Siemens SINUMERIK 808D Service Manual page 19


Service case
of hardware
硬件故障 硬件故障 硬件故障 硬件故障
fault 服务案例 服务案例 服务案例 服务案例
Internal chip overcurrent → appears when power is obtained
A06 alarm
内部芯片过电流 → 接通主电源时出现 / 电机运行过程中出现
A06 报警
from the line supply / appears during motor operation.
Check the U, V, W, PE connections on the drive
检查驱动器 、、、之间的连接线
1. Whether connections between different phases
不同相位之间的连线是否短接
are short-circuited.
2. Whether a U, V, W phase is disconnected.
检查 、、是否有一相断开
3. Whether the grounding connection is
线路接地是否错误或接地不良
incorrect or has bad grounding.
连接线本身是否损坏
4. Whether the connection is damaged.
核查后重新上电观察故障是否还存在。
Power on again and observe whether the
fault still exists after verification.
If the fault still exists after the above operation, check the insulation of the
如果上述操作后故障仍在,则需要检查电机的绝缘是否损坏,必要时可更换
motor and see if it is damaged. The motor can be changed when necessary.
电机,重新上电后观察故障是否存在。
Then power on again and observe whether the fault still exists.
Replacement and maintenance are necessary if the fault still exists after
如果上述操作之后故障仍然存在,则很可能是驱动器损坏,需要进行更换或
the above operation, because it is probable that the drive is damaged.
维修。
The ground circuit is short-circuited → appears when
A07 alarm
power is obtained from the line supply / appears during
motor operation.
A07 报警 接地短路 → 接通主电源时出现 / 电机运行过程中出现
Check the U, V, W, PE connections on the drive
1. Whether connections among different phases are short-circuited.
检查驱动器 、、、之间的连接线
Power on again and observe whether the fault still exists after verification.
不同相位之间的连线是否短接
核查后重新上电观察故障是否还存在。
Replacement and maintenance are necessary if the fault still exists after
the above operation, because it is probable that the IGBT module in the
如果上述操作之后故障仍然存在,则很可能是驱动器内部 模块损坏,
drive is damaged.
需要进行更换或维修。
808D turning and milling
车削与铣削 车削与铣削 
车削与铣削 车削与铣削
   第 第 第 第 页 页 页 页 

A08 alarm The encoder U/V/W connections are incorrect.
编码器 U / V / W 错误
A08 报警
Check the signal cable between the motor and the drive (the encoder
from the drive to the motor)
检查驱动器与电机之间的信号电缆(从驱动器到电机的编码器)
1. Whether the internal cable connections have faulty contacts.
是否存在电缆内部线路接触不良
2. Whether the cable shielding is poor.
是否存在电缆屏蔽不良
3. Whether the shielded ground cable is connected correctly.
屏蔽地线是否接好
Power on again and observe whether the fault still exists after verification.
核查后重新上电观察故障是否还存在。
The interface circuit of the encoder must be checked if the fault still exists
after the above operation.
如果上述操作后故障仍在,则需要检查编码器的接口电路是否出现故障
Replacement and maintenance are necessary if the fault still exists after
the above operation, because it is probable that the encoder on the drive
如果上述操作之后故障仍然存在,则很可能是电机内部的编码器损坏,需要
is damaged.
进行更换或维修。
A09 alarm The encoder TTL has pulse faults.
编码器 TTL 脉冲错误
A09 报警
Check the signal cable between the motor and the drive (the encoder
from the drive to the motor)
1. Whether the connection of the encoder cable is correct.
检查驱动器与电机之间的信号电缆(从驱动器到电机的编码器)
2. Whether the internal cable connections have faulty contacts.
编码器电缆连接是否正确
3. Whether the cable shielding is poor.
是否存在电缆内部线路接触不良
4. Whether the shielded ground cable is connected correctly.
是否存在电缆屏蔽不良
Power on again and observe whether the fault still exists after verification.
屏蔽地线是否接好
The interface circuit of the encoder must be checked if the fault still exists
核查后重新上电观察故障是否还存在。
after the above operation.
Replacement and maintenance are necessary if the fault still exists after
如果上述操作后故障仍在,则需要检查编码器的接口电路是否出现故障
the above operation, because it is probable that the encoder in the drive
is damaged.
如果上述操作之后故障仍然存在,则很可能是电机内部的编码器损坏,需要
进行更换或维修。
page 19
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