ENM 3 Transmitter forfrequency and rotational speed

Manual 42/14-31 EN Rev. 01

6 ENM 3, Transmitter for frequency and rotational speed 42/14-31 EN

Fig. 2 19“ plug-in card1 Jacks for the frequency input Bu12 Change-over switch measure/test3 Potentiometer for trigger level (R13)4 Test jacks for pulse output Bu35 Potentiometer for lower range value (R64)6 Potentiometer for upper range value (R54)7 Test jacks for output Bu28 Rated plate

4.1.2 19“ plug-in card in surface-mounting case IP 20

Fig. 3 19“ plug-in card in surface-mounting case IP 20

The design IP 20 surface-mounting case consists of a plasticscase into the 19“ plug-in card, described in Section 4.1.1, isplugged and secured with 2 screws. In the interface unit blade-type terminals 6.3 × 0.8 mm for tab connectors or screw termi-nals for wires 2.5 mm2 are optionally available. The louvers inthe cover of the 19“ plug-in card covered by a flap.

4.1.3 Field case IP 54

The plastics case with degree of protection IP 54 consists ofthe lower part (1) with equipped printed circuit boards and thecase cover (Fig. 4).After removing the case cover the manual control elements areaccessible. Screw terminals are soldered onto the printed cir-cuit boards for connection wires up to 2,5 mm2.

Fig. 4 ENM 3 in the field case IP 54 (without case cover)1 Case lower part2 Motherboard3 Constant voltage supply source4 Terminals5 Potentiometer for trigger level (R13)5 Potentiometer for lower range value (R64)7 Potentiometer for upper range value (R54)

42/14-31 EN ENM 3, Transmitter for frequency and rotational speed

12 Wiring diagrams, circuit diagrams

21

ENM 3, Transmitter for frequency and rotational speed 42/14-31 EN

Fig. 18Circuit diagram for transmitter ENM3, in version field case IP 54input stage A with constant voltage source and 2 alarm signalling units

22

2) R

4, R

10 o

mitt

ed w

hen

LP.0

342

049.

9 is

fit-

ted

and

the

jum

per

63/6

4 is

clo

sed.

only

whe

n fit

ting.

42/14-31 EN ENM 3, Transmitter for frequency and rotational speed 23

Fig. 19 Circuit diagram for transmitter ENM3, version field case IP 54input stage B

2) W

hen

fittin

g 03

42 0

49 9

, R4

and

R10

are

om

itted

an

d ju

mpe

r 63

/64

is c

lose

d.

only

whe

n fit

ting.

ENM 3, Transmitter for frequency and rotational speed 42/14-31 EN

Fig. 20Circuit diagram for transmitter ENM3, version 19“ plug-in cardand surface-mounting case IP 20, input stage A

24

Pul

se-

outp

utT

est f

erqu

ency

Tes

t

Output

With ..........connected

With

.....

.....c

onne

cted

42/14-31 EN ENM 3, Transmitter for frequency and rotational speed

13 Spare parts

25

ENM 3, Transmitter for frequency and rotational speed 42/14-31 EN26

42/14-31 EN ENM 3, Transmitter for frequency and rotational speed

14 Dimensional drawings

top-had rail to DIN EN 50 022high 15 mm or 7.5 mm

optional terminal 2.5 mm ortab connector 6.3/2.8 x 0.8 mm

2

with 19" plug-in-card

View X

ENZ-13014

205

118

132.

5

14 23

8

182

5.5

158

150

32.5

334 1

9532

.58

7

X

R4

a220

Pg11118

250

6,4 33

70

Z-13653

19“plug-in cardDimension a ≈ 245 mm with cable gland Pg11field mounting case IP 54

27

171,87 (Stecker/Connector D)175,47 (Stecker/Connector F)

M2,5 x 10

100

2 Z-12979

128,

4

122,

5

20

4T

14

ABB Automation Products GmbHHöseler Platz 2D-42579 HeiligenhausPhone +49(0)20 56 12 - 51 81Fax +49(0)20 56 12 - 50 81http://www.abb.com

Subject to technical changesPrinted in the Fed. R. of Germany

42/14-31 EN Rev. 01Edition 03.01

Subject to technical changes.

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