DRPI Flashcards
1
Q
Describe DRPI
A
- 42 coil assemblies split into two groups (21 A coils, 21 B coils)
- as stainless steel rod drive shaft passes between coil, impedance changes (resis->up, current->down)
- coil info sent to data cabinet (A or B)(53 encoder cards, one per Rod)(cabinet A for A coils……)
- data cab info->3 central control cards
- every six steps, LED’s moves
2
Q
What is accuracy of DRPI?
Half accuracy?
A
+/- 4 steps, both coils
A only= +4, -10 steps
B only= -4, +10 steps
3
Q
How many coils penetrated when rods fully inserted into core?
A
2 coils per Rod ===> 106 (53 x 2)
4
Q
Power supply to DRPI?
A
F , normal
G, backup
5
Q
What does top LED mean
A
General warning urgent and non-urgent conditions
