18
DFS/DFY Synchronous Motors
5
Inspection/Maintenance
Brake motors with AV1Y absolute encoder
The encoder must be removed prior to carrying out any maintenance work on the brakes of DFY
motors:
1.
Open and remove central screw of the right-angle connector (5).
2.
Loosen bolts (11) and turn spring washer (10) to the outside before you remove encoder (12)
with coupling half (9).
Caution: Coupling is a two-piece plug-in connector!
3.
Remove protective caps (6, only with DFY71) and flange retaining bolts (3) through the
assembly hole (the bolts are on the outside with DFY90 and DFY112). , using an 8mm span-
ner. Then undo the screw counterclockwise using a 4mm hexagon socket spanner. This will
release the expanding shaft, and undo the connection with the coupling (10). For this step the
EW1 setting tool by Stegmann can be used (Art. No. 81B 001 003 001).
4.
Loosen intermediate flange (8) and center screw on right-angle connector (5) and remove
plug.
5.
Loosen coupling clamping screw (9) and carefully remove coupling from motor shaft.
6.
You may now carry out the brake maintenance work (see Sec. 5.3.2).
Reassemble in reverse order (ensure true running of tacho shaft (max. 0.05 mm)):
Coupling may not display any axial tension in stretched condition.
02910AXX
Fig. 18: DFY/B AV1Y brake motor
1
Screw plug
2
Coil body
3
Flange retaining
screw
4
Plug connector brake
5
Center screw right-angle
connector
6
Protective caps
7
Plug connector brake
8
Encoder flange
9
Coupling
10 Spring washers
11 Bolts
12 Encoder
13 Rubber seal (DFY112)
1
2
3
4
7
8
9
12
13
5
6
10 11
Summary of Contents for DFS 56L/B
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