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10 Spare and Optional Parts
10.1 Spare Parts
Table 7 lists the catalog numbers for the logic board, cooling
fan(s), snubber board(s) and power modules plus the quantity
required for each controller.
10.1.1 Controller Amps, Uc and Ue
Three ratings identify each controller: current (Amps - In Line or
Inside Delta), control supply voltage Uc (120V AC) and main sup-
ply voltage Ue (200-400V AC, 400-575V AC). Each spare part
relates to one or more of the ratings, e.g., each cooling fan cor-
responds to the Amps and Uc ratings regardless of the Ue rat-
ings (Ue = All, where All means either main voltage selec-
tion),whereas, each snubber board corresponds to the Amps
and Ue ratings regardless of the Uc ratings (Uc = All, where All
means any of the three control power choices).
10.1.2 Fan Orientation
From one to three cooling fans are used per controller depend-
ing on the ratings. When one fan is used, it is mounted centrally
along the width of the unit. When two fans are used, one is
mounted to the left (L) and the other to the right (R). Left and
right are defined by facing the cover of the unit, consequently,
the fan on the left is the furthest from the control terminals.
Similarly, when three fans are used, mounting locations are left
(L), center (Ctr), and right (R).
Siemens Energy & Automation, Inc.
Table 7 Spare Parts
Logic Board and Cooling Fan Catalog Numbers
Amps
In Line
Logic Board
35 - 960
Cooling Fan
35 - 57
69 - 105
131 - 248
361
480 - 720
960
3RW3960-8DC38
Uc = 120V AC
Ue = All
1/Controller
91D84060005
0/Controller
n/a
2/Controller
3RW3950-8DC38
1/Controller
3RW3960-8DC38
2/Controller
3RW3960-8DC38
3/Controller
3RW3960-8DC38
3/Controller
3RW3960-8DC38
33
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