SEW-Eurodrive DR 315 Series, Руководство по эксплуатации

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7
Inspection/maintenance
Inspection/maintenance work for DR..71 – 315, DRN63 – 315, DR2..56 – 80 brakemotors
Operating Instructions – AC Motors
168
7.6.21 Replacing BE05 – 2 brakes for DR..71 – 80, DRN80, DR2..80 motors
ü
The motor and all connected options are disconnected from the power supply.
ü The motor is protected against unintended restart.
1. Disassemble the following parts:
ð Forced cooling fan and rotary encoder, if installed, see chapter "Motor and
brake maintenance – preliminary work" (→
2 123).
ð
Fan guard with encoder mount [212] or fan guard [35], retaining ring [32]/[62]
and fan [36]
2. Remove the terminal box cover and loosen the brake cable from the brake control/
terminals. Attach trailing wire to brake cables, if necessary.
3. Remove the screws and brake (with brake endshield if necessary) from the stator.
ð DR..71 – 80, DRN80, DR2..80: Screws [13]
4. Replace gasket [392]. Observe the alignment of the gasket.
5. If necessary, replace driver [70], key [71], and retaining ring [62], see chapter
"Working steps for inspecting DR..71 – 315, DRN63 – 315, DR2..63 – 80 brakemo-
tors" (→
2 148).
6. Insert the brake cable of the new brake into the terminal box.
7. Position the new brake. Make sure the cable outlet and brake lining carrier gearing
are correctly aligned.
8. Refasten the brake using the screws.
ð Cap screws [13]
ð
Tightening torque 5 Nm.
ð
Tolerance ±10%.
9. Seal the shaft.
10. Replace the sealing ring [95].
11. Apply grease to the sealing lip, see chapter "Order information for lubricants, anti-
corrosion agents and sealants" (→
2
213).
12. For designs with corrosion protection /KS and/or IP56/66, the clamping straps of
the disassembled brake have to be mounted to the new brake [550]. Seal studs
with SEW-L-Spezial, see chapter "Order information for lubricants, anti-corrosion
agents and sealants" (→
2
213).
13. DANGER! No braking due to incorrectly set floating clearance "s". Severe or
fatal injuries. Make sure the floating clearance "s" is correctly set, so that the pres-
sure plate can move up as the brake lining wears.
Option manual brake release: Set floating clearance "s" using the adjusting nuts,
see chapter "Retrofitting the /HR, /HF manual brake release" (→
2
172).
14. Diagnostic unit option /DUE: Insert the sensor [1151] into the magnet body [54] of
the new brake using the screw fitting. Fasten the cable with the terminal
[1152/1153] at the magnet body in a way that the sensor cable cannot touch the
fan wheel [36]. Then calibrate the zero value, see chapter "Calibrating the zero
value" (→
2 186).
15. Install the disassembled parts of the motor.
25851535/EN – 02/2019