2. Reading method of electric circuit
diagram
2.1
Notational convention
■Conditions
1. Crane : traveling condition
2. PTO switch : OFF
3. Boom : fully retracted, over-front
4. Hook blocks : two-blocking
5. Starter switch : OFF
6. Control levers : neutral positions
■Wire label
"Wire label" consists of the wire number and the
wire distinction symbol.
The wire number is all the same if there is
conduction.
Notation is discriminated by the circuit usage. Refer
the below.
1）Signal line
○○○ AA
Example：(001AA) W, (035AA) BR, (106AA) Y/L,
(1000AA) G/R
2）Power supply line
Main power supply
A ○○ AA
Example：(A01AA)
3）GND line
Wiring from GND seat connector to GND terminal.
B ○○ AA
Example：(B01AA), (B20AA)
4）Cable line、Shield line
Cabtire cable, Solid wire cable (thick), etc.
・Cable line
C ○○ – ○○○
・Shield line
S ○○ – ○○○
Example：(C01-001), (S016-045)
5）
Shield line(GND)
Wire to establish GND by diverging another wire to
the shield line
S ○○ – AA
Example：(S016-AA), (S016-AB)
6）Joint label
Same with "Wire label"
J ○○○ AA
Example：J001AA, J035AA, J106AA, J1000AA,
JC01AA,JS016AA, JB01AA
7）Node name at diverging point
N ○○○
■Wire
1）Indication of wire size
Indicate the wire size other than the indication at
[NOTICE].
2）Indication of wire type
Indicate the wire type other than the indication at
[NOTICE].
3）Indication of wire color
Indicate the wire color as seen below and its
combination (base color/marked color).
Symbol Color Symbol Color
B Black O Orange
W White BR Brown
R Red LG Light green
G Green SB Sky blue
Y Yellow GR Gray
L Blue CH Chocolate
V Violet TO Transparent
P Pink
■Protective layer name
Add protective layer name on wire route other than
rolling with tape.
Protective layer name (○ is the diameter of
protective layer)
・Vinyl tube: Vinyl(Ø○×Ø○)
・Corrugated tube: COTØ○
・Spiral tube: STØ○
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