Atlas Copco QAS38 - Page 25

CIRCUIT DIAGRAM
2954 9020 00 25
B11 Speed sensor N12 Automatic voltage regulator S2b Emergency stop
F1-5 Fuse 4A P1-3 Amperemeter S4 Voltmeter selector switch
G3 Alternator P4 Voltmeter S11 Frequency selector switch 50Hz/60Hz
Kx Plant contactor P5 Frequencymeter 45-65Hz T1-3 Current transformer 500A/5A
K11 Auxiliary relay voltage selection Q1.1 Circuit breaker 3-pole X1 Terminal board
(lower voltage) Q1.2 Circuit breaker 3-pole X2 Outlet socket
K12 Auxiliary relay voltage selection Q2-3 Circuit breaker 50A/2-pole X3 Outlet socket
(higher voltage) Q4 Circuit breaker 20A/1-pole X4 Outlet socket
K13 Contactor R11 Supply voltage adjust potentiometer X25 Terminal strip
N11 Speed controller Sx Remote start/stop switch Y11 Actuator
a3
118
a3
103
a3
118
a6
12
L2L1
3
2
L3 N
x0 x0 x0 x6
Z54
60Hz
237 238 239
G3
N12
U1
V1
W1
N1
F2
F3
P4
4
6
8
3
5
7
c1
c2
>>
>>
>>
EA
a0
a0
a6
N1
a6
124
a0
127
a0
126
a0
125
Z54
W1
V1
F1
21
a0
U1
F5
3
a0
110
a0
110
a0
106
105
F4
K13
A1
A2
K11
A1
A2
K12
A1
A2
1
4
2
bx0
bx0
109
Z54
L3
X0
L2
X0
L1
X0
L1
Y0
L2
Y0
L3
Y0
Q1.1
a3
104
Y0
U1
Y0
V1
Y0
W1
c1
c2
>>
>>
>>
EA
Q1.2
X1
11
12 14
K11
L1 L2 L3 N PE
1
S4
a0
129
a0
128
1
2
6
10
4
8
12
11
9
7
5
3
A
V
P5
Hz
a6
124
A
A
P3
P2
P1
141
142
143
153
152
151
a8
a8
a8
a8
a8
a8
1
2
8
7
S10
5
6
12
11
10
9
4
3
2
4
3
12
11
6
5
8
7
9
10
1
2
4
3
12
11
6
5
8
7
9
10
1
See note 1
X2 X3 X4
2L1
f0
2L2
f0
3L1
f0
3L2
f0
N
f54 f6
>>
N1
4L2
f54
20A
c0
Q4
f6
c54
N1
c6
2 1
L2L1L2
K13
L1N1
4 3
f0
f0
f0
f0
h6
6 5
8 7
>> >>
50A
Q2
>> >>
50A
Q3
A
B
C
D
E
LEGEND :
Wire size:
Colour code:
a = 1 mm
2
aa = 0.5 mm
2
b = 1.5 mm
2
c = 2.5 mm
2
d = 4 mm
2
e = 6 mm
2
f = 10 mm
2
g = 16 mm
2
h = 25 mm
2
i = 35 mm
2
j = 50 mm
2
k = 70 mm
2
l = 95 mm
2
bx = 1.5 mm
2
NSGAFOeU
0 = black
1 = brown
2 = red
3 = orange
4 = yellow
5 = green
6 = blue
7 = purple
8 = grey
9 = white
54 = green/yellow
7 7
T1
T2 T3