WIRING DI A GRAMS
74
Elec
tri
cal con
nec
tions for upmast and downmast
trans
ceiver sys
tems are de
tailed on the fol
low
ing
wir ing di a grams:
(1) Figure 14e - Motor Connection (See CAUTION
below).
(2) Figure 15e - Connections between the downmast
Transceiver CTX-A9 and the upmast Turning
Mechanism and Soft Start Unit (if fitted).
(a) For details of connections between the Soft
Start Unit and the Turning Mechanism for
M k V I T u r n i n g M e c h a n i s m s r e f e r t o
publication KH 1250. Figure 18 shows a
typical arrangement with a Nucleus 3 Display
and Dual Interswitch Unit. Figure 21 shows a
typical arrangement with a Nucleus 3 Display
and Radar Interswitch Unit (RIU).
(b) For details of connections between the Soft
Start Unit or Inverter and the Turning
Mechanism for Mk VII Turning Mechanisms
refer to publication KH 1253.
(3) Figures 16e and 17e - Connections for Nucleus 3
systems using 38-core composite cable as
follows:
(a) C o n n e c t i o n s b e t we e n t h e C T X - A 9
Transceiver and the Nucleus 3 Display.
(b) Connections for an interswitched system, via
the Dual Interswitch Unit.
(4) Figures 19e and 20e - Connections for Nucleus 3
systems using 12-core composite cable and the
CANbus interface as follows:
(a) C o n n e c t i o n s b e t we e n t h e C T X - A 9
Transceiver and the Nucleus 3 Display.
(b) Connections for an interswitched system, via
the Radar Interswitch Unit (RIU).
NOTE:
RS232 serial control can be used for changing the
programme of the Tx Microcontroller PCB. It does not
control the transceiver.
CAUTION
There are two different types of Brown motor
w hich may be used in the MkVI Turning
Mechanism. Each type of motor has different
connections. (Refer to Figure 14e for details).
Take Care to ensure that the 3-phase Motor
Connections are made correctly for the type of
motor used.
IF THE MOTOR IS IDENTIFIED AS AN "Old Style"
BROWN MOTOR (SEE BELOW), DO NOT USE THE
WIRING DIAGRAM ON THE INSIDE OF THE
COVER, AS THIS COULD DAMAGE THE MOTOR.
THE "Old Style" BROWN MOTOR MUST BE
WIRED AS SHOWN ON FIGURE 14e.
If there is any doubt about which type of Motor is
being installed, assume that it is the "Old Style"
type and wire it accordingly(see Figure 14e). If the
motor does not turn when wired as the "Old Style"
motor, then fit the links as shown for the "New
Style" motor.
55
The type of Motor can be identified as follows:
(1) First remove the wiring cover from the motor
(2) Old style motors have wires U5, V5, W5
connected to connectors U1, V1, W1 respectively.
(3) New style motors DO NOT have any wires marked
U5, V5, W5.
CHECKS AFTER FITTING
75
The upmast turn ing mech a nism must be checked for
se
cu
rity and free
dom to ro
tate. The downmast
trans ceiver must be checked for se cu rity, ac ces si bil ity, and
ca bling ‘runs’.
76
En sure that all ca bles are se cured to their as so ci ated
en try point and that screened ca bles are earthed to
their re spected units.
77
All ca ble en tries must be checked for signs of fret ting,
chaf ing or dam age, and sub se quently sealed with a
mas tic com pound.
Amdt 1
4e.23
Sep 01
KH 2020
Chap 4e
Summary of Contents for Kelvin Hughes Nucleus 3 5000 Series
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