SyEÂ Synchronous / Master-Slave fault in Toshiba drive
SyE Synchronous / Master-Slave Error fault in Toshiba drive
Description SyE is found in multi-drive applications configured for "Master/Follower" or "Electronic Gearing" operation via a direct drive-to-drive link. The "Follower" (Slave) drive monitors its position or speed relative to the "Master." If the Follower lags behind or drifts too far from the Master's target (outside the "Sync Window"), it trips SyE. Causes
1. Communication Lag: The link cable between drives is receiving interference, delaying the sync pulses.
2. Torque Limit: The Follower drive hit its torque limit/current limit and physically cannot spin fast enough to keep up with the Master.
3. Gear Ratio: The electronic gearing ratio is set aggressively, asking the Follower to accelerate faster than physics allow.
4. Mechanical Slip: The load on the Follower drive slipped (e.g., separate conveyor belts). Solution Check the load on the Follower drive. If it is running at 100% current (OL alarm), it cannot maintain sync. You must slow down the Master's acceleration rate or reduce the load.
Widen the "Synchronization Error Band" parameter. If the application allows for a few degrees of error (e.g., a loose web vs a rigid shaft), increasing this tolerance will prevent nuisance tripping.
Check the sync cable. It should be a short, shielded high-speed connection. If using fiber optics for sync, check for bend radius issues or dirty connectors.
Description SyE is found in multi-drive applications configured for "Master/Follower" or "Electronic Gearing" operation via a direct drive-to-drive link. The "Follower" (Slave) drive monitors its position or speed relative to the "Master." If the Follower lags behind or drifts too far from the Master's target (outside the "Sync Window"), it trips SyE. Causes
1. Communication Lag: The link cable between drives is receiving interference, delaying the sync pulses.
2. Torque Limit: The Follower drive hit its torque limit/current limit and physically cannot spin fast enough to keep up with the Master.
3. Gear Ratio: The electronic gearing ratio is set aggressively, asking the Follower to accelerate faster than physics allow.
4. Mechanical Slip: The load on the Follower drive slipped (e.g., separate conveyor belts). Solution Check the load on the Follower drive. If it is running at 100% current (OL alarm), it cannot maintain sync. You must slow down the Master's acceleration rate or reduce the load.
Widen the "Synchronization Error Band" parameter. If the application allows for a few degrees of error (e.g., a loose web vs a rigid shaft), increasing this tolerance will prevent nuisance tripping.
Check the sync cable. It should be a short, shielded high-speed connection. If using fiber optics for sync, check for bend radius issues or dirty connectors.
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