Motor and PLC revision Crossword.

Edit Answers
123456789101112131415
Across
  1. 4. Another name for d.c. injection braking.
  2. 5. A normally closed pushbutton switch.
  3. 6. A non-contact type of limit switch.
  4. 7. The type of circuit that electrical and mechanical interlocks protect from in a star-delta starter.
  5. 8. The type of electrical isolation used between the CPU and field devices in a PLC.
  6. 9. The part of a ladder diagram that represents the power bus.
  7. 11. A normally open pushbutton switch.
  8. 13. The direction contacts in a circuit diagram should operate in.
  9. 14. The type of drawing used for PLC programming.
  10. 15. The PLC program is stored in this memory.
Down
  1. 1. The current a thermal overload should be set at.
  2. 2. A system of electronic circuits on a single chip.
  3. 3. More of this may be required if operating a motor for extended times at low speed.
  4. 5. one of the three variables that can be used to provide speed control of an induction motor.
  5. 10. The type of resistance starter that provides some speed control as well as reducing start up current.
  6. 12. This is proportional to voltage squared from a three phase induction motor.