Nakagaki, Miyo

We found wrong cable connection on the LVDT driver for BF-damper of PRM. The cable for the secondary coil and the cable for the primary coil are swapped.

This wrong cabling may be happen in the re-installation (klog#6499) without any cabling diagram or cabling procedure.

I think wrong cabling on the LVDT driver could be acceptable in the LVDT coils for GAS or IP because the LVDT coils and actuator coil are separated.

Hoever, in the case of BF-damper, they are mixing the actuation signal and the modulation signal of LVDT readout in the primary coil. I'm not sure whether this wrong cabling is acceptable or not for BF-damper.

(The cabling of other Type-Bp are same in each other except PRM)