Aux Positioner Lecture Notes

transformers (PCT) serve as transducers of angular values. Signals of sine shape from
PCT come to the BT-stator windings.
The axis of rotor BT is mechanically connected to a corresponding positioner axis
of rotation. With a turn of the BT rotor, the phase of output signals of the measuring
windings located on a rotor, changes proportionally to the angle of rotation. PCT trans-
forms the value of a phase into the1S-digit digital code which is delivered to the ALU da-
tabase bus, general for all PCT,
PCT are bought articles and their principle of action, and also the order of opera-
tion is presented in the PCT Description.
4.5 Control system power unit.
Control system power unit is intended for the formation of the feeding voltage
necessary for functioning of the control system. The basic schematic diagram of the
power unit is presented in Annex.
The unit is placed in the CS rack.
The unit consists of the following voltage transformers:
- AC/DC of 5-25-5 type for feeding of control system logic devices;
- AC/DC of 5-320-24 type for feeding of motors power circuits;
- DC/DC of DKE15B-15 type for feeding of operational amplifiers.
Parameters of transformers are presented in Table 2
Type Input voltage
(v)
Table 2
The toggle-switch "Power supply" and indicators of feeding voltage are located
on the front panel of the power unit.
Output volt-
age (V)
Output cur-
rent (A)
s-25-5 AC 200-240 DC5 5
s-320-24 AC 200-240 DC 24 12.5
DKE15B-15 DC 18-36 DC t15 r0.500
20