Siemens SINAMICS V70 Drives

This message is a reminder, not a fault. It indicates that the handwheel function is currently activated and assigned to a machine axis. No special action is typically required unless you need to disable the handwheel.

This message is a reminder, not a fault. It indicates that the machine's spindle is currently in the process of braking or slowing down. The alarm will clear automatically once the spindle has finished braking.

This alarm indicates that the time taken for the spindle to change gears has exceeded the allowed limit. This can point to either an incorrect setting for the monitoring time or a mechanical problem within the spindle gearbox.

This alarm indicates a problem with the cooling motor, potentially due to an overload or an electrical connection issue. It suggests that the cooling system is not operating correctly, which could lead to overheating.

This alarm appears when the lubricating oil level in the oil box drops below the minimum set value. Ignoring this alarm and continuing operation can lead to mechanical damage to the system.

This is a reminder, not a fault. It indicates that the first preset service maintenance plan for the control system is approaching. This allows time to make the relevant preparations for the scheduled service.

This alarm indicates that the tool release process for the spindle has taken longer than the allotted monitoring time, resulting in a failure to release the tool. This can be caused by various electrical, mechanical, or pneumatic issues.

This alarm indicates that the tool clamping process for the spindle has exceeded the allowed monitoring time, leading to a failure in clamping the tool. This can be caused by various electrical, mechanical, or pneumatic issues.

The control system issues an alarm indicating an issue with the CNC lock function's activation, extension, or deactivation file. This happens when the file contains incorrect or unsupported data, such as a wrong version or an incorrect serial number.

This alarm is issued after a defective PPU is replaced, indicating that the new PPU and CF card have new serial numbers. This may require specific activation procedures.

This alarm serves as a reminder that the lock date for the NC start function is approaching. It indicates the remaining days before the NC start will be disabled.

This alarm indicates that the predefined lock date has been reached, and consequently, the NC start function has been disabled, preventing machine operation.

This alarm is issued after an NC restart if the system date was set to a date earlier than the actual current date, which disables the NC start function.

This alarm is issued if a date equal to or later than the lock date is set, or if a future date earlier than the lock date is set. Consequences vary based on whether an NC restart has been performed.

The PPU screen indicates that the feed axis is moving, but the physical axis remains stationary. This suggests a disconnection between the control system and the mechanical movement.

When the axis traversing keys are pressed in 'JOG' mode, the axis can only move in a single direction and its direction cannot be changed.

The actual movement direction of the axis is opposite to the direction selected in operation or displayed on the PPU screen.

This fault indicates an overcurrent condition within the IGBT or internal chip. It can appear when the main power supply is connected or during motor operation.

This fault indicates a short circuit in the ground connection. It may appear when the main power supply is connected or during motor operation.

This fault indicates an issue with the encoder's TTL pulse signal, typically due to a problem with the cabling or the encoder itself.

This fault indicates that the motor is under an overload condition or its following error is beyond acceptable limits. This can happen during cutting operations or axis movements.

The handwheel cannot be used or assigned to an axis successfully, preventing manual control of machine movements.

An alarm is displayed on the PPU indicating that a hardware limit switch has been triggered, preventing further axis movement in that direction.

The axis has physically moved past a hardware limit switch, but the system continues to allow movement and does not issue any alarm, indicating a safety bypass.

Certain keys on the Machine Control Panel (MCP), such as '+' or '-', do not respond when pressed.

The Machine Control Panel (MCP) does not respond after power-on, and all its status LEDs are either off or continuously flashing. Alarm 400003 may also appear.

The machine manufacturer or dealer has forgotten the OEM PIN that was assigned during the initial creation. This prevents them from creating a valid activation file for the control system's CNC lock function.

The axis cannot move or moves with difficulty because of an overload condition. The drive may also issue an overload alarm.

The control system cannot start up successfully after power-on. The PPU normally shows a black screen with no display at all, indicating a startup failure.

The HMI screen or the keys on the PPU are unresponsive, preventing user interaction with the control system.

The operating position of the machine coordinate system is not accurate, leading to precision issues during operations.

When attempting to approach the reference point and pressing the desired axis traversing key, the position values displayed on the PPU do not change and the axis does not move.

The spindle does not move, and the PPU screen displays a message indicating it is waiting for a spindle signal, without issuing any specific alarm.

The PPU displays spindle speed values, but the spindle itself remains stationary without any associated alarm.

The spindle's rotation speed fluctuates and is not stable during operation, affecting machining quality.

The system loading process crashes during startup, typically freezing at 40% on the HMI display.

The tool change process fails, leading to the tool not changing, an incorrect tool being selected, or the turret continuously rotating.

During a tool change, the tool arm fails to return to its home position, which can disrupt subsequent operations.