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G8MNY > TECH 17.08.26 15:44l 92 Lines 4415 Bytes #7 (0) @ WW
BID : 2471_GB7CIP
Subj: Rotator Yamato YB101 info
Path: JH4XSY<N3HYM<IW2OHX<PI8ZTM<CX2SA<ED1ZAC<GB7CIP
Sent: 260817/0639Z @:GB7CIP.#32.GBR.EURO #:2471 [Caterham Surrey GBR] $:2471_GB
From: G8MNY@GB7CIP.#32.GBR.EURO
To : TECH@WW
By G8MNY (Updated Jul 19)
(8 Bit ASCII graphics use code page 437 or 850, Terminal Font)
This is quite a complex circuit design with 2 relays and uniquely it is only a
3 wire system for proper comparison pot type controller.
(=ｺ\ Stub Mast
ｺ ｳ Clamp Castings
_.---------------. __(=ｺ_ｳ_
_.-'.- ' " `;_ _.-' | / \
.-' \__ . -'/_/.-' | 3 Wire (__________) ROTATOR
ﾃﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄｿ-" _.:| Cable ｳ________ｳ
ｳ ｳ _..-:'-'" ｳ ｺ=) ﾀ option flat
ﾀﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾁ:'-"' Support ｳ ｺ base plate
CONTROLLER Mast Clamp \ｺ=) unbolt clamp
DIAGRAM
ﾚﾄﾄﾄﾄﾄoﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾂﾄﾄﾄﾄﾄﾄ* 2
RUN ｺ( red 2 MOTOR & ｳ
rﾚo/ oｿr ｺ( FLOATING ｳ
ｳ __ ｳw ｺ( 27V BRIDGE ｳ
Nﾁo oﾁﾄｿｺ( red 1 SUPPLY ｳ
START )ｺﾀﾄﾄﾄﾄﾄoﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾂﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄ)ﾄﾄﾄﾄｿ
)ｺ +ﾚﾄﾄﾂﾄﾄﾄﾄﾄﾄﾄﾄﾄﾂﾄﾄﾄﾄﾂﾄﾄﾄﾄﾄｿ R3 R2 ｳ
240V )ｺﾚﾄﾄﾄﾄoﾄﾄﾄﾄﾂﾄﾄﾄｿ ｳ R2 ｳ R5 ｳ 10K 1K ｳ
)ｺ( bl 3 ｳ ｳ ｳ 1K ｳ 2M2 ｳ ｳ/ ｳ ｳ
1A r )ｺ( _ｳ_ _ｳ_ ｳ o ｳ ﾃﾄﾄﾄﾄﾄ)ﾄﾄﾄｴ Q1 _ｳ_ ｳ
Lﾄﾄoﾄoﾄﾄﾙｺ(12-0-12V/_\ \_/ ｳ ｳrd ｳ _ｳ_ ｳ ｳ\e /_\D9 ｳ
Fuse ｺ(__o4 -ｳD4 ｳ+ ｳ _ｳ_LED ｳ \_/D2 ｳ _ｳ_D1 ｳ ｳ
ｺ( ｳYe ﾚﾄﾄｴ -7ﾃﾄﾄｴ \_/ ｳ _ｳ_D3 ｳ \_/ VR1 ｳ ｳ
ｺ( ｳ ｳ _ｳ_ _ｳ_ ｳ ｳbn Q3ｳ \_/ 7ｳ 2 ｳ ﾚﾄﾄ3K3ﾄｴ ｳ
ｺ( ｳ 5 ｳ \_/ /_\ ｳ o NPN\ｳ__ｳ 6 ,/'ﾃﾄﾄﾄﾄｴ CONTROL _ｳ_ZD1ｳ
ﾀﾄﾄ)ﾄoﾄ)ﾄﾄﾁﾄﾄﾄﾙ ｳ ｳ _____ e/ｳ ﾃﾄﾄ<741ｳ 3 ｳ POT \_/, ｳ
bl ｳ ｳ ｳ ﾃﾄｴ RUN ﾃﾄｴ ｳ `\.ﾃﾄﾂﾄﾄ)ﾄ>10K ~ｳ~ ｳ
ｳ ｳ ｳ ｳ ｳRELAYｳ e\ｳ__ﾃﾄｴﾃﾄﾄ)ﾄﾄｴ ｳ ﾀﾄﾄ3K3ﾄｴ ｳ
ｳ ｳ ｳ ｳ ﾀﾄﾄﾄﾄﾄﾙ /ｳ 3n3 ｳ4 ｳ ｳ VR2_ｳ_D8 ｳ
ｳ ｳ - ｳ ｳ PNPｳ Q4 ｳ ｳ ｳ /_\ ｳ
ｳ ﾃﾄﾄﾄﾄﾄﾄﾄﾄﾄ)ﾄﾄ)ﾄﾄﾄﾄﾄﾄﾄﾄﾄﾁﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾙ ｳ+ ｳ ｳ ｳ
ｳ ===C2 C3=== ｳ C4 === ｳ R1 1k ｳ
ｳ +ｳ10u 10uｳ- ｳ 4u7 ｳ ｳ ﾀﾄﾄﾄﾄﾁ* 1
ﾀﾄﾄﾄﾁﾄﾄﾄﾄﾄﾄﾄﾄﾄﾁﾄﾄﾁﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾁﾄﾄﾁﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄ* 3
SU-2000A PCB
o = PCB Connection * = External Connection
ROTATOR DIAGRAM
2 *ﾄﾂﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾂﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾂﾄﾄﾄﾄｿ
1K _______ｳ_______ ｳ+ ｳ
_ｳ_ ｳDIRECTION RELAYｳ === ｳ
/_\ ﾀﾄﾄﾄﾄﾄﾄﾄﾂﾄﾄﾄﾄﾄﾄﾄﾙ ｳ10u ｳ
ｳ ﾃﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾙ ｳ
ｳ _ｳ_ ｳ
ｳ \_/ ｳ
ﾃﾄﾄﾄﾄｿ ｳ ｳ
_ｳ_ ROT ｳ/ AC ﾚﾄﾄﾄﾄﾄﾁﾄﾄｿ
\_/, POT<ﾄﾂﾄｴ Q2 MOTOR )|| ||(
~ｳ~ 10K ｳ ｳ\e 2x 8R )|| ||(
ﾃﾄﾄﾄﾄﾙ ｳ _ｳ_ )|| ||(
_ｳ_ ｳ \_/ )|| ||(
/_\ ｳ ｳ ｳ ｳ
ｳ ｳ ｳ ﾚﾄﾄﾄﾄｴ 50V AC ｳ
1K ｳ ｳ o === 68uF ｳ
1 *ﾄﾁﾄﾄﾄﾄﾄﾄﾄﾄ)ﾄﾄﾄﾁﾄ./'o____ｳ________ｳ
3 *ﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾙ Relay
OPERATION
After rotating the HEADING pot to the desired direction and pressing the START
button the LED is lit from the +ve rail & the RUN relay operates holding the
mains on, as the bridge will be off balance & either + or - from the opamp will
via Q2 or Q3 will hold the RUN relay on until a balance is reached.
When the op amp output is high Q1 is turned on putting some DC unbalance on the
motor feed. This is sensed during the bridge unpowered half cycle in the motor
head unit and turns on Q2 transistor to operate the DIRECTION relay. The
DIRECTION relay determines the AC phase & hence direction of rotation of the 2
pole AC motor.
Preset pots VR1 & VR2 set the end scale length for the control pot to match the
rotator pot.
FAULTS
I have experienced the 4 white blob type diodes in the rotator head unit
falling apart with corrosion, despite the rest of the circuit being in clean
condition.
Why Don't U send an interesting Bul?
73 de John G8MNY @ GB7CIP
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