instrument
follower G — Run
control
3.1
3.1.1
SECTION A: BASIC ARMATURE FEEDBACK
Introduction
The basic Snap-Pac D.C. motor controller is designed to control the speed of a D.C. motor by varying the applied armature
voltage. The controller consists of two printed circuit cards mounted on a heat sink with the power conversion module. The
printed circuit boards are held in place by a shroud that may contain an input power circuit breaker and speed setting
potentiometer.
3.1.2
Description and Operation
The power conversion module contains a full semi-conductor bridge with diodes in two legs and SCR's in the other two.
A.C. voltage is converted to D.C. by the bridge and the D.C. voltage level is controlled by controlling the phase angle firing of
the SCR's.
A commutating (free wheeling) diode is also included in the power module to provide a path for current during phase
back operation as well as helping minimize D.C. output ripple.
The SCR firing circuit controls the phase angle firing of the SCR's in response to signals from the regulator circuitry.
The regulator circuit compares a speed command (from the speed setting potentiometer) with the actual motor voltage level.
The resulting error signal is amplified and used to control the firing circuit.
A signal proportional to armature current is fed into the regulator to compensate for speed change due to load. A signal
proportional to armature current is also used in the current limit circuit. The current feedback signal is compared against
a current set point signal. If the current rises above the current limit set point, the SCR's are phased back to limit the current
to the set point.
3.1.3
Adjustment Procedures
The control has been factory-tested and adjusted, and should only require minor adjustment to meet specific requirements.
The following adjustments can be made with the motor at operating temperature, usually achieved within 30 minutes
from a cold start.
1.Maximum speed — With the speed adjust pot set at 100, adjust the max. speed pot for a motor speed of 1750 RPM;
2.Minimum speed — With the speed adjust pot set at 0, adjust the min. speed pot until the motor just stops.
Note: It may be necessary to readjust the max. speed pot.
3.Current Mm it — The current limit pot controls the current in a linear fashion from 1 0% to 1 50%, and is normally set for 1
20%
of the motor armature rating. If it is desired to control the current limit in order to protect the equipment, applythe maximum
load to the motor that will normally be encountered and turn the current limit pot down until the motor speed begins to drop
off, then increase the current limit 1/8 turn.
4.I.R. Compensation — This adjustment corrects for speed loss when the motor is loaded. With the speed adjust pot at 1
5,
measure the no-load speed of the motor, then load the motor and adjust the I.R. compensation until the no-load speed is
reached.
Note: Too much I.R. compensation can cause instability in the motor speed.
3.1.4
Applicable Documents
PD 1023-0100
4.
Schematic diagram
SECTION B: PULSE FEEDBACK
3.2.1
Introduction
Pulse feedback is a slide-in option for the basic Snap-Pac motor control. It consists of two matched printed circuit boards that are
plugged into the basic armature feedback control described in Section "A". The pulse feedback option provides improved speed
regulation by sensing actual motor RPM through the use of a pulse tach generator mounted on the motor shaft.
3.2.2
Description of Operation
The pulse feedback control circuitry is a full, closed loop amplifier that compares a speed command with an RPM feedback signal.
The output of the pulse feedback module is fed directly into the basic Snap-Pac armature regulator as a reference voltage
level via the slide pin connectors. A variable D.C. voltage from a speed setting potentiometer or other D.C. source is used as
a command reference. A pulse frequency from an Extron motor mounted pulse ring pickup or other suitable frequency source
is used as a feedback signal.
The pulse signal is converted from a frequency signal to an analog signal. This analog feedback signal is compared to the
reference command. The difference (error) is amplified and is used as the speed signal to the basic Snap-Pac armature feedback
drive. The output signal of the pulse feedback module is optically isolated from the armature bridge. The input A.C. to the pulse
feedback module is isolated via a step-down transformer.
The analog feedback signal is also amplified and brought out to the terminal strip and can be used with a D.C. 1 ma meter for
speed indication.
Shutdown circuitry is also included to allow total shutdown of the drive reference when using contactor Start/Stop, Run Control,
or reversing.
3.2.3
1.
2.
Adjustment Procedure
Adjustments on basic control card
a. High speed — not used
b. Low speed — not used
c. IR comp — should be set full CCW
d. Current limit — this sets the maximum current that the motor can draw. This adjustment is normally set at 1 20% of rated
motor armature current
Pulse feedback option adjustments
a. Maximum speed — sets the maximum motor speed when the speed potentiometer is at maximum
b. Minimum speed — sets the minimum motor speed when the speed potentiometer is at minimum
Note: The max. and min. adjustments interact to some degree; therefore, for best results it may be necessary to adjust
both several times until the desired results are obtained.
c. Stability — Sets the system stability. Increasing this adjustment CW will tighten the loop response. To make this
adjustment, turn this pot full CCW, then slowly turn it CW until the motor becomes unstable. Then back it off until the
motor stabilizes at all speeds.
d. Meter calibration — This adjustment is used to calibrate a speed indicating meter for 1 00% at motor base speed.
3.2.4
Applicable Documents
PD1023-0100
PC1023-0500
Schematic Diagram Basic Snap-Pac
Schematic Diagram Pulse Feedback
3.3
3.3.1
SECTION C: TACHOMETER FEEDBACK
Introduction
Tachometer feedback is a slide-in option for the basic Snap-Pac motor control. It consists of two matched printed circuit
boards that are plugged into the basic armature feedback control described in Section "A". The tachometer feedback option
provides improved speed regulation by sensing actual motor RPMthroughthe use of a direct current tachometer generator
mounted and coupled to the D.C. drive motor.
3.3.2
Description of Operation
The tachometer feedback circuitry is a full closed loop amplifier that compares a speed command with an RPM feedback signal.
The output of the tachometer feedback module is fed directly into the basic Snap-Pac armature regulator as a reference voltage
level via the slide pin connectors. A variable D.C. voltage from a speed setting potentiometer or other D.C. source is used as
a command reference.
A D.C. tachometer generator voltage is used as a feedback signal. The command and feedback voltages are amplified and
compared. The difference (error) is amplified and is used as the speed signal to the basic Snap-Pac armature feedback drive.
The output signal of the tachometer feedback module is electrically isolated from the armature bridge. The input A.C. to the
Tachometer feedback module is isolated via a step-down transformer.
The D.C. tachometer feedback signal is also amplified and brought out to the terminal strip and can be used with a D.C. 1 ma
meter for speed indication. Shutdown circuitry is included to allow total shutdown of the drive reference signal when using
contactor Start/Stop or Run Control.
3.3.3
1.
2.
Adjustment Procedure
Adjustments on basic control card
a. High speed — not used.
b. Low speed — not used.
c IR comp — should be set full CCW.
d. Current limit — this sets the maximum current that the motor can draw. This adjustment is normally set at 1 20% of rated
motor armature current.
Tachometer feedback option adjustments
a. Maximum speed — sets the maximum motor speed when the speed potentiometer is at maximum
b. Minimum speed — sets the minimum motor speed when the speed potentiometer is at minimum.
Note: The max. and min. adjustments interact to some degree; therefore, for best results it may be necessary to adjust
both several times until the desired results are obtained.
c. Stability — sets the system stability. Increasing this adjustment CW will tighten the loop response. To make this
adjustment, turn this pot full CCW, then slowly turn it CW until the motor becomes unstable. Then back it off until the
motor stabilizes at all speeds.
d. Meter calibration — This adjustment is used to calibrate a speed indicating meter for 100% at motor base speed.
3.3.4 Applicable Documents
PD1023-0100
PC1023-1100
6.
Schematic Basic Snap-Pac
Schematic Tachometer Feedback
3.4
3.4.1
SECTION D: INSTRUMENT FOLLOWER ISOLATION
OPTION
Introduction
Instrument follower is a slide-in option for the basic Snap-Pac motor control. It consists of two matched printed circuit boards
that are plugged into the basic armature feedback control described in Section "A". The instrument follower allows standard
Snap-Pac drives to be used with process control instrumentation. Standard process control signals of 1 -5 ma, 4-20 ma, and
10-50 ma can be used.
3.4.2
Description of Operation
The instrument follower circuitry is used as a signal conditioner to allow using process instrument current signals as reference
commands to the basic armature feedback Snap-Pac. Grounded or ungrounded signals of 1 -5 ma, 4-20 ma, or 1 0-50 ma are
converted to voltage signals in the input section. The resulting voltage signal is amplified and optically coupled to the output
section of the circuit.
The output signal of the circuit is used as the speed reference to the basic Snap-Pac motor control. The output signal of the
instrument follower is electrically isolated from the armature bridge. The input A.C. to the instrument follower module is
isolated via a step-down transformer.
The standard circuit also allows the standard Snap-Pac to follow any grounded or ungrounded voltage signal up to 7 volts D.C.
maximum.
3.4.3
Adjustment Procedure
1.
Adjustments on Basic Control Card
a. High speed — not used
b. Low speed — not used
c. IR comp — This adjustment corrects for speed loss when the motor is loaded. With the manual speed adjust pot at 1 5,
measure the no-load speed of the motor, then load the motor and adjust the IR compensation until the no load speed is
reached. If a manual speed adjust is not used, the same set-up procedure may be used by substituting an input signal
that is 1 5% of the maximum.
d. Current limit — The current limit adjustment sets the maximum current that the motor can draw. This adjustment is
normally set at 1 20% of rated motor armature current.
2.
Adjustments on instrument follower option
a. Min. speed — Adjusts minimum speed of drive
b. Max. speed — (Balance) — Adjusts maximum speed of drive.
3.4.4.
Applicable Documents
PD1023-0100
PC1023-1 200
Schematic Basic Snap-Pac
Schematic Instrument Follower
3.5
3.5.1
SECTION E: START/STOP OPTION
Introduction
Start/Stop with dynamic braking is a slide-in option to the Snap-Pac motor control. It consists of a printed circuit board and
relay assembly that is plugged into either the basic armature feedback control or the pulse feedback, tachometer
feedback or instrument follower option cards. The Start/Stop option allows remote operation of the control through the use
of push button operators as well as offering motor dynamic braking and under voltage lockout.
3.5.2
Description of Operation
The Start/Stop option consists of a full wave bridge rectifier that provides 24 VDC power from a stepped-down A.C. input
voltage. The 24 Volt supply is used to operate a pilot relay that provides a holding contact for remote operation as well as
a shutdown contact that is used to defeat the drive output when in the stop mode. A 2-pole, double throw power relay is used
to connect the D.C. motor armature with the control. When this relay is de-energized, a dynamic braking resistor is
connected across the armature of the D.C. motor to obtain braking of the D.C. motor The armature contactor may be 24
VDC or rated at A.C. supply voltage depending on the size of the drive. The dynamic braking resistors are sized to give
approximately 100% current at full speed with no more than 3 full speed stops per minute.
3.5.3
Adjustment Procedure
No adjustments are necessary.
3.5.4
Applicable Documents
PC1023-0300 schematic
Start/Stop 14-2
HP PC1053-0300 schematic
Start/Stop 35 HP
3.6 SECTION F: REVERSING
3.6.1
Introduction
Reversing with dynamic braking is a slide-in option to the Snap-Pac motor control. It consists of a printed circuit board and
relay assembly that is plugged into either the basic armature feedback control or the pulse feedback, tachometer
feedback or instrument follower option cards. The reversing option allows remote reversing operation through the use
of push button operators. Also included is motor dynamic braking and anti-plug circuitry.
3.6.2
Description of Operation
The reversing option consists of a full wave bridge rectifier that provides 24 V.D.C. power from a stepped-down A.C.
input voltage. The 24 volt supply is used to operate forward and reverse pilot relays as well as an anti-plug latching re lay.
The forward and reverse pilot relays provide holding contacts for the forward and reverse operator control circuitry, defeat
contacts to bring the dri ve o ut put to zeroifthe run contact is opened and contacts to engage and disengage the main forward
or reverse armature contactor.
The main forward and reverse contactors may be operated at 24 VDC or AC line voltage depending on the size of the
drive. Anti-plugging is obtained by sensing armature voltage and using the voltage level to inhibit the engagement of the
latching relay. The latching relay is a mechanically held, double coil device. Once the armature voltage has reached a low
level, the latching relay is enabled. If the forward relays are then actuated, the latching relay will be held in the forward
control circuit and lockout the reverse contactors. The drive will not reverse until the stop contact is opened, the armature
voltage comes to zero, and the reverse relays are energized. The latching relay would not be in the reverse position until the
reverse sequence of events occurs.
3.6.3
Adjustment Procedure
No adjustments are necessary
3.6.4
8.
Applicable Documents
PC1023-0400
Schematic reversing 1/4-2
HP PC1053-0400
Schematic reversing 3-5
HP
3.7
3.7.1
SECTION G: RUN CONTROL
Introduction
Run Control is a slide-in option to the Snap-Pac motor control. It consists of a printed circuit board that is plugged into either the
basic armature feedback control or the pulse feedback, tachometer feedback, or instrument follower option cards. The run
control allows remote operation of the control through the use of push button operators as well as offering under voltage
protection.
3.7.2
Description of Operation
The Run Control option consists of a full wave bridge rectifier that provides 24 VDC power from a stepped-down A.C. input
voltage. The 24 volt supply is used to operate a pilot relay that provides a holding contact for remote operation as well as a
shutdown contact that is used to defeat the drive output when in the "stop" mode.
3.7.3
Adjustment Procedure
No adjustments are necessary.
3.7.4
Applicable Documents
PC1023-0310 schematic
PC1053-0310 schematic
Run control 1/4-2 HP
Run control 3-5 HP
4.0
TROUBLE SHOOTING PROCEDURE
Most control failures are caused by improper connections, overloads, or improper protection from accumulation of dust dirt or
moisture. Dirt and dust deposits limit the transfer of heat away from the power semi-conductors; and moisture, usually
caused by either washdown or condensation, can cause short circuits, erratic operation, or insulation failure.
WARNING — HIGH VOLTAGE
Do not service or trouble shoot the SCR drive without exercising extreme caution.
The A.C. line should be disconnected before connecting test equipment such as oscilloscopes, voltmeters, or
ammeters to the SCR drive. Test instruments must not ha ve their chassis grounded while tests are being made.
The test equipment chassis will be "electrically hot" while connected during the test.
CIRC
UIT
BRE
AKE
R
TRIP
S
CHECK AC INPUT TO CONTROL
X
SHORTED MOTOR FIELD
X
CONT
ACTO
R
WILL
NOT
ENER
GIZE
CON
TRO
L
WILL
NOT
RUN
X
X
MOT
OR
WILL
NOT
MAINTAIN
SPEE
D
UNDE
R
LOAD
CONT
ROL
WILL
NOT
RUN
FULL
SPEED
X
X
X
X
X
X
X
X
X
IR COMP MISADJUSTED
GAIN MISADJUSTED
1
X
DEFECTIVE SCR MODULE
X
X
DEFECTIVE FIELD DIODE
X
X
IMPROPER WIRING TO MOTOR
X
X
DEFECTIVE MOTOR
X
X
IMPROPER WIRING TO
REMOTE STATION
X
X
X
X
X
X
X
X
DEFECTIVE CONTROL CARD
X
X
DEFECTIVE SPEED POT
X
X
X
X
X
X
X
X
X
MIN. SPEED POT MISADJUSTED
LOW LINE VOLTAGE
CONT
ROL
WILL
NOT
SHUT
OFF
WITH
SPEE
D
POT
X
CURRENT LIMIT MISADJUSTED
DEFECTIVE POWER BOARD
MOT
OR
"PUL
SAT
ES"
X
OPEN MOTOR FIELD
MOTOR OVERLOADED
CONT
ROL
RUNS
FULL
SPEE
D (NO
CONT
ROL)
X
X
X
X
5.0
REPLACEMENT PARTS
5.0.1
Parts common to all standard Snap-Pac Motor Controls
Description
Control Board
Speed Pot, 5K, 2
Watt
Pot Knob
5.0.2
Extron Part No
PC1028-0100
4752-0404
2421-0200
Parts special to all basic Snap-Pac Motor Controls
Model
112, 113, &114
1/4-1/2 Hp 115
VAC
Parts Description
Power Board
Power Module
Circuit Breaker
Extron Part No
PC1028-0201
4834-0803
5131-0102
112, 113 & 114
3/4-1 Hp 115
VAC
Power Board
Power Module
Circuit Breaker
PC1028-0202
4834-0803
5131-0104
112, 113 & 114
1/2-1 Hp 230
VAC
Power Board
Power Module
Circuit Breaker*
PC1028-0203
4834-0803
5131-0204
112, 113&114 1
1/ 2- 2 Hp 230
VAC
Power Board
Power Module
Circuit Breaker*
PC1028-0204
4834-0803
5131-0204
115, 116 & 117 3-5
Hp 230 VAC
Chassis or Nema 1
Power Board
Power Module
Circuit Breaker
PC 1058-0200
4834-0301
5132-0400
115, 116 & 117
3-5 Hp 230 VAC
Nema 12
Power Board
Power Module
Circuit Breaker
PC1058-0200
4834-0301
5132-0400
*Note: 230 VAC Breakers shown are 2pole. Older drives may have single pole
breakers. Single pole breaker part number is 5131-0104.
5.1 Standard Snap-Pac Slide-In Options
5.1.1
Pulse Feedback
VATO 1 HP
VAC
1
110
/2 to 2 HP
Side Control Card
Bottom Power
Card
PC 10280500
PC1028-1301
Side Control Card
Bottom Power
Card
PC10280500
PC10281302
230 VAC
3 to 5 HP
230 VAC Side Control
Card Bottom
Power Card
5.1.2
PC1028-0500
PC1058-1303
Tachometer Feedback
.
1/4 to 1 HP
110 VAC
Vi to 2 HP
Side Control Card
Bottom Power
Card
230 VAC
3 to 5 HP
230 VAC
Side Control
Card Bottom
Power Card
Side Control Card
Bottom Power
Card
PC10281100
PC10281301
PC10281100
PC10281302
PC10281100
PC10581303
5.1.3 Instrument Follower/Isolated Module
V4 to 1
HP
110
VAC
Side Control Card
Bottom Power
Card
Vi2to 2
HP
230 VAC
Side Control Card
Bottom Power
Card
230 VAC
3 to 5 HP
5.1.4
110VAC
' 230 VAC
230 VAC
PC10281200
PC10581213
Complete Assembly
Complete Assembly
Complete Assembly
PC1028-0301
PC1028-0302
PC1058-2000
Reversing with Dynamic Braking
1/4 to 1 HP
V2 to 2 HP
3 to 5 HP
5.1.6
PC10281200
PC10281212
Start/Stop with Dynamic Braking
V4 to 1 HP
y2 to 2 HP
3 to 5 HP
5.1.5
Side Control Card
Bottom Power
Card
PC10281200
PC10281211
110 VAC
230 VAC
230 VAC
Run Control
1
/4 to 1 HP
110
Complete Assembly
Complete Assembly
Complete Assembly
VAC
1/2
to2HP
PC1028-0401
PC1028-0402
PC1058-2100
230
VA
C
3 to 5 HP
VAC
12.
230
Complete
Assembly
Complete
Assembly
Complete
Assembly
Printed circuit cards sold in matched pairs only
PC1028-0303
PC1028-0304
PC10580300
6.0
SCHEMATICS AND CONNECTION DIAGRAMS
The following schematics and connection diagrams pertain to standard pre-engine&sed
Extron Snap-Pac motor controls with a six (6) digit model number.
If a control has a nine( 9) dg it model number or a ten(10)digit model number with an "M"
prefix, please refer to the last page of this manual for a listing of schematics and wiring
diagrams that pertain to the control. It is possible that some of the standard drawings in the
following section will pertain to custom controls.
Any drawings that cannot be found in the standard drawing section will be found loose in
the back of this manual.
14.
18.
20.
21
22.
24.
27
28.
29.
9.0 Factory Service and Warranty Information
Extron provides complete service for all products offered. Please contact your local Distributor or Representative
for Return Authorization Procedures.
A Return Authorization Number is required to process your unit quickly and return it to service. Service for units
beyond the warranty period is available at standard published rates. Quotes on service costs are available upon
request.
EXTRON COMPANY
WARRANTY
Extron warrants to the original purchaser all equipment and products manufactured by it and bearing its name to be free of defects in material and
workmanship under normal use and service for a period of twelve (12) months from date of purchase from Extron. This warranty is applicable only if the
Extron product and/or equipment is installed, operated and maintained in accordance with factory recommendations and procedures.
In the event the Extron product and/or equipment is found to be defective within the above-stated twelve (12) month period, Extron will repair or
replace defective parts if the product or equipment is shipped prepaid to Extron's factory and if such product and/or equipment is found by Extron's
inspection to be truly defective in workmanship or material. Extron will return-ship such repaired product and/or equipment prepaid within the
continental United States. If Extron's inspection does not disclose any defect in workmanship or material, repairs will be made at a reasonable charge.
THE WARRANTIES SET FORTH HEREIN ARE IN LIEU OF ANY AND ALL OTHER WARRANTIES EXPRESSED OR IMPLIED, INCLUDING THE
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PURPOSE AND THE BUYER ACKNOWLEDGES THAT NO OTHER REPRESENTATIONS
WERE MADE TO HIM OR RELIED UPON BY HIM WITH RESPECT TO THE QUALITY AND FUNCTION OF THE GOODS HEREIN SOLD.
LIMITATIONS OF LIABILITY
IN NO EVENT, WHETHER AS A RESULT OF BREACH OF CONTRACT, WARRANTY OR TORT (INCLUDING NEGLIGENCE), SHALL EXTRON OR ITS
SUPPLIERS BE LIABLE FOR ANY CONSEQUENTIAL OR INCIDENTAL DAMAGES, INCLUDING FOR PURPOSES OF ILLUSTRATION, BUT NOT FOR
LIMITATION, LOSS OF PROFITS OR REVENUES, LOSS OF USE OF EQUIPMENT FURNISHED OR SERVICED BY EXTRON, DAMAGE TO, OR LOSS OF USE
OF, ANY ASSOCIATED EQUIPMENT, COST OF CAPITAL, COST OF SUBSTITUTE OR REPLACEMENT PRODUCTS, FACILITIES, SERVICE OR POWER,
DOWN TIME COSTS, OR CLAIMS OF THE CUSTOMER'S CUSTOMER FOR SUCH DAMAGES. IF THE CUSTOMER TRANSFERS TITLE TO OR LEASES THE
PRODUCTS SOLD OR SERVICED HEREUNDER TO ANY THIRD PARTY, THE CUSTOMER SHALL OBTAIN FROM SUCH THIRD PARTY A PROVISION
AFFORDING TO THE COMPANY AND ITS SUPPLIERS THE PROTECTION OF THE PRECEDING SENTENCE, AND THE CUSTOMER WILL DEFEND AND
HOLD EXTRON HARMLESS FROM ANY CLAIMS OF SUCH THIRD PARTIES.
EXTRON'S LIABILITY ON ANY CLAIM OF ANY KIND (INCLUDING NEGLIGENCE) FOR ANY LOSS OR DAMAGE ARISING OUT OF OR RESULTING FROM
THIS AGREEMENT, OR FROM THE PERFORMANCE OR BREACH THEREOF, OR FROM THE PRODUCTS OR SERVICES FURNISHED HEREUNDER,
SHALL IN NO CASE EXCEED THE PRICE OFTHE SPECIFIC PRODUCT OR SERVICE WHICH GIVES RISE TO THE CLAIM. ALL SUCH LIABILITY SHALL
TERMINATE UPON THE EXPIRATION OF THE WARRANTY PERIOD OF TWELVE ( 12) MONTHS, AS HEREINABOVE STATED.
The furnishing of advice or other assistance without separate compensation therefore will not subject the company to any liability, either in
contract, warranty, tort (including negligence), or otherwise.
Each of the foregoing paragraphs in this article will apply to the full extent permitted by law. The invalidity, in whole or part, of any paragraph will
not affect the remainder of such paragraph or any other paragraph.
5735 LINDSAY ST • Minneapolis, MN 55422 (763) 544-4197 • Fax:
(763) 544-4419