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Tracer AVi
User Manual
22 pgs1.49 Mb0
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Rice Lake Tracer AVi User Manual

Tracer AVi
Aviation Baggage Instrumentation
Installation Manual
93633
Contents
2.1 Unpacking and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 Mounting the iQube and Remote Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.3 Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.4 Load Cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.5 Serial Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.6 Core Module DIP Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.7 Core Module Reset Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.8 The Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.9 Fuse Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.10 Interface Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.11 Replacement Parts and Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1 Introduction to VIRTUi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1.1 Authentication/Authorization System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1.2 Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1.3 Function Keys and Annunciators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1.4 VIRTUi Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1.5 Web Browser-Based Cell Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1.6 System Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 VIRTUI Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2.1 Downloading to the Tr a c e r A V i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1 Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2 Diagnostic Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.ricelake.com or obtained by
calling 715-234-9171 and asking for the training department.
© 2007 Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America.
Specifications subject to change without notice.
November 2007

About This Manual

This manual is intended for use by service technicians responsible for installing and servicing the
Tracer AVi
single channel diagnostic junction box and bagwell display.
Authorized distributors and their employees can view or download this manual from the Rice Lake Weighing Systems distributor
www.ricelake.com.
site at

1.0 Introduction

The Tracer AVi system consists of three components:
• iQubeTM, a digital programmable junction box used with an analog load cell. It outputs a serial string that can be directly input to the remote display and
• RD-1 remote display, a .8”, six-digit, seven-segment LED display.
• VIRTUiTM, a PC-based indicator for iQube. The virtual front panel consists of display and five-button keypad.
The iQube consists of three boards:
•The connector board provides the physical connections for the load cell, serial communications, and power.
•The core module, which plugs into the connector board, contains the processor and stores configuration and calibration data for the module provides a discrete A/D input and converts the analog load cell signal to a digital serial output.
•The 7.5 VDC power supply mounts inside the enclosure and requires a 115/230 VAC input.
Configuration
The Tra cer AVi system can be configured by using a PC running the
VIRTUi configuration program. This
method defines the load cell connected to which is associated with a platform, and the platform that makes up the scale. Even though the single-channel
iQube is just one cell, one platform,
and one scale; the association of scale and platform is required because the software is also used on multiple cell and multiple platform scales.
Configuration consists of the following steps: Define Load Cell: This is the electrical sensitivity
(mV/V output) and capacity specification of the load cell. Load cell name and serial number can also be specified.
VIRTUi.
Tracer AVi’s
Tracer AVi. The core
iQube,
Some procedures described in this manual require work inside the iQube enclosure. These procedures are to be performed by
qualified service personnel only.
The Tracer AVi does not have an on/off switch and therefore must be installed near a power outlet that is easily accessible and in accordance with UL/CSA Safety Standards.
Define Platforms: The iQube board must assign a load cell to the platform.
Define System: The iQube board must assign the platform to the system.
Load Cell Trimming and Calibration
iQube supports calibration of multiple load cells with
corner match and section match calibration. For the single cell iQube, only multi-point linear
calibration and theoretical calibration apply. Each type of calibration captures the initial dead load of the scale and provides a means to trim the output of the load cell.
Based on the cell capacity and sensitivity, the theoretical calibration calculates weight values based on the total signal from the cell.
Single Cell Diagnostic
Diagnostic functionality can be enabled for the iQube to identify abnormal load cell output. The diagnostic conditions that can be identified are open bridge open channel, drifting, peak-to-peak noise, cell at rail, and cell over/under range.
Error conditions generate a displayed error message if connected to
VIRTUi which can be configured to
email the alert message to an address.
Introduction 1

2.0 Installation

This section describes procedures for connecting load cell, power, and serial communications cables to the
TM
iQube
enclosure. Drawings and replac ement parts
lists are included for the service technician.
Use a wrist strap to ground yourself and
!
protect components from electrostatic discharge (ESD) when working inside the
iQube enclosure.
Disconnect AC power from the main module before installing remote displays.

2.1 Unpacking and Assembly

Immediately after unpacking, visually inspect the contents to ensure all components are included and undamaged. The shipping carton should contain the
iQube, the remote display, this manual, and
connection cables. If any parts were damaged in shipment, notify Rice Lake Weighing Systems and the shipper immediately.
See Table 2-4 on page 4 for the iQube cables.

2.2 Mounting the iQube and Remote Display

The iQube and remote display are two separate components. The main board is installed in the
iQube.
All components can be installed in separate locations. The iQube can be placed either upright or on its side.
Mounting hardware is not included in the parts kit.

2.3 Cable Connections

The single channel iQube provides one load cell connector, two remote display connectors, one host (PC) com port connector for connecting to the PC running
VIRTUi, and an AC power cord.

2.4 Load Cells

The load cell wired to connector J3 in the iQube, is assigned a default name A1. J3 is wired to a DB-9 on the enclosure panel.
.
DC IN
1
HOST SERIAL
1
REMOTE
1
REMOTE
1
J7
J5
C2
C3
C5
GNDTxDDC+TxD
DC+GND
RxD
TxDGND
J4
J6
G2E
R1
F1
J2
R2
D1
C4
C1
U1
C6
TVS5
TVS6
J1
RICE LAKE
Assembly P/N
TVS4
TVS3
TVS2
TVS1
Rev.
1
+SIG
–SIG +EXC
–EXC
SHLD
J3
Figure 2-1. iQube Connector Board with Core Module
2 Trac er AVi Installation Manual
Load Cell Wiring
To attach the load cell cable to the connector board, plug the cable into external connector (see
Figure 2-6
on page 6). Wire load cell cables as shown in Table 2-1.
Given that these and other factors will affect the maximum usable cable length, the following distances can be used as a general guide for
iQube
communications cabling (10 ft cable is provided):
RS-232: 50 ft (15 m)
On-Board
DB-9 Pin
Female Connector
7 1 +SIG
3 2 –SIG
4 3 +EXC
6 4 –EXC
5 5 SHIELD
Table 2-1. Load Cell Connector Pin Assignments
Connector
(J3) Function

2.5 Serial Communications

The J4, J6 and J7 serial communications ports on the
iQube connector board support communications
between the remote display.)
• Port J4 supports full-duplex RS-232
To attach serial communications cables, plug cable into the external DB-9 connectors labeled Remote Display.
Table 2-2 shows the pin assignments for connectors J4, J6, and J7.
Connector DB-9 Pin Pin Signal
J4
(Host Com)
J6
(Remote)
J7
(Remote)
iQube and a host device (PC and/or
communications between the
iQube unit and a
host device. Port J6 and J7 are used to connect to the
remote display(s).
Male 2 1 TxD
Male 3 2 RxD
Male 5 3 Gnd
Female 1 1 DC+
Female 2 2 GnD
Female 9 3 TxD
Female 1 1 DC+
Female 2 2 GnD
Female 9 3 TxD

2.6 Core Module DIP Switches

The DIP switches on the iQube core module must be set to configure the
iQube as a primary or secondary
unit, and to specify the type of serial communications provided by the unit.
Table 2-3 lists the DIP switches
and their functions.
Switch Function Values
1–3 Primary OFF, OFF, OFF = PRIMARY
4 Setup enable ON = setup enabled
5 Host
communication protocol
6 Host
communication port
7 Reserved OFF
8 Load default OFF
Table 2-3. Core Module DIP Switch Settings
OFF = RS-232
OFF = Port J7

2.7 Core Module Reset Procedure

If VIRTUi does not recognize the connection to the load cell, the core module may need to be reset to initialize the
To reload the default firmware into the iQube core module, do the following:
1. Power-off the iQube. Remotely powered units
2. Set core module DIP switch 8 ON.
3. Power-on the iQube.
4. Power-off the iQube.
5. Set DIP switch 8 OFF.
6. Power-on the iQube. The reset is now complete.
iQube firmware.
can be powered off by temporarily removing fuse F1 (see
Figure 2-1 on page 2).
Table 2-2. Serial Port Pin Assignments
Communications Cable Distance Limitations
The maximum cable lengths that can be used for various communications types depend on a number of factors. These include: output impedance of the transmitter; electrical noise in the environment; cable capacitance, gauge, termination, and shielding.
Installation 3
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