Rockwell Automation 2361 Armature SCR Replacement User Manual
Page 6
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Armature SCR Replacement (for 3000A 1395 Drives)
Replacing the SCRs
1.
Connect the armature-pulse transformer board connectors to the
SCR leads (SD3100 drives will need to have pulse-gate amplifier
board connectors crimped onto the SCR leads).
2.
Apply silicone oil to the contact surfaces of the SCR.
3.
Place the SCR, orienting it properly, and fit the roll pins into the
SCR indentations (take care not to damage the SCR). The gate
leads should extend out the right side (see the leads illustrated in
Figure 1).
4.
Replace the front spring assembly onto the clamp, replace the
clamp washers, and screw on the clamp nuts.
5.
Replace the Glastic frame and screw in the mounting bolts.
Torque to 50 lb-in.
6.
Secure the U-shape output busbar, replacing the two bolts and
torquing them to 25 lb-ft.
7.
Torque the spring assembly to 10,000 lb-ft (10 on spring indica-
tor).
!
ATTENTION: The heatpipe assembly weighs
about 75 lbs. Take the proper precautions (adhere
to your company material handling procedures)
when lifting the assembly to prevent personal injury
and damage to the equipment.
Red
White
1395 Drives
SD3100 Drives
!
ATTENTION: Ensure that the SCRs are installed with
the proper polarity. Improper installation will result in
damage to the power bridge and may damage other
externally connected equipment.