579
Comment:
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583
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Deletions are marked like this. | Additions are marked like this. |
Line 9: | Line 9: |
1. Coil drivers in particular for Y-end had a loose connection with power line (-18V, -15V). | 1. Coil drivers in particular for Y-end had a loose connection with power line (-18V, -15V). |
Line 11: | Line 12: |
2. Sometimes watchdog? system stop the output current from the coil driver in order to | 2. Sometimes watchdog? system stop the output current from the coil driver in order to |
Mode Cleaner Suspensions
Each MC suspension has 4 coils and 2 pico-motors (pitch, yaw).
ETM
Each iKAGRA ETM suspension has 4 coils and 4 pico-motors connected.
If the coil-magnet actuator seems to have a problem, please check 2 things.
- Coil drivers in particular for Y-end had a loose connection with power line (-18V, -15V).
Please check the LED on coil driver. If the LED is out, try to fasten the power line.
- Sometimes watchdog? system stop the output current from the coil driver in order to
protect mechanical system.