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G8MNY > TECH 05.04.11 07:49l 68 Lines 3517 Bytes #999 (0) @ WW
BID : 11885_GB7CIP
Read: GUEST
Subj: Rotator Western WE1145 info
Path: IZ3LSV<IK2XDE<DB0RES<ON0AR<UA6ADV<GB7CIP
Sent: 110404/2219Z @:GB7CIP.#32.GBR.EU #:11885 [Caterham] $:11885_GB7CIP
From: G8MNY@GB7CIP.#32.GBR.EU
To : TECH@WW
By G8MNY (Updated Nov 05)
(8 Bit ASCII graphics use code page 437 or 850, Terminal Font)
\
Clamp Castings
. ---------------. ___=__
_.-'.- ' " `;_ _.-' | / \
.-' \__ . -'/_/.-' | 5 Wire (__________) ROTATOR
Ŀ-" _.:| Cable ________
_..-:'-'" = option flat
:'-"' Support base plate
CONTROLLER Mast Clamp \= remove clamp
This is quite a complex circuit design with 2 relays etc.
DIAGRAM
o* 5 *Ŀ
RUN ( red 5 MOTOR & C1 ===
ro/'or ( FLOATING 4u7 +Ŀ 2x 8
__ w( 27V BRIDGE __ * 4 *())))Ĵ
No oĿ( red 4 SUPPLY D1 /_\ CW2 o ===68uF =====
START )o)o/'o* 3 *())))Ĵ
) 3 8 3k MOTOR
240V )oĿ R2 oVR1* 2 *Ŀ
1A r )( bl __ __ 1k2 HEADING /\ ROTATOR<
Looٺ(12-0-12V /_\ \_/ CONTROL o>POT 10k 3k POT 10k
Fuse (__o2 - + SUPPLY 9 o)VR2* 1 *
( Ye Ĵ Ŀ 10 /\
( __ __ R2 Ŀ RESISTANCE
( 1 \_/ /_\ 1k2 CW RELAY R3 BRIDGE
E)o) o 10k
__ bl D2-5 <-__ Ĵ X2
//// Ŀ <-\_/ \
RUN RELAY LED Ĵ
CW1 o o __ e/Q2 \Q1
X1 )o/'o /_\ Ĵ
D7 e/ __
D6/_\
FU200 PCB
X=No of Contacts o = PCB Connection * = External Connection
OPERATION
After rotating the HEADING pot to the desired direction & pressing the START
button the LED is lit. Then the CW RELAY (Clockwise) either operates or stays
released, this determines the AC phase direction selected for the motor. In
either case the RUN relay is powered until the balance point of the 2 pot
resistance bridge is reached when Q1, Q2, & the CW relay change state. The RUN
relay is then fast released with reverse power & the mains supply is
disconnected & the LED extinguishes.
Preset pots VR1 & VR2 set the scale length for both the HEADING & ROTATOR pots,
& should be set so that the rotator always stops before the mechanical end stop
is reached at either end of the HEADING pot.
MODS
As with other rotators the motor is well over run, so if you want more than 2
mins run time add a high wattage low value R (e.g. 8 10W) in series with the
CW2 switch common, this will increase motor run time before it overheats or
burns out!
Why Don't U send an interesting Bul?
73 de John G8MNY @ GB7CIP
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