Onicon System-10 BTU Meter Installation Manual

LonWorks

System-10 BTU Meter

LonWorks Network Interface Installation Guide

1500 North Belcher Road, Clearwater, FL 33765 • Tel [phone] • Fax [phone]

0654-4 / 16751

www.onicon.com • [e-mail]

07-13

1500 North Belcher Road, Clearwater, FL 33765 • Tel [phone] • Fax [phone] • [e-mail]
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TABLE OF CONTENTS

1.0 INTRODUCTION ..................................................................................................5

1.1 PURPOSE OF THIS GUIDE .......................................................................5

1.2 TYPICAL SYSTEM-10 FLOW DISPLAY ...................................................5

1.3 SPECIFICATIONS ......................................................................................5

1.4 NETWORK SIGNAL CONNECTIONS .......................................................6

1.4.1 Lon Talk ...........................................................................................6

1.4.2 Optional Network Interface with

Isolated Digital Pulse Input (Di3) ................................................... 7

1.5 NETWORK ADDRESSING .......................................................................10

1.5.1 LonWorks Network Addressing ...................................................10

1.6 COMMISSIONING THE BTU METER ....................................................10

1.6.1 Service Pin LED States ..................................................................10

1.7 LONWORKS XIF FILES ...........................................................................10

1.7.1 Output Network Variables ............................................................10

1.7.2 Integer Format Output Network Variables ................................... 11

1.7.3 Input Network Variables ............................................................... 12

1.7.4 Node Object Network Variables ...................................................12

1.7.4.1 nviRequest ....................................................................... 12

1.7.4.2 nvoStatus ......................................................................... 13

1.7.5 Resetting Totals via the Network ..................................................13

1.7.6 Rollover of Totals ..........................................................................14

2.0 NETWORK TROUBLESHOOTING TIPS ...........................................................15

2.1 TROUBLESHOOTING .............................................................................15

APPENDIX A – DRAWINGS

A-1 BTU COMPUTER BOARD

A-2 SYSTEM-10-LON BTU METER LON BOARD

A-3 LON BOARD WITH DIGITAL INPUT PULSE (Di3)

A-4/A-5 INTEGER FORMAT OUTPUT NETWORK VARIABLES (2 PAGES)

A-6 LONWORKS TWISTED PAIR NETWORK TERMINATION

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1500 North Belcher Road, Clearwater, FL 33765 • Tel [phone] • Fax [phone] • [e-mail]
System-10-LON Network Interface Installation Guide 07/13 - 0654-4 / 16751 Page 4

SECTION 1: INTRODUCTION

1.1 PURPOSE OF THIS GUIDE

The purpose of this guide is to provide installation and commissioning procedures and basic
operating and servicing instructions for the ONICON System-10 BTU Meter.

1.2 TYPICAL SYSTEM-10 BTU METER

ONICON’S System-10 is a true heat (Btu) computer which accepts data from several sensors,
performs a series of computations with that data, and displays and/or transmits the results as an
indication of the amount of heat (Btu’s) being transferred per unit time or as a totalized amount.

Local display of flow, temperature and

POWER

3864

SCROLL RESET PROGRAM

SYSTEM-10

BTU METER

ONICON

energy data

FLOW DIRECTION

flow meter purchased

24 VAC INPUT

Lon Talk

COMMUNICATIONS

TO NETWORK

ONICON insertion

separately

24 OR 120 VAC

Input Power

Individual Chiller

or Boiler

RETURN

SUPPLY

RETURN

TEMP

SENSOR

SUPPLY

TEMP

SENSOR

System

Mains

1.3 SPECIFICATIONS

LON TALK NETWORK INTERFACE

Twisted Pair / Free Topology
Transceiver: TP/FT-10F, 2-wire, non-polarized, transformer isolated connection
Device Address: 48-bit Neuron ID
Communications Rate: 78 kbps
Termination: None provided
Maximum Lead Length: 1640 ft (500m) free topology

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1.4 NETWORK SIGNAL CONNECTIONS

!

!

1.4.1 Lon Talk

Lon Talk, 2-wire serial output connections are connected to terminal T1 as shown. Do not

exceed 4.4 in-lb (0.5 Nm) of torque when tightening.

CAUTION

Only qualied service personnel should make connections between the System-10 BTU Meter
and the user’s external equipment. ONICON assumes no responsibility for damage caused to
the external equipment as a result of an improper installation.

Incoming and outgoing cable shield wires should be connected together, but must not be
connected to the System-10.

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T1

CAUTION

1.4.2 Optional Network Interface With Isolated Digital Pulse Input (Di3)

The System-10 BTU Meter can be provided with an auxiliary pulse input for totalizing
pulse outputs from external devices such as water or gas meters. Pulses are accumulated
in an internal register, and the totalized value is available on the network. This register
can be zeroed via the network. The maximum register total is 9,999,999. The register will
rollover to zero when this value is exceeded.

If the auxiliary pulse input option was ordered at the same time the Btu meter was
ordered, it will arrive fully congured and ready to use. If it was ordered after the Btu
meter was delivered and is being installed as a eld upgrade, it may be necessary to
congure the pulse input. The information is required to congure the input provided
below and on the following pages:

The input pulse must meet the following criteria:

1. Frequency input range, 50 Hz maximum

2. 10 millisecond minimum pulse duration

Input Pulse Denition:

In order to congure the communications card auxiliary pulse input, you must rst
determine which type of pulse your meter produces. The allowable types of input
pulses are described on the following pages. Based on the type of pulse, set the selector
switch (S1) on the communications circuit board (Fig. 1) to the correct setting.

Fig. 1

AUX PULSE INPUT (Di3)
CONNECTOR (T2)

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