Rice Lake iQube 920i, Installation Manual

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Introduction 1
About This Manual
This manual is intended for use by service technicians
responsible for installing and servicing
920i
™
digital
diagnostic junction boxes. This manual applies to
Version 2145 or later of the
iQUBE software and
Version 2.05 or later of the 920i indicator software.
Configuration and calibration of the iQUBE can be
accomplished using the Revolution III configuration
utility.
For installations using the 920i indicator, the indicator
can be configured using the Revolution III or iRev
™
configuration utilities, serial commands, or the 920i
indicator front panel keys.
S ome procedures described in this manual
require work inside the
iQUBE
or indicator
enclosure. These procedures are to be
performed by qualified service personnel
only.
Authorized distributors and their employees
can view or download this manual from the
Rice Lake Weighing Systems distributor
site at
www.rlws.com .
1.0 Introduction
The iQUBE is a digital programmable junction box
used to connect up to 16 full bridge analog load cells.
The
iQUBE outputs a serial stream that can be directly
input to the 920i indicator using copper, fiber-optic, or
Ethernet cabling. Alternatively, the iQUBE can be
configured to provide an analog output signal for
input to standard digital weight indicators.
The iQUBE is available in three models:
• Four-channel
• Eight-channel
• Eight-channel with eight digital I/O channels
The basic iQUBE consists of two boards:
• The connector board provides the physical
c o n n e c t i o n s f o r t h e l o a d c e l l s , s e r i a l
communications, analog output, and digital
I/O.
• The core module , which plugs into the
connector board, contains the iQUBE ’s
processor and stores configuration and
calibration data for the
iQUBE . The core
module provides a discrete A/D for each
channel input and converts the analog load
cell signal to a digital serial output.
Up to four iQUBE units can connect and communicate
as a multidrop RS-485 network, consisting of one
primary and up to three secondary
iQUBE units. The
maximum number of load cells supported for the 920i
indicator is 16. Up to four individual weighing
platforms can be configured for a scale system.
The iQUBE can be configured and calibrated through
the 920i indicator (Version 2.05 or later), the 920i ’s
iRev configuration utility, or by using the iQUBE
module of the Revolution III configuration utility.
iQUBE Options
Options for the iQUBE include the following;
Internal power supply:
The 6 VDC power supply
mounts inside the iQUBE enclosure and requires a
115/230 VAC input. This option is required for
applications that do not use the
920i indicator and for
920i applications that use more than two iQUBE units,
the distance between the 920i and the master iQUBE is
more than 75 feet, or the fiber optic modules are used.
Analog output: This option consists of a DAC card
that mounts on the core module and converts the
iQUBE ’s digital output stream to 0–30 mV or 0–20
mA (passive only).
Fiber-optic transceiver: This option mounts on the
connector board to convert the iQUBE ’s serial output
into visible light for fiber-optic interface. When used
with the optional power supply, the fiber-optic
interface provides electrical isolation of the
iQUBE
from the host.
Fiber-optic transceiver to analog output: This
option converts digital fiber-optic data received from
the
iQUBE to an analog signal that can be input to the
load cell input of a standard weight indicator.
Ethernet: This option mounts on the connector board
to transfer the iQUBE ’s serial output onto the Ethernet.
Configuration
There are two methods for configuration, using either
t h e
9 2 0 i i n d i c a t o r a s t h e h o s t ( m e n u o r i R e v
configuration) or by using the Revolution III utility to
configure the iQUBE directly. Each method defines
the load cells connected to iQUBE , which load cells
comprise a platform, and which platforms make up
the scale system.