10. If so equipped, the SAMMS panel may be released by loos-
ening the captive screw a few turns, then swinging the
panel to the right to gain access to components mounted
behind it.
11. The drawout unit should be protected from abuse, dust,
and moisture while it is out of the motor control.
12. Latch unit door over open space by rotating the top 1/4
turn latch so that the arrow is pointing up.
3.18 Plug-In Unit Addition
Hazardous voltage.
Will cause death or serious
personal injury.
Energized vertical bus may be partially
exposed through the access holes in the
barrier when the unit is not fully insert-
ed. Use extreme caution when perform-
ing any wiring or maintenance with the
unit withdrawn.
1. Remove the blank door by removing the hinge pins, closing
the door halfway, and pulling it off the hinges.
2. Remove the door gasket angle (intermediate angle) by
removing the screw which fastens it to the separator angle
and tipping slightly to remove the formed tab at top from
the slot in the shelf bracket above.
3. If necessary, install the unit support assembly by inserting
the shelf brackets at a slight angle into the appropriate
holes in the vertical bus support angle and snapping into
place. Secure the support assembly with the two screws
provided. One screw fastens the right-hand shelf bracket to
the vertical bus support angle. The second screw fastens the
separator angle to the left side of the structure.
4. Remove the appropriate unit stab hole covers.
5. Mount the unit door by placing it on the hinges while half
open. Open completely and insert the hinge pins.
6. Plug-In: Move the unit operator handle to the .OFF. position.
Slide the control unit into place on the support assembly.
Complete unit engagement by sliding over the stop on
the shelf brackets with the supplementary installation han-
dle on the bottom barrier plate and closing the racking lever
in the top barrier plate. Engage the multi-turn locking latch
on the bottom plate of the unit to the separator angle and
tighten the screw.
Note:
High density (6.) units do not utilize a multi-turn latch.
7. Fix mounted: For the location of the panel mounting brack-
ets, see the fixed mounted panel diagram in Figure 53. Use
the bracket with the tab for the top mounting holes.
8. Follow procedures for connecting outgoing power and con-
trol wiring.
9. Close the door and perform all pre-operation check proce-
dures.
Figure 48
Operating handle in
the “OFF” position
Figure 49
Terminal blocks on
swing plate
Figure 50
- Optional pull apart terminal blocks
Siemens Energy & Automation, Inc.
26
Figure 51
- Padlocking in “test” position
Figure 52
- Fixed Mounted Panel Diagram
