Service Instructions
!
!
Transistor and Thyristor (SCR)
Replacement for 1336 PLUS, PLUS II,
FORCE, IMPACT and REGEN Drives.
Description These instructions cover the proper method of replacing transistor and
SCR modules in the 1336 family of drives. Failure to properly prepare
the mounting surface or to torque the components to rated specifications
will result in decreased service life of the replacement components.
Contents Description Page
Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Surface Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Thermal Grease Requirements. . . . . . . . . . . . . . . . . . . . . . . . . 3
Torque Mounting Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Safety Precautions
ATTENTION: Some printed circuit boards and drive
components may contain hazardous voltage levels.
Remove and lock out power before you disconnect or
reconnect wires, and before you remove or replace fuses
and circuit boards. Verify bus voltage by measuring the
voltage between +DC and - DC on Terminal Block TB1.
Do Not attempt to service the drive until the bus voltage
has discharged to zero volts.
ATTENTION: Potentially fatal voltages may result from
improper useage of oscilloscope and other test equipment.
The oscilliscope chassis may be at a potentially fatal
voltage if not properly grounded. If an oscilliscope is used
to measure high voltage waveforms, use only a dual
channel oscilliscope in the differential mode with X100
probes. It is recommended that the oscilliscope be used in
the A minus B Quasi-differential mode with the
oscilliscope chassis correctly grounded to an earth ground.
2 Bulletin 1336 Service
!
ATTENTION: This assembly contains parts and sub-
assemblies that are sensitive to electrostatic discharge.
Static control precautions are required when servicing this
assembly. Component damage may result if you ignore
electrostatic discharge control procedures. If you are not
familiar with static control procedures, reference AllenBradley Publication 8000-4.5.2 Guarding Against
Electrostatic Damage, or any other applicable ESD
protection handbook.
Surface Preparation After removing the transistor or SCR modules from the drive, the heat-
sink and replacement modules must be prepared using the following
method to ensure proper heat transfer and operation of the replacement
components.
1. Remove all old heat transfer compound from the surface of the
heatsink using a tool such as a rubber spatula that will not mar the
heatsink surface. Remove any remaining residue with a soft cotton
cloth and a cleaning fluid such as Essex Cleaning Fluid, Brownell
OS-3 by Dow Corning Co. (Mineral spirits may also be used if
Essex cleaning fluid is not available).
2. Use a non-marring cleaning pad such as a Scotchbrite by 3M
remove any oxidation from the face of the heatsink. DO NOT use
steel wool or sandpaper to clean the surface of the transistor/SCR
baseplate or the heatsink, as they could scratch or score the surface
which will impede heat transfer from the transistor to the heatsink.
3. Follow the oxidation removal with a final cleaning of both the
heatsink and the module baseplate with cleaning fluid and the soft
cloth.
TM
to
NOTE: Thermal compound must be applied immediately to both surfaces as detailed in the following Installation section to prevent oxidation from reoccuring.
If a cleaning agent other than Essex by Dow Corning is used, make
certain it leaves No residue on the heat transfer surfaces.
Installation Install the transistor or SCR module to the heatsink as follows:
1. Apply a liberal coating of themal compound (AOS 52022) to the
transistor or SCR module base plate using the amount of 6 gram
blister packs (part number 196261) recommended in Table 1 for
your particular device.
2. Apply the thermal compound until the metal surface is no longer
visible. Do not allow any foreign particles or contamination to
collect on the thermal grease. The nominal thickness of the grease
coating should be about 0.005 inches or 0.127 millimeters.
3. Mount the transistor or SCR module on the heatsink, pressing and
rotating in a slight circular motion to better seat the transistor onto
the heatsink and distribute the grease more evenly.
4. Apply slight pressure and attempt to lift the module back off the
heatsink. If the module does not easily separate from the heatsink,
the thermal interface is correct. If the module easily separates from
the heatsink with no suction effect, this could be due to insufficient
grease or foreign particles on either the module base plate or the
Bulletin 1336 Service 3
heatsink. Remove foreign particles and/or apply more grease and
reseat the module until it is properly attached to the heatsink.
Table 1.1 Thermal Grease Requirements
Number of 1
Spare Part Kit
Number
74100-818-12 22501-013-01 1MB1400NN-120 2
74100-818-13 22501-013-01 1MB1400NN-120 2
74100-818-15 22501-011-02 1MB1300NN-120 2
74100-818-16 22501-011-02 1MB1400NN-120 2
74100-828-12 22501-011-01 1MB1300NN-120 2
74100-818-14 194046-Q01 1MB1600PX-140 1
74100-818-17 194046-Q01 1MB1600PX-140 1
74100-838-05 194530-Q02 TD425N16KOF 1
74100-838-06 194530-Q02 TD425N16KOF 1
74100-838-09 22501-027-01 TD500N16KOF 1
74100-838-10 22501-027-02 TD500N14KOF 1
194972 22501-026-02 TT425N14KOF 1
74100-838-15 194530-Q01 TT425N16KOF 1
74100-838-03 194529-Q02 TD250N16KOF 1
74100-838-04 194529-Q02 TD250N16KOF 1
74100-838-07 194529-Q01 TD250N16KOF 1
74100-838-08 194529-Q01 TD250N16KOF 1
74100-838-01 194528-Q01 TT142N16KOF 1
74100-838-02 194528-Q01 TT142N16KOF 1
74100-837-15 24808-676-01 DD90N12L 1
195036 164267 T1509N12TOF 3
74100-818-18 22501-014-03 FZ800R12KF1 4
74100-818-19 22501-014-04 FZ800R16KF1 4
74100-818-20 22501-014-01 FZ1200R12KF1 8
74100-818-21 22501-014-01 FZ1200R12KF1 8
74100-818-22 22501-014-02 FZ1200R16KF1 8
74100-818-23 22501-014-02 FZ1200R16KF1 8
74100-818-25 22501-014-01 FZ1200R16KF1 4
74100-818-26 22501-014-02 FZ1200R16KF1 4
74103-172-01 22501-014-02 FZ1200R12KF1 8
74103-172-02 22501-014-02 FZ1200R16KF1 8
74100-846-01 24708-501-01 Resistor 1
74100-846-02 24708-501-03 Resistor 1
74100-846-04 24708-501-05 Resistor 1
74100-846-05 24708-501-07 Resistor 1
74100-822-03 24708-470-04 Resistor 1
74100-822-04 24708-470-03 Resistor 1
74100-822-05 24708-470-03 Resistor 1
74100-822-07 24708-470-11 Resistor 1
Note: 6 gram packet is Allen-Bradley part no.196261
Transistor/Resistor
Part Number Vendor Part No.
gram
packets
5. Align the transistor mounting holes with the holes in the heatsink.
Insert the new screws supplied with the kit in to the holes in the
heatsink (Do Not reuse screws from the old module). Temporarily
screw the fasteners to a finger tight position.
4 Bulletin 1336 Service
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6. Consult the mounting screw tightening sequence for your particular
module as shown in Figure 1-1. Temporarily torque the mounting
screws to 10% of the final torque number shown in Table 1-2.
7. Perform the final torquing of the screws in the rotation sequence
shown in Figure 1-1. All screws should be at the final rated torque
shown in Table 1-2.
Two Point Mounting
ATTENTION: Components may be damaged or
1
component life may suffer if temporary or final torqueing
Temporary
Torque Sequence
Final
Figure 1-1. Torque Mounting Sequence
Torque Sequence
is not performed to specification.
2
1
2
2
1
Four Point Mounting
1
4
Temporary
Torque Sequence
Final
Torque Sequence
3
2
1
4
2
3
3
2
4
1
Six Point Mounting
4
3
Temporary
Torque Sequence
Final
Torque Sequence
5
2
6
1
2
4
5
3
1
6
6
1
3
4
5
2
8. After the rated torque has been applied to the heatsink mounting
screws, wait 45 minutes and then re-torque the fasteners to the final
rated torque again. The thermal grease tends to redistribute in a
process called "bleeding". This process tends to decrease the
mounting force the screws impose on the backplate as a function
of time. The correct magnitude of force needs to be re-established
after the time period has passed.
9. When the module is successfully mounted and torqued reinstall the
electrical leads and torque the gate and emitter lead connections to
the values shown in Table 1-2.
Bulletin 1336 Service 5
Table 1.2 Torque Requirements
Spare Part Kit
Number
74100-818-12 22501-013-01 1MB1400NN-120 26 lb-in 14 lb-in 14 lb-in
74100-818-13 22501-013-01 1MB1400NN-120 26 lb-in 14 lb-in 14 lb-in
74100-818-15 22501-011-02 1MB1300NN-120 26 lb-in 14 lb-in 14 lb-in
74100-818-16 22501-011-02 1MB1400NN-120 26 lb-in 14 lb-in 14 lb-in
74100-828-12 22501-011-01 1MB1300NN-120 26 lb-in 14 lb-in 14 lb-in
74100-818-14 194046-Q01 1MB1600PX-140 26 lb-in 72 lb-in 14 lb-in
74100-818-17 194046-Q01 1MB1600PX-140 26 lb-in 102 lb-in N/A
74100-838-05 194530-Q02 TD425N16KOF 50 lb-in 102 lb-in N/A
74100-838-06 194530-Q02 TD425N16KOF 50 lb-in 102 lb-in N/A
74100-838-09 22501-027-01 TD500N16KOF 50 lb-in 102 lb-in N/A
74100-838-10 22501-027-02 TD500N14KOF 50 lb-in 102 lb-in N/A
194972 222501-027-02 TT425N14KOF 50 lb-in 102 lb-in N/A
74100-838-15 194530-Q01 TT425N16KOF 50 lb-in 102 lb-in N/A
74100-838-03 194529-Q02 TD250N16KOF 50 lb-in 80 lb-in N/A
74100-838-04 194529-Q02 TD250N16KOF 50 lb-in 80 lb-in N/A
74100-838-07 194529-Q01 TD250N16KOF 50 lb-in 80 lb-in N/A
74100-838-08 194529-Q01 TD250N16KOF 50 lb-in 80 lb-in N/A
74100-838-01 194528-Q01 TT142N16KOF 50 lb-in 40 lb-in N/A
74100-838-02 194528-Q01 TT142N16KOF 50 lb-in 40 lb-in N/A
74100-837-15 24808-676-01 DD90N12L 50 lb-in 40 lb-in N/A
195036 164267 T1509N12TOF 26 lb-in 208 lb-in N/A
74100-818-18 22501-014-03 FZ800R12KF1 32 lb-in 80 lb-in 14 lb-in
74100-818-19 22501-014-04 FZ800R16KF1 32 lb-in 80 lb-in 14 lb-in
74100-818-20 22501-014-01 FZ1200R12KF1 32 lb-in 80 lb-in 14 lb-in
74100-818-21 22501-014-01 FZ1200R12KF1 32 lb-in 80 lb-in 14 lb-in
74100-818-22 22501-014-02 FZ1200R16KF1 32 lb-in 80 lb-in 14 lb-in
74100-818-23 22501-014-02 FZ1200R16KF1 32 lb-in 80 lb-in 14 lb-in
74100-818-26 22501-014-02 FZ1200R16KF1 32 lb-in 80 lb-in 14 lb-in
74103-172-01 22501-014-01 FZ1200R12KF1 32 lb-in 80 lb-in 14 lb-in
74103-172-02 22501-014-02 FZ1200R16KF1 32 lb-in 80 lb-in 14 lb-in
74100-846-01 24708-501-01 Resistor 26 lb-in NA N/A
74100-846-02 24708-501-03 Resistor 26 lb-in NA N/A
74100-846-04 24708-501-05 Resistor 26 lb-in NA N/A
74100-846-05 24708-501-07 Resistor 26 lb-in NA N/A
74100-822-03 24708-470-04 Resistor 26 lb-in NA N/A
74100-822-04 24708-470-03 Resistor 26 lb-in NA N/A
74100-822-05 24708-470-03 Resistor 26 lb-in NA N/A
74100-822-07 24708-470-11 Resistor 26 lb-in NA N/A
Transistor/Resistor
Part Number Vendor Part No.
Base Plate
Screw
Torque
Power
Connection
Torque
Gate/Emitter
Connection
Torque
6 Replacement for 1336 PLUS, PLUS II, FORCE, IMPACT and REGEN Drives.
Publication Motors 1336FREST--5.12ML – October, 2000 P/N 196405 (01)
Copyright 2000 Rockwell International Corporation. All rights reserved. Printed in USA
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