Where This Kit is Used You can use this kit to install a snubber board on the SCR assemblyour drive.
What This Kit Contains This kit contains a snubber board assembly and these instructionsSCR assembly testing and replacement information is included inthese instructions.
How to Use These Instructions To install a snubber board on your drive:
1. Determine the rating of the drive, refer to “Drive and OptionIdentification” on page I-7.
2. Access the SCR assembly, refer to “SCR Assembly Access” opage I-11.
3. Install the snubber board, refer to “Snubber Board Installation”on page I-20.
If your drive is not working correctly, refer to “SCR and DiodeAssembly Test” on page I-23.
Safety Precautions
!ATTENTION: Some printed circuit boards and drivecomponents may contain hazardous voltage levels.Remove and lock out power before you disconnect orreconnect wires, and before you remove or replace fuseand circuit boards. Verify bus voltage by measuring thevoltage between the Negative Capacitor Bus and bothends of all fuses. An open fuse does not show voltageacross both ends of the fuse. Failure to measure voltagat both ends of the fuses may result in death or seriouinjury. Refer to Figure I-6. Do not attempt to service thedrive until the bus voltage has discharged to zero volts
!ATTENTION: Potentially fatal voltages may resultfrom improper usage of oscilloscope and other testequipment. The oscilloscope chassis may be at apotentially fatal voltage if not properly grounded. If anoscilloscope is used to measure high voltage waveformuse only a dual channel oscilloscope in the differentiamode with X 100 probes. It is recommended that theoscilloscope be used in the A minus B Quasi-differentiamode with the oscilloscope chassis correctly groundeto an earth ground.
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Electrostatic Discharge Precautions
Electrostatic discharge generated by static electricity can damagecomplimentary metallic oxide semiconductor devices on variousdrive boards. It is recommended that you perform these procedureguard against this type of damage when circuit boards are removeinstalled:
• Wear a wrist-type grounding strap that is grounded to the drivechassis.
• Attach the wrist strap to ground before removing the new circuboard from the conductive packet.
• Remove boards from the drive and immediately insert them inttheir conductive packets.
Torque Sequence When mounting components to a drive’s heat sink,component-fastener torque sequences and tolerances are crucialcomponent-to-heat sink heat dissipation.
The following illustrates temporary and final tightening sequences fcomponents fastened to a heat sink using two, four, and six screwTemporary torque is 1/4 (25%) of final torque. The numericillustration labels are for your assistance. Drive components do nocarry these labels.
!ATTENTION: This assembly contains parts and subassemblies that are sensitive to electrostatic dischargStatic control precautions are required when servicingthis assembly. Component damage may result if youignore electrostatic discharge control procedures. If yoare not familiar with static control procedures, referenceAllen-Bradley Publication 8000-4.5.2, GuardingAgainst Electrostatic Damage, or any other applicableESD protection handbook.
!ATTENTION: Component can be damaged if thetemporary tightening procedure is not performed tospecification.
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I-5
Figure I-1Two-Point Mounting
Figure I-2Four-Point Mounting
Figure I-3Six-Point Mounting
Important: Do not exceed 0.5 Newton-meters (4 lb-in.) or initialtorque of all six screws.
AB0906
1 2
1 2
2 1
Two-Point Mounting
Temporary Tighten
Final Tighten
AB0903
1
4
3
2
1 2 3 4
4 3 2 1
Four-Point Mounting
Temporary Tighten
Final Tighten
AB0902
Six-Point Mounting
Temporary Tighten to 0.5 N-m (4 lb-in.)
Final Tighten to 3 N-m (26 lb-in.)
654
123
2 5 3 6 1 4
2 5 3 6 1 4
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Product Identification Drive Nameplate Location
The drive nameplate is located on the face of the Main Control Boamounting plate. The drive nameplate contains the drive’s catalognumber and other important drive information. Reference the catanumber when ordering replacement parts.
Figure I-4Drive Nameplate Location
AB0929
Nameplate located on bottom of PC Board
Mounting Frame
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Drive and Option Identification 1336 FORCE Drives
The following is an explanation of the catalog numbering system fo1336 FORCE Common Bus AC Drives and options. The catalognumber is coded to identify the drive power rating and can be founon the drive shipping carton and nameplate.
The following is an explanation of the catalog numbering system fo1336 IMPACT Common Bus AC Drives and options. The catalognumber is coded to identify the drive power rating and can be founon the drive shipping carton and nameplate.
Catalog Number Explanation
➊ Not available.
1336E– Use Number for Specific Constant
Torque Drive– EN – L6 – HA1 – GM1
BULLETIN NO.
RATING-ENCLOSURE(MUST BE
SPECIFIED)
LANGUAGE MODULE(MUST BE
SPECIFIED)
L-Option(OPTIONAL)
HUMAN INTERFACE(OPTIONAL)
COMMUNICATION CARD
(OPTIONAL)
Drive Rating
Enclosures
Open IP00
No Enclosure
NEMA Type 1 IP20
General Purpose
NEMA Type 12IP54
Industrial Use
FrameDesignation
OutputAmps
NominalHP
Code Code Code
513 – 620V DC Input
G 406.4459.2505.1570.2599.2673.4
300350400450500600
R300-ANR350-ANR400-ANR450-ANR500-ANR600-AN
R300-AAR350-AAR400-AAR450-ANR500-ANR600-AN
R300C-AJR350C-AJR400C-AJNot availableNot availableNot available
W300C-AJW350C-AJW400C-AJNot availableNot availableNot availableNot available
513 – 620V DC Input
H 850.0983.0
700800
Not availableNot available
R700C-AAR800C-AA
Not availableNot available
775 V DC Input
H 770.0800.0
700800
Not availableNot available
12W700C-AA12W800C-AA
Not availableNot available
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1336 PLUS Drives
The following is an explanation of the catalog numbering system fo1336 PLUS Common Bus AC Drives and options. The catalognumber is coded to identify the drive power rating and can be founon the drive shipping carton and nameplate.
Catalog Number Explanation
➊ Not available.
1336S– Use Number for Specific Constant
Torque Drive– BM – GM1 – HA1C . . .
BULLETIN NO.
RATING-ENCLOSURE(MUST BE
SPECIFIED)
OPTIONS AS REQUIRED
Drive Rating
Enclosures
Open IP00
No Enclosure
NEMA Type 1 IP20
General Purpose
NEMA Type 12IP54
Industrial Use
FrameDesignation
OutputAmps
NominalHP
Code Code Code
513 – 620V DC Input
G 406.4459.2505.1570.2599.2673.4
300350400450500600
R300-ANR350-ANR400-ANR450-ANR500-ANR600-AN
R300-AAR350-AAR400-AAR450-ANR500-ANR600-AN
R300C-AJR350C-AJR400C-AJNot availableNot availableNot available
W300C-AJW350C-AJW400C-AJNot availableNot availableNot availableNot available
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1336 PLUS II Drives
The following is an explanation of the catalog numbering system fo1336 PLUS II Common Bus AC Drives and options. The catalognumber is coded to identify the drive power rating and can be founon the drive shipping carton and nameplate.
Catalog Number Explanation
➊ Not available.
1336F– Use Number for Specific Constant
Torque Drive– EN – LA6 – HAS1 – GMS1
BULLETIN NO.
RATING-ENCLOSURE(MUST BE
SPECIFIED)
LANGUAGE(MUST BE
SPECIFIED)
CONTROL INTERFACE(OPTIONAL)
HUMAN INTERFACE(OPTIONAL)
COMMUNICATION CARD
(OPTIONAL)
Drive Rating
Enclosures
Open IP00
No Enclosure
NEMA Type 1 IP20
General Purpose
NEMA Type 12IP54
Industrial Use
FrameDesignation
OutputAmps
NominalHP
Code Code Code
513 – 620V DC Input
G 406.4459.2505.1570.2599.2673.4
300350400450500600
R300-ANR350-ANR400-ANR450-ANR500-ANR600-AN
R300-AAR350-AAR400-AAR450-ANR500-ANR600-AN
R300C-AJR350C-AJR400C-AJNot availableNot availableNot available
W300C-AJW350C-AJW400C-AJNot availableNot availableNot availableNot available
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Torque Specifications The following table lists fastener locations by component,application, and torque specifications. Refer to “Torque Sequence”page I-4 for fastening two-point, four-point, and six-pointcomponents to the heat sink.
SCR Assembly Access
Important: Before you remove connections and wires from the drivcomponents, mark the connections and wires to correspond with thcomponent connections and terminals to prevent incorrect wiringduring assembly.
Component Fastener ApplicationTorquein.-lb
Torque N-m
Snubber Board Board to Copper Plate 7 0.8
SCR Assembly Assembly to heat sink 240 28
Converter Bus and Motor Bus Bars All connections 240 28
Wires (PE) Wires to Ground Stud 75 9
Wire (TE) Wire on Main Control Board Mounting Plate 6
Fan Connections Wires to TB1 12
PLC Comm Board Wires to TB2 7 0.8
Power Cables Cables to terminals 240 28
T-Bar Mounting Bolt T-Bar to Main Frame 240 28
Ground Cable Bolts Ground Cables from both assemblies to Main Frame Plate 175 21
!ATTENTION: Disconnect and lock out power fromthe drive before disassembling the drive. Failure todisconnect power may result in death or serious injuryVerify bus voltage by measuring the voltage between thNegative Capacitor Bus and both ends of all fuses. Anopen fuse does not show voltage across both ends of tfuse. Failure to measure voltage at both ends of the fusmay result in death or serious injury. Refer to Figure I-6Do not attempt to service the drive until the bus voltagehas discharged to zero volts.
!ATTENTION: Wear a wrist-type grounding strapwhen servicing drives. Failure to protect drivecomponents against ESD may damage drivecomponents. Refer to “Electrostatic DischargePrecautions” on page I-4.
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1336 FORCE Drives
Figure I-5SCR Assembly Access
1. Remove power from the drive.
2. Turn the enclosure door latches 90 degrees counterclockwiseopen the enclosure door.
3. Turn the latches, located on the left side of the PC BoardMounting frame, to open the PC Board Mounting Frame. ReferFigure I-5.
AB0928
Input Lines
Heat Sink Assembly Ground Cable
PC Board Mounting Frame
Drive shown with door open, sides removed.
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4. Check for zero volts between +DC and -DC. Refer to Figure I-6
Figure I-6DC Voltage Check
5. Check for the absence of control voltage at:
– TB20 and TB21 on drives using a PLC Comm Adapter Boa
– TB5, TB6, and TB7 on drives using a Standard AdapterBoard
6. Remove the customer-supplied wiring from the drive.
!ATTENTION: A blown fuse can create a hazard ofshock which may result in death or serious injury. Checkvoltage between the bus bar and both ends of all fuse
AB0930
–DC (NegativeCapacitor Bus)
+DC
Check All Bus Fuses
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1336 IMPACT Drives
Important: IMPACT Drives rated R700C – R800C and 12W700C –12W800C are accessed in the same manner as the other IMPACTdrives. Refer to “1336 IMPACT Drives” on page I-8 for drive ratinginformation.
Figure I-7SCR Assembly Access
1. Remove power from the drive.
2. Turn the enclosure door latches 90 degrees counterclockwiseopen the enclosure door.
3. Turn the latches, located on the left side of the PC BoardMounting frame, to open the PC Board Mounting Frame. ReferFigure I-7.
AB0962
Input Lines
Heat Sink Assembly Ground Cable
PC Board Mounting Frame
Drive shown with door open, sides removed.
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4. Check for zero volts between +DC and -DC. Refer to Figure I-6
5. Check for the absence of control voltage at:
– TB10
– TB11
– L-Option Board (if used)
6. Remove the customer-supplied wiring from the drive.
!ATTENTION: A blown fuse can create a hazard ofshock which may result in death or serious injury. Checkvoltage between the bus bar and both ends of all fuse
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1336 PLUS Drives
Figure I-8SCR Assembly Access
1. Remove power from the drive.
2. Turn the enclosure door latches 90 degrees counterclockwiseopen the enclosure door.
3. Turn the latches, located on the left side of the PC BoardMounting frame, to open the PC Board Mounting Frame. ReferFigure I-8.
4. Check for zero volts between +DC and -DC. Refer to Figure I-6
AB0963
Input Lines
Heat Sink Assembly Ground Cable
PC Board Mounting Frame
Drive shown with door open, sides removed.
!ATTENTION: A blown fuse can create a hazard ofshock which may result in death or serious injury. Checkvoltage between the bus bar and both ends of all fuse
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I-17
5. Check for the absence of control voltage at:
– TB10
– TB11
– L-Option Board (if used)
6. Remove the customer-supplied wiring from the drive.
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.
s.
1336 PLUS II Drives
Figure I-9SCR Assembly Access
1. Remove power from the drive.
2. Turn the enclosure door latches 90 degrees counterclockwiseopen the enclosure door.
3. Turn the latches, located on the left side of the PC BoardMounting frame, to open the PC Board Mounting Frame. ReferFigure I-9.
4. Check for zero volts between +DC and -DC. Refer to Figure I-6
AB0964
Heat Sink Assembly Ground Cable
PC Board Mounting Frame
Input Lines
Drive shown with door open, sides removed.
!ATTENTION: A blown fuse can create a hazard ofshock which may result in death or serious injury. Checkvoltage between the bus bar and both ends of all fuse
1336-5.40 – August, 1999
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5. Check for the absence of control voltage at:
– TB10
– TB11
– L-Option Board (if used)
6. Remove the customer-supplied wiring from the drive.
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All 1336 FORCE, IMPACT, PLUS, and PLUS II Drives
Snubber Board Installation Important: The assembly is shown removed from the main frame fclarity. It is not necessary to remove the IGBT and Prechargeassembly from the main frame to do this test, or to install the RCSnubber Kit.
Figure I-10Snubber Board Installation
1. Access the SCR Assembly. Refer to “SCR Assembly Access”page I-11.
2. Remove the four screws that hold the heat sink guard in place.Remove the guard.
3. Remove the two lower nuts and the wire from the Heat SinkAssembly bus bar studs. Refer to Figure I-10.
AB0932
Snubber Board
Copper Plate
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4. Position the copper plate, provided in the Snubber BoardInstallation kit, over the screw holes in the bus bar.
5. Attach the plate to the bus bar and reconnect the original blackwire. Refer to “Torque Sequence” on page I-4. Refer to “TorquSpecifications” on page I-11 for final tightening.
6. Attach the Snubber Board to the Bus Bar. Finger-tighten thescrews, alternating from screw to screw, 1/4 turn at a time. Refto “Torque Sequence” on page I-4. Refer to “TorqueSpecifications” on page I-11 for final tightening.
Figure I-11Wiring Detail
7. Route the new white wire from the Snubber Board, through theopen channel under the heat sink, and to the other side of the HSink Assembly bus bar. Refer to Figure I-11.
AB0927
Snubber Board
Existing Bus
WhiteWire
RouteWire
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8. Remove the nut from the stud on the other side of the Heat SinAssembly bus bar and connect the white Snubber Board wirethe stud. Refer to Figure I-11. Refer to “Torque Specifications”on page I-11 for final tightening.
Replace the heat sink guard. Assemble the drive in reverse order oremoval. Refer to “Torque Sequence” on page I-4. Refer to “TorquSpecifications” on page I-11 for final tightening.
!ATTENTION: Replace all guards before applyingpower to the drive. Failure to replace guards may resuin death or serious injury.
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SCR and Diode Assembly Test 1. The IGBT and Precharge assembly is shown in Figure I-12. Thassembly is shown removed from the main frame for clarity. Itnot necessary to remove the IGBT and Precharge assembly frthe main frame to do this test, or to install the RC Snubber Kit.
2. The Diode and the SCR heat sinks must be electrically isolatefrom each other and from the rest of the power circuit, to propertest the individual components.
3. To isolate the Diode from the rest of the power circuit, remove thU-shaped bus bar that connects the Diode heat sink to the SCheat sink, refer to Figure I-12.
4. To isolate the SCR from the Capacitor Bank, remove theprecharge to spine flex bus, refer to Figure I-12. Disconnect thSCR gate lead and cathode lead connector. This connector islocated in the wire harness between the precharge board andSCR.
5. Remove the four screws that hold the heat sink guard in place.Pull the guard out about 25 mm (1 in.), or just far enough to gaaccess to the lower edge of the SCR heat sink.
6. When testing the Diode or SCR it is important that the Diode anSCR clamps be at their normal torques.
7. Resistance or voltage checks made on the Diode or SCR heatsinks must be made to the heat sink aluminum base plate, notaluminum fins, refer to Figure I-12. The heat sinks have an epobonded fin, and many of the fins are NOT electrically connecteto the aluminum base plate.
8. Diode checks:
1 2
Diode (Upper Heat Sink)
Left Right
3
SCR (Lower Heat Sink)
G C
4
Left Right
Meter LeadsOhms Reading Diode Scale Volts
1 2
+ - 1 to 3 MΩ Open
- + 0 to 0.4MΩ 0.3 to 0.4 V
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9. SCR checks:
10. The Diode and SCR checks in steps 7, 8, and 9 above show arange of acceptable values. These values will vary dependingthe type of meter used, analog or digital. Most analog meters dnot have a diode scale, while most digital meters do. In generaDiode should never be shorted from Cathode (1) to Anode (2). ASCR should never be shorted from Cathode (4) to Anode (3). ASCR should read a relatively low resistance from the Cathodeor 4) to the Gate (G). An SCR should never read open resistanfrom the Cathode (C or 4) to the Gate (G).
SCR and Diode Assembly Replacement
1. If a Diode or SCR require replacement, the entire upper or lowheat sink assembly must be removed from the IGBT and Pre-charge assembly steel frame. Remove the heat sink guard completely. Remove the square shaped bus bar on the left side ofIGBT and Precharge assembly, refer to Figure I-12. Remove thscrews that attach the precharge back-up plate to the steel frafour screws for the Diode heat sink, two screws for the SCR hesink (Figure I-13).
2. Once step 1 is complete, the screws that hold the heat sink toprecharge back-up plate should be loosened one or two turns,not removed. The heat sink clamp nuts can be removed. Notepolarity of the Diode or SCR and remove the defectivecomponent.
3. Apply two drops of silicone oil to each side or face of the newDiode or SCR. Clean any dirt off of the original heat sinkmounting surfaces. Install the new Diode or SCR, with the sampolarity as the original component, in the heat sink (refer toFigure I-13). Tighten the clamp nuts to 28 N-m (240 in.-lb), whilholding the heat sinks flat against the precharge back-up plateTighten the precharge back-up plate to heat sink screws to 9 N(75 in.-lb).
Meter LeadsOhms Reading Diode Scale Volts
3 4
+ - 1 to 3 MΩ Open
- + 1 to 3 MΩ Open
C/4 G
+ - 5 to 20 Ω 0.005
- + 5 to 20 Ω 0.005
1336-5.40 – August, 1999
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ise
lt
4. Install the heat sink into IGBT and Precharge assembly steelframe. Tighten the precharge back-up plate to IGBT andPrecharge assembly steel frame screws to 9 N-m (75 in.-lb).Install the square bus bar removed in step 11, tighten the nutsbolts to 28 N-m (240 in.-lb). Install the U-shaped bus bar that wremoved in step 3 and tighten the nuts to 28 N-m (240 in.-lb).Install the precharge to spine flex bus that was removed in stepand tighten the nuts to 28 N-m (240 in.-lb). Reinstall the fourscrews that hold the heat sink guard in place and tighten the nto 3 N-m (26 in.-lb).
5. Re-connect the SCR gate lead and cathode lead connector. Thconnector is located in the wire harness between the prechargboard and the SCR.
6. This completes the Diode and SCR test and replacement.
Important: Refer to your Service or Troubleshooting Manual forIGBT Module test information.
!ATTENTION: Replace all guards before applyingpower to the drive. Failure to replace guards may resuin death or serious injury.
1336-5.40 – August, 1999
I-26
Figure I-12SCR and Diode Location
AB0925
Guard
Diode Heat Sink
Converter Back-Up Cover and Back-Up Plate
SCR Heat Sink
Screw Holes
TestLocation(SCR)
TestLocation(Diode)
1
2
3
4
Prechargeto SpineFlex Bus
U-ShapedBus Bar
AB0927
Screw
RC-SnubberWire
Square-ShapedBus Bar
Screws
1336-5.40 – August, 1999
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Figure I-13SCR Detail
AB0926
Precharge Back-UpPlate (Red Glastic)
ClampPrecharge Back-Up Cover (Red Glastic)
SCR Module
Spring Bar
Clamp Heat Sink
Bolt
Bolt
Nut
Nut
1336-5.40 – August, 1999
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Publication 1336-5.40 – August, 1999 Copyright 1999 Rockwell International Corporation. All rights reserved. Printed in USA
