Rockwell Automation 1336S_F_E_T_R Transistor and Thyristor (SCR) Service - Manual

Service Instructions
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.
Transistor and Thyristor (SCR)
Replacement for 1336 PLUS, PLUS II,
FORCE, IMPACT and REGEN Drives.