. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography K( Rotract l_jT__rrm_ ** "â *" From 120 vox Kk> Foot Marker -11-HtHâ(Jr â¢o "jo HIâNormally Opon âCJ3â NofWWHf Clotod Swilehot Kao HIâ â1|-^â. ccw ftotract Ponotrolo To Stopping Fig. 2 Command Decode and Logic D, and D2 are steering diodes to separate two command current directions. Relays K-| and Kâ coils were rewound with approximately ten times the number of turns as were K2 and K4 so that these two respond to lower current leve
. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography K( Rotract l_jT__rrm_ ** "â *" From 120 vox Kk> Foot Marker -11-HtHâ(Jr â¢o "jo HIâNormally Opon âCJ3â NofWWHf Clotod Swilehot Kao HIâ â1|-^â. ccw ftotract Ponotrolo To Stopping Fig. 2 Command Decode and Logic D, and D2 are steering diodes to separate two command current directions. Relays K-| and Kâ coils were rewound with approximately ten times the number of turns as were K2 and K4 so that these two respond to lower current levels. Diodes Dj, D^, Dg, and Dfi suppress inductive surges while D, and D, also act as voltage limiters across K, and K3. The contact closures of any command relay circuit supply 6 vdc to an inverter for conversion to 115 volts 60 HZ power to power measurement devices and to drive the step motors. Power is not applied to the motors until the command relay is released except when penetration has stopped at a foot marker switch. The foot marker switches are placed at penetration intervals of one foot; thus, when penetration occurs, it proceeds until one foot has passed. When any marker switch is activated, the system is halted. If another penetration command is given, the system will restart and penetration will proceed while the command is in effect or until the system clears the foot marker switch, where it will halt until the penetration command is released. The foot marker switches do not halt retraction. All motor overtravel is prohibited by the action of limit switches. Contacts of relays K], K3> K4, Kg, and K1Q are used to calibrate the torque measurinq channel and to shift telemetry channel B to its various input signals. These contacts are shown in Figs. 3 and 4 and detailed discus- sion of their action is reserved for later. 120 Vac. ±1 Output to Telemetry Channel 8. Please note that these images are extracted from scanned page images that may have been d
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