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Omega CN155 User Manual

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- 3 -
(5) Near high voltage power lines or where inductive
interference can affect the operation of the product.
(6) Dew drops or direct exposure to sun light.
(7) Where the elevation is in excess of 2,000 m.
2-2. Mounting
(1) Machine the mounting hole by referring to panel cutout in
section 2-4.
(2) Applicable thickness of the mounting panel is from 1.0 to 3.5
mm.
(3) As this product provides mounting fixture, insert the product
from the front panel for installation.
2-3. How to remove the instrument out of the case
There is no need to remove your
CN150 series controllers out
of the case.  Nevertheless, should the
need arise, for example, for
replacement, follow the steps
described below:
Insert a minus screwdriver of 6mm ~
9mm into the opening (where
packing is exposed) of the front case
and rotate the screwdriver while
pushing up the lock lever behind the
packing.  Once the instrument comes
out by a few millimeters, you can
remove it by hand.
2-4. External dimensions and panel cutout
CN154/CN155  External dimensions             CN154/CN155  Panel cutout 
CN158/CN159  External dimensions                CN158/CN159 Panel cutout 
(unit : mm)
Note:
The environmental conditions belong to the installation
category II of IEC 664 and the degree of pollution is 2.
When the instrument is removed/replaced in the case, make sure
the power is off.  If it is done while the power is on, it may lead
to problems with the product and/or other problems.
CAUTION
ENT
MAN
PV
SV
˚C
OUT
AT
AH AH/HB
MAN STBY COM
110
96 91.6
100
10
130 min.
130 min.
92
+0.8
  0
92
+0.8   0
110
100
10
45
+0.6
  0
(48 x N-3)
+1.0
  0
92
+0.8   0
92
+0.8
  0
130 min.
When N pieces are 
installed laterally.
N= number 
height 96
× 
 
width 48
height 91.6
×
width 44.6
Dimension of current transformer (CT) for heater break
alarm
• For 0-30A (CTL-6-S)...................................For 0-50A (CTL-12-S36-8) 
(unit : mm)
2-5. Wiring
(1) Wiring operation should be done according to the instruction
for the terminal arrangement in section 2-6. Exercise care
that no wrong connection is made.
(2) Crimp terminal should accommodate the M3.5 screw and
should have a width of less than 7mm.
(3) For thermocouple input, select the compensation wire
suitable to the thermocouple type.
(4) For R. T. D. input, leads should be less than 5
Ω in resistance
and three leads should have the same resistance.
(5) Input signal line should be conducted safely apart from the
high voltage power line.
(6) Shield wiring (single point grounding) is effective for static
induction noise.
(7) Short interval twisted pair wire for input signal is effective
for electromagnetic induction noise. 
(8) For power line, use wire or cable which is 1mm
2
or more in
sectional area and of which the performance is equal to or
higher than that of 600V vinyl insulated wire. 
(9) Earth grounding should be performed with earth resistance
less than 100
Ω and with wire thicker than 2mm
2
.
2-6. Terminal arrangement
SR73A
15
21
30
40
2.8
3
10.5
7.5
25
10
φ 
5.8
2- 
φ 
3.5
 φ 
12
 φ 
2.36
φ
 
12
9
40
15
7.5
2.36
30
30
40
2-M3 depth 4
• Always disconnect this product from any power source
during wiring operation to prevent electrical shock.
• Be certain that the protective conductor terminal (      ) is
properly grounded.  Otherwise, a serious electric shock may
result.
• Avoid touching the wired terminal and charged devices while
supplying power.
WARNING
10
20
19
18
17
16
15
14
13
12
11
9
8
7
6
5
4
3
2
1
30
29
28
27
26
25
24
23
22
21
40
39
38
37
36
35
34
33
32
31
422A
485
RD–
RD+
SD–
–
SD+
+
SG
SG
L
N
COM+
NC
COM
AL/HB
AH
NO   –
Power
CONTROL
OUTPUT
ALARM
OUTPUT
IN PUT
RTD
TC•mV
V•mA
+A
–B
B
SB
CT
~