Repairs
Motor units
Product Manual IRB 640
43
8 Motor units
8.1 General
Each manipulator axis is provided with a motor unit consisting of:
- A synchronous AC motor
- A brake unit
- A feedback unit.
A gear on the output shaft of the motor forms together with the gear on each axis, the
complete gear unit. Dismounting/mounting of the gear unit is described in an earlier
chapter of this manual.
The electro-magnetic brake is built into the motor unit. The brake is released by a
24 V DC supply. For brake release see Section 7, Installation and Commissioning.
The feedback unit consists of a resolver mounted on the motor shaft and is built into
the motor unit in a similar way as the brake.
Power and signal connections to the motor units are via separate cables between
connections points inside the manipulator and each motor. The cables are connected
to the motor units with connectors.
- The feedback unit is fitted by the motor manufacturer and must never be sep-
arated from the motor.
- The communication angle is + 90° (COMOFF=2048).
The motors never need commutating.
- The motor, resolver and brake is to be regarded as an replacement motor unit.
Faulty motor units are repaired by the motor manufacturer at the request of
the ABB Robotics service organisation.
- The cable routing is shown in Figure 8. Note that the signal connection cable
and the power connection cable must not be entwined.
Figure 8 Cable routing in the motor unit.
Power connection
Signal connection
Содержание IRB 640
Страница 1: ...Product Manual 3HAC 7579 1 IRB 640 M2000 ...
Страница 4: ...Installation and Commissioning Page 2 Product Manual IRB 640 ...
Страница 19: ...Installation and Commissioning On Site Installation Product Manual IRB 640 17 ...
Страница 20: ...On Site Installation Installation and Commissioning 18 Product Manual IRB 640 ...
Страница 29: ...Maintenance CONTENTS Page 2 Product Manual IRB 640 ...
Страница 69: ...Axis 2 Repairs 26 Product Manual IRB 640 ...
Страница 79: ...Link system Repairs 36 Product Manual IRB 640 ...
Страница 81: ...Pushbutton unit for releasing brakes Repairs 38 Product Manual IRB 640 ...
Страница 85: ...Axis 6 Repairs 42 Product Manual IRB 640 ...
Страница 101: ...Calibration Repairs 58 Product Manual IRB 640 ...
Страница 105: ...Special Tools List Repairs 62 Product Manual IRB 640 ...
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Страница 152: ...Revision 00 No of sheets sheet 12 10 Circuit Diagram 3HAC 1352 1 Customer Signal Connection ...