Onicon System-40-BAC BTU Manual de usuario descargar pdf (Pagina 14)

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax +1 (727) 442-5699 • [email protected]

System-40-BAC BTU Meter Manual 03/15 - 1045-2 Page 14

3.5 POWER AND SIGNAL WIRING CONNECTIONS

The System-40 is provided with 4 glands on the right hand side of the enclosure for power and

signal cables. Each includes a strain relief for securing the cabling and a sealing cap. The power

cable should enter the enclosure through the bottom gland. Do not remove the sealing caps from

unused cable glands. To access the wiring connections, remove the 4 cover screws shown below.

Cover Screws

Install power

cable here

Cover Screws

1 2 3 4 5 6 7 8 1 2 3

SERIAL

TB3

TB2

4321 4321

1 2 1 2 1 2 1 2

TB8

TB7 TB6

TB5

SW6 SW7 SW2 SW1

C34

C33

DS3

SERIAL

GRD

DS2

R60

JMP5

CAUTION

INSTALL + SIDE UP

CR2032 BATTERY

BAT1

Internal RTD

(Flow)

External RTD

24V AC/DC (+)

24V COMMON (-)

AUX 1 (+)

AUX 1 (-)

AUX 2 (+)

AUX 2 (-)

AUX 3 (+)

AUX 3 (-)

RS485 (+)

RS485 (-)

RS485 COMMON

TB1 TB4

COMMISSIONING MICROPROCESSOR

RESET

RS485 Termination

1 - 2 = 120 Ω

2 - 3 = None

System-40-BAC Enclosure Label

1048 / 33354

02-15

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax +1 (727) 442-5699

www.onicon.com • [email protected]

Actual Size - 4.125” x 2.875”

Cutline

Remote (external) Temperature Sensor

Name Terminal # Description

1000 ohm TB2-1 RTD signal wire

Not used TB2-2 No Connection

Not used TB2-3 No Connection

1000 ohm RTD TB2-4 RTD signal wire

Flow (internal) Temperature Sensor*

Name Terminal # Description

1000 ohm TB3-1 RTD signal wire

Not used TB3-2 No Connection

Not used TB3-3 No Connection

1000 ohm RTD TB3-4 RTD signal wire

Power and Signal Inputs (18 - 22 AWG wire)

Name Terminal # Description

24V ac/dc (+) TB1-1 12 - 36Vac, 50/60Hz, 15 VA

max.

12-42Vdc, 15W max.

24V ac/dc Common (-) TB1-2

Aux Pulse Input # 1 (+) TB1-3

For use with open collector

sinking and dry contact ouputs

Pulse Duration: 50ms min.

Sinking Current: 1mA max.

Aux Pulse Input # 1 (-) TB1-4

Aux Pulse Input # 2 (+) TB1-5

Aux Pulse Input # 2 (-) TB1-6

Aux Pulse Input # 3 (+) TB1-7

Aux Pulse Input # 3 (-) TB1-8

RS485 (20 - 24 AWG wire)

Name TB4 Description

RS485 B (+) TB4-1

RS485 Unit Load = 1/4

Recommended Devices

per Segment = 32

RS485 A (-) TB4-2

RS485 Common TB4-3

RS485 Termination Resistor

Name JMP5 Description

120 ohm Position 1

Jumper Position 1 & 2

= 120 ohms

120 ohm Position 2

None Position 3 Jumper Position 2 & 3

= No Termination

* This sensor must be in the same

pipe as the ow sensor.

IMPORTANT NOTE

Open isolation valves, leak test and purge the piping system of air prior to wiring the meter.

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