Figure 1 – Rockwell Automation 1336S_F_E_T_R Transistor,Thyristor (SCR) Replacement User Manual
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Transistor and Thyristor (SCR) Replacement for 1336 PLUS, PLUS II, FORCE, IMPACT and REGEN Drives
Figure 1 Tightening Sequences
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
!
ATTENTION: Components may be damaged or component life
may suffer if temporary or final torquing is not performed to
specification.
Two Point Mounting
Four Point Mounting
Temporary Torque Sequence
Final Torque Sequence
Temporary Torque Sequence
Final Torque Sequence
Temporary Torque Sequence
Final Torque Sequence
Six Point Mounting
1
2
1
3
4
2
2
5
3
6
1
4
4
1
6
3
1
2
3
4
4
3
1
2
2
1
2
1
5
2
4
5
6
3
2
1