E-bus digital room sensor, Troubleshooting, Operator interface 8 – Orion System E-BUS Digital Room v.1 User Manual

Page 8: Figure 10: temperature/resistance testing, Measuring digital sensor resistance, E-bus cable from sensor disconnected, 2 uf

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background image

E-BUS DIGITAL ROOM SENSOR

Operator Interface

8

Troubleshooting

Figure 10: Temperature/Resistance Testing

+

-

T

9302

NOTE:

,

Table 1

For This Test The Sensor Must Be Disconnected From Its E-BUS Cable

As Shown. The Meter Must Be Set To Measure Resistance In Ohms. Use
To Determine If The Sensor Is Reading The Correct Resistance Value For The
Ambient Temperature. This Resistance Value Should Match The Temperature
Value Listed Next To The Resistance Value In The Table. The Temperature Should
Be Measured With A Separate Accurate Temperature Measuring Device Located
In The Area Where The Sensor Is Currently Located.

Measuring Digital Sensor Resistance

E-BUS Cable

From Sensor

Disconnected

MADE IN USA

YS102370 R1

ModBus LCD Space Sensor

W

a

ttMaster Controls, Inc

PROGRAM

COMM

LED1

EXTERN

THERM

+12Vdc

GND

-COM

+COMM

SHLD

P1

R1

F3

U4

C18

R36

C30

D1

L1

C17

R38

R37

C19

C31

C21

TB1

X2

J3

C3

C24

C23

C1

C8

C12

C13

C14

C16

C25

C26

J2

Q2

R3

R4

R6

R8

R9

R10

R1
1

R12

R14

R13

R15

TH1

U3

X1

C27

R18

C20

D4

R17

D6

D7

R32

R33

D5

1

J1

DISP1

C15

D2

R2

R5

R7

R16

R19

R20

U6

U2

TB2

R35

2.2

uF

R18

1002

1001

1330

4751

4751

1001

1001

.1uF

9.2

1M

hz

4751

4751

LTC

35

02

.1uF

15pF

6.8uF

.1uF

10uF

3162

1502

6.8uH

1002

24F
C1025

6.8uF

6.8uF

1001

4751

.1uF

.1u

F

1000

1002

4751

.1uF

4751

A

D

M3

483

.1uF

.1uF

RS1G

X05

MICRO

CH

IP

PIC3

2M

X44

0F

512H-80

IP

T

.1u

F

10RO

10RO

470pF

X05

E-BUS Digital Room Sensor

Back View

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