Beck 14-100, Инструкция по эксплуатации

Страница: 82 / 92

82
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CPS - 5
R
80-1403-01, Rev. 3
To remove the CPS-5 :
1. Run the actuator to its midpoint of travel with
the local Handswitch. (If the standard rotation
of 100° has been reduced to 80°, the midpoint
of travel is 40°.)
2. Disconnect 120 V ac power to the actuator.
Remove the terminal, DCM-3 compartment
and control end covers (1/2" bolt heads).
3. Record the wire colors on the terminal block
of the CPS-5 (see illustration, upper right),
then disconnect the wires. The terminals are
spring-loaded. To remove a wire, press the
tip of a small screwactuatorr into the slot at
the top of the small lever. Push down to open
the spring-loaded contact and release the
wire.
4. Pull the wires from the transformer (see
illustration, middle right) back through the
wire hole in the CPS-5.
5. Loosen and remove the 3 hex studs that
clamp the CPS-5 in place. Ensure that the
inboard hex stud is not loosened as the
outboard stud is loosened.
6. Slide the CPS‑5 stator assembly off the three
mounting bolts.
7. Note the position of the rotor clamp, then
loosen the rotor clamp screw and remove the
rotor from the shaft.
To install the new CPS-5 :
1. Remove the rotor from the replacement
CPS-5 assembly. Slide the rotor, clamp end
first, onto the control shaft as close to the
mounting plate as possible. Leave the clamp
loose. Position the clamp in the same general
location as the one removed previously.
2. Slide the new CPS-5 assembly over the studs
and rotor. Replace the hex nuts but do not
tighten. Carefully slide the rotor back into the
CPS-5 assembly. Twist the rotor while sliding
to prevent damage to the assembly. Tighten
hex nuts to 5 Ib-ft (6.8 N•m).
3. Thread the wires through the wire holes in the
CPS-5 and reconnect them to the transformer
and terminal block.
4. Restore 120 V ac power to the actuator and
connect a meter to the output.
5. Insert a 0.031" feeler gauge between the rotor
clamp and stator. Position the clamp 0.031"
from the stator.
6. Rotate the rotor (only a minor adjustment
should be necessary) on the control shaft
until the output voltage measured across TP4
and TP1 (see illustration at right) reads 50%
(approx. 3 volts) of the signal span. Tighten
clamp to 5 lb-in (0.56 N•m) torque.
7. Perform a position calibration procedure.
Location of DCM-3 Test Points TP1 & TP4
CPS-5 Components
+ - R
J2
J1
8
7
6
5
4
3
2
1
SIG +V -V CO
M
J3
BRN
RED
OR
G
R
ZER
O
SP
AN
G
Ferrite
Rotor Clamp
Terminal
Block
Ferrite Sensor
(Stator)
Ferrite Sensor
(Rotor)
Transformer
Terminals
TP4
TP1
MAINTENANCE
Component Replacement