Omega CN155, CN154, CN158 Dimension of current transformer CT for heater break alarm, Mounting

(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.

Dimension of current transformer (CT) for heater break alarm

• For 0-30A (CTL-6-S) ...................................For 0-50A (CTL-12-S36-8)

Note: The environmental conditions belong to the installation category II of IEC 664 and the degree of pollution is 2.

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

CAUTION

15

φ5.8

21

30

40

2-5. Wiring

			2.8				30
		7.5			9
				25
10.5					40
		3
	10
	2- φ 3.5				2-M3 depth 4
							30
						40

(unit : mm)

WARNING

φ2.36

2.36

φ 12

φ 12

15

7.5

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.

•	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.

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.

PV

SV˚C

OUT AT AH AH/HB MAN STBY COM

ENT

MAN

• Avoid touching the wired terminal and charged devices while

supplying power.

(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 5Ω 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

2-4. External dimensions and panel cutout

CN154/CN155 External dimensions			CN154/CN155 Panel cutout
	110
10	100			130 min.
			92	+0.8
		+0.8		0
			0
		92
96		91.6		min.
				130

	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 1mm2 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 100Ω and with wire thicker than 2mm2.

2-6. Terminal arrangement

SR73A

422A

485

CN158/CN159 External dimensions

CN158/CN159 Panel cutout

SG

SG	1	21
		SB

31

11L

Power

	110
10	100
	+0.8 0
	92
height 96	height 91.6
⋅	⋅
width 48	width 44.6

+0.6

45 0

130 min.

(48 x N-3) +10.0

+0.8

92 0

When N pieces are installed laterally. N= number

SD+

SD–

RD+

RD–

RTD

IN PUT

+	2	22
–	3	23

CT

424

525

626

+A	7	27
TC•mV
V•mA	8	28
–B
	9	29

32

33

34

35

36

37

38

39

12N

13

14COM+

CONTROL

15 NO – OUTPUT

16 NC

17

18COM

19	AH	ALARM
		OUTPUT

(unit : mm)

B 10 30

40

20AL/HB

- 3 -