Rice Lake IQ plus 2100 User manual

PRESENTED BY
JPBOWLIN.COM
817.332.8116
J.P. Bowlin is a quality-driven Calibration Company
that has provided calibration, repair and sales
of all types of weighing and measurement products since 1931.

IQ plus®2100
Digital Bench Scale
Version 1
Installation Manual
PN 53415 Rev A

Contents i
Contents
1.0 Introduction..................................................................................................................................... 1
1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Operating Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.3 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4 LED Annunciators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.5 Indicator Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.0 Installation ...................................................................................................................................... 3
2.1 Unpacking and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Factory Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.3 Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3.1 Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3.2 Load Cells. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3.3 Setting the Load Cell Compensation Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3.4 Serial Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3.5 Digital Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3.6 Enclosure Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3.7 Board Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Bench Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4.1 6.6.1 Load Cell Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4.2 Bench Scale Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5 IQ Plus 210 Indicator Repair Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.6 RL2100 Replacement Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.0 Configuration ................................................................................................................................ 17
3.1 Configuration Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.1.1 Revolution Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.1.2 EDP Command Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.1.3 Front Panel Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2 Menu Structures and Parameter Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2.1 Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2.2 Format Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.2.3 Calibration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.2.4 Serial Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.2.5 Digital Input Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.2.6 Default Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.2.7 Version Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.0 Calibration .................................................................................................................................... 27
4.1 Front Panel Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.2 EDP Command Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.3 Revolution™Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.0 EDP Commands............................................................................................................................. 30
5.1 The EDP Command Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1.1 Key Press Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1.2 Reporting Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1.3 The RESETCONFIGURATION Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1.4 Parameter Setting Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1.5 Normal Mode Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.2 Saving and Transferring Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
© Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America.
Specifications subject to change without notice.
Rice Lake Weighing Systems is an ISO 9001 registered company.
Version 1 January 05, 2016
Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.ricelake.com/training
or obtained by calling 715-234-9171 and asking for the training department.

ii IQ plus 2100 Installation Manual
5.2.1 Saving Indicator Data to a Personal Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.2.2 Downloading Configuration Data from PC to Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.0 Appendix ....................................................................................................................................... 33
6.1 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.1.1 Displayed Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.1.2 6.1.2 Using the XE EDP Command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.2 Status Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.2.1 6.2.1 Using the P EDP Command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.2.2 6.2.2 Using the ZZ EDP Command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.3 Continuous Output (Stream) Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Rice Lake continually offers web-based video training on a growing selection
of product-related topics at no cost. Visit www.ricelake.com/webinars

Introduction 1
1.0 Introduction
This manual is intended for use by service technicians responsible for installing and servicing the IQ plus

2100
digital bench scale.
Configuration and calibration of the indicator can be accomplished using the indicator front panel keys, the EDP
command set, or Version 2.3 or later of the Revolution™configuration utility. See Section 3.1 on page 17 for
information about configuration methods.
Some procedures described in this manual require work inside the indicator enclosure. These procedures
are to be performed by qualified service personnel only.
This manual can be viewed or downloaded from the Rice Lake Weighing Systemswebsite at
www.ricelake.com/manuals
Warranty information can be found on the website at www.ricelake.com/warranties
1.1 O ve rv i ew
The IQ plus 2100 digital bench scale consists of an IQ plus 210 digital weight indicator and an RL2100 bench
scale. The indicator can be mounted to the bench scale using the 12”column or the attachment bracket, or can be
separately mounted on the tilt stand.
The IQ plus 210 is a single-channel digital weight indicator housed in a NEMA 4X/IP66-rated stainless steel
enclosure. The indicator front panel consists of a large (.8 in, 20 mm), six-digit, seven-segment LED display, seven
LED annunciators, and two piezo switches used to zero the scale and select the displayed units. Features include:
•Drives up to four 350load cells
•Supports 4- and 6-wire load cell connections
•Two configurable digital inputs
•Single serial port supports full duplex, RS-232 communications at up to 9600 bps
•Available in 115 VAC and 230 VAC versions
The RL2100 bench scale is available in the following configurations:
•5, 10, and 25 lb (2.5, 5, and 10 kg) capacities with a 10”x 10”(25 cm x 25 cm) platform
•50 and 100 lb (25 and 50 kg) capacities with a 12”x 12”(30 cm x 30 cm) platform
A single point anodized aluminum load cell is standard in the RL2100 bench scale. A stainless steel clamshell
enclosure is also available for load cell protection.
1.2 Operating Modes
The IQ plus 210 has two modes of operation:
Weigh mode
Weigh mode is the production mode of the indicator. The indicator displays the gross weight, and the LED
annunciators described on page 2 indicate scale status and the type of weight value displayed. Once
configuration is complete and a legal seal is affixed to the back of the indicator, this is the only mode in which
the IQ plus 210 can operate.
Setup mode
Most of the procedures described in this manual require the indicator to be in setup mode, including
configuration and calibration.
To enter setup mode, remove the large fillister head screw from the enclosure backplate. Insert a screwdriver or
a similar tool into the access hole and press the setup switch once. The indicator display changes to show the
word CONFIG.
WARNING

2IQ plus 2100 Installation Manual
1.3 Front Panel
Figure 1-1 shows the IQ plus 210 LED annunciators, buttons, and normal mode key functions.
Figure 1-1. IQ plus 210 Front Panel
1.4 LED Annunciators
The IQ plus 210 display uses a set of seven LED annunciators to provide additional information about the value
being displayed:
•Neg annunciator lights to show that the displayed value is negative.
•Zero: Weight is within 0.25 graduations of zero. This annunciator lights when the scale is zeroed.
•Motion: Scale in motion outside the specified motion band. Zeroing and print operations can only be done
when the motion LED is off.
•lb, kg, oz, and gannunciators indicate the units associated with the displayed value: lb = pounds,
kg = kilograms, oz = ounces, g = grams. lb and oz annunciators are both lit when the displayed weight is in
pounds and ounces.
1.5 Indicator Operations
Basic IQ plus 210 operations are summarized below.
Zero Scale
1. Remove material from the scale and wait for the Motion LED to go out.
2. Press the ZERO button. The zero annunciator lights to indicate the scale is zeroed.
Change Display Units
Press the UNITS button to change the displayed units between primary and alternate units. The LED annunciators
on the right side of the display show the current displayed units. If more than one alternate unit is configured, the
display cycles through the alternate units before returning to primary units; if no alternate units are configured, the
display does not change when the button is pressed.
DIGITAL WEIGHT INDICATOR
ZERO/ENTER
Move down in menu or
enter parameter value and
return to menu level above
UNITS/RIGHT
Move right in menu /
next parameter value
kg
g
lb
oz
ZERO UNITS
Zero
Motion
Neg

Installation 3
2.0 Installation
The IQ plus 2100 digital bench scale is designed for easy setup and installation.All models are pre-configured and
weight calibrated before shipment, with the load cell connected to the indicator. For simple, standalone scale
applications, hardware installation consists of attaching the indicator, mounting assembly, and bench scale, then leveling
the scale.
The IQ plus 2100 is weight calibrated before shipment from the factory, but recalibration at the installation site
is strongly recommended. Calibration by a certified scale technician is required for Legal-for-Trade
applications.
2.1 Unpacking and Assembly
Immediately after unpacking, visually inspect the IQ plus 2100 to ensure all components are included and
undamaged. The shipping carton should contain the indicator, the bench scale, the indicator mount (tilt stand,
column, or attachment bracket), this manual, and a parts kit. If any parts were damaged in shipment, notify Rice
Lake Weighing Systems and the shipper immediately.
The parts kit contains the items listed below:
•Capacity label (PN 42350)
•One grounding clamp (PN 53075), external tooth lock washer, (PN 15133), and kep nut (PN 14626) for
digital input or serial cable shield grounding against the enclosure.
•Two wing knobs with nylon washers for attaching the indicator to the mounting assembly, four rubber tilt
stand feet (for tilt stand option) or bench scale feet, jam nuts, lock washers, and cap screws (for column and
attachment bracket options).
To install, attach the mounting assembly to scale base, then assemble the indicator to the mounting assembly. Place
the bench scale in the desired location then lift off the scale platter and locate the bubble level. Adjust the corner
feet until the scale is level and all feet are in contact with the support surface. Tighten the jam nuts against the scale
to lock-in the level adjustment.
Plug power cord into power outlet to begin weighing.
The supply cord serves as the power disconnect for the IQ plus 2100. The power outlet supplying the
indicator must be installed near the unit and be easily accessible.
2.2 Factory Setup
The IQ plus 2100 is pre-configured and weight calibrated at the factory before shipment. Table 2-1 lists the default
graduations and count-by configuration for each scale capacity.
Scale Capacity Count by
Configuration Parameters
DECPNT DSPDIV
5 lb 0.001 lb 888.888 1D
10 lb 0.002 lb 888.888 2D
25 lb 0.005 lb 888.888 5D
50 lb 0.01 lb 8888.88 1D
100 lb 0.02 lb 8888.88 2D
2.5 Kg 0.0005 Kg 88.8888 5D
5 Kg 0.001 Kg 888.888 1D
10 Kg 0.002 Kg 888.888 2D
25 Kg 0.005 Kg 888.888 5D
50 Kg 0.01 Kg 8888.88 1D
All capacities are pre-configured for 5000 graduations
(GRADS parameter on CONFIG menu set to 5000).
Table 2-1. Default Scale Configurations
Note
WARNING
Note

4IQ plus 2100 Installation Manual
If scale configuration must be changed, see Section 3.0 on page 17 for detailed configuration information. See
Section 4.0 on page 27 for calibration instructions.
2.3 Indicator
The indicator enclosure must be opened to connect cables for load cells, communications and digital inputs.
The IQ plus 210 has no on/off switch. Before opening the unit, ensure the power cord is disconnected
from the power outlet.
• Use a wrist strap to ground yourself and protect components from electrostatic discharge (ESD) when working inside
the indicator enclosure.
• This unit uses double pole/neutral fusing which could create an electric shock hazard. Procedures requiring work inside
the indicator must be performed by qualified service personnel only.
• The supply cord serves as the power disconnect for the IQ plus 210. The power outlet supplying the indicator must be
installed near the unit and be easily accessible.
Ensure power to the indicator is disconnected, then remove the screws that hold the backplate to the enclosure
body, then lift the backplate away from the enclosure and set it aside.
2.3.1 Cable Connections
The IQ plus 210 provides three cord grips for cabling into the indicator: two for the power cord and load cell
cabling, the third for communications and digital input cables. The free cord grip comes with a plug installed to
prevent moisture from entering the enclosure. If your application requires serial communication or digital input
cabling, remove the plug and install cables as described in Sections 2.3.4 and 2.3.5 on page 6.
Cable Grounding
Except for the power cord, all cables routed through the cord grips should be grounded against the indicator
enclosure. Do the following to ground shielded cables:
• Use the lock washers, clamps, and kep nuts provided in the parts kit to install grounding clamps on the
studs adjacent to the cord grips. Install grounding clamps only for cord grips that will be used; do not
tighten nuts.
• Route cables through cord grips and grounding clamps to determine cable lengths required to reach cable
connectors. Mark cables to remove insulation and shield as described below:
• For cables with foil shielding, strip insulation and
foil from the cable 0.5" (15 mm) past the grounding
clamp (see Figure •). Fold the foil shield back on the
cable where the cable passes through the clamp.
Ensure silver (conductive) side of foil is turned
outward for contact with the grounding clamp.
• For cables with braided shielding, strip cable
insulation and braided shield from a point just past
the grounding clamp. Strip another 0.5" (15 mm) of
insulation only to expose the braid where the cable
passes through the clamp (see Figure •).
• For load cell cables, strip the yellow shield wire
0.75" past the grounding clamp. Fold wire back and
secure between the cable and clamp. Shield wire
function is provided by contact between the cable shield and the grounding clamp.
• Route stripped cables through cord grips and clamps. Ensure shields contact grounding clamps as shown in
Figure •. Tighten grounding clamp nuts.
• Finish installation using cable mounts and ties to secure cables inside of indicator enclosure.
WARNING
CAUTION
Cord grip
Insulated cable
Foil (silver side out) Grounding clamp
Shield wire (cut)
Length of foil before folding
back on cable insulation
Cut insulation here
for foil-shielded cables
Braid
Cut insulation here
for braided cables
NOTE: Install lockwashers
rst, against enclosure,
under grounding clamp
Figure 2-1. Grounding Clamp Attachment for Foil-
Shielded and Braided Cabling

Installation 5
Figure 2-2. IQ plus 210 CPU and Power Supply Board
2.3.2 Load Cells
Wire the load cell cable from the load cell or junction box to connector J5 as shown in Table 2-2. If using 6-wire
load cell cable (with sense wires), remove jumpers JP1 and JP2 (see Figure 2-2). For 4-wire installation, leave
jumpers JP1 and JP2 on.
All models come with ten feet of color-coded load cell cable. Do not cut this cable. The load cell is
temperature-compensated for an exact cable length often feet. Cutting the load cell cable voids the load cell
warranty.
When connections are complete, use two cable ties to secure the load cell cable to the inside of the enclosure.
Use grounding procedure described in Section on page 4 to attach shield wire to backplate.
For 6-wire connections, remove jumpers JP1 and JP2.
2.3.3 Setting the Load Cell Compensation Jumper
The load cell compensation jumper (above the ZERO button location on the CPU board; see Figure 2-2) must be set
for the type of load cell connected to the indicator:
• For load cells with balanced bridges, set the jumper in the OFF position. Example of balanced load cells
include the RL1040, RL1250, RL1260, RL1380, and RL1385.
• For load cells with unbalanced bridges, follow the procedure below to determine the correct jumper position.
Examples of unbalanced cells include the RL1042 and RL1010.
J5 Pin Function
RL1040
RL1042 RL1380
1+SIG Red White
2–SIG White Red
3+SENSE Blue --
4–SENSE Brown --
5 +EXC Green Green
6 –EXC Black Black
Table 2-2. J5 Pin Assignments and Load Cell Wire Color
F1 F2
Blue wire
J8
Brown wire
J1
To setup switch
J7
1
2
3
SERIAL COMM
TxD
GND
RxD
VR3
LOAD CELL CONNECTOR
1234567
–SIG
+SENSE
–SENSE
SHIELD
+EXC
–EXC
+SIG
J5
J2 J3
11
GND
DIGIN 2 DIGIN 1
J6
J4
GND
BR1
–+
VR1 VR2
JP1
JP2
RESET
ANALOG
+5V
TEST
DIGITAL
+5V
TEST TP1
TP2
A/D Converter
Microprocessor
Transformer
UNITS
Button
ZERO
Button
Power
Input
Note
Note

6IQ plus 2100 Installation Manual
To determine the correct jumper position for unbalanced cells, do the following;
1. Disconnect load cell from indicator.
2. Use an ohmmeter to measure +EXC to +SIG and +EXC to –SIG. Measured values between the excitation line
and each of the signal lines should be within 2–3.
3. Next, measure –EXC to +SIG and –EXC to –SIG. Measured values between the excitation line and each of
the signal lines should be within 2–3.
4. If the +EXC measurements (step 2) are Š 5% larger than the –EXC measurements (step 3), set the
compensation jumper in the ON position. If the +EXC measurements are < 5% greater (or are less) than the –
EXC measurements, set the jumper in the OFF position.
2.3.4 Serial Communications
To attach serial communications cables, connect communications cables to connector J7 as shown in Table 2-3. Use
cable ties to secure serial cable to the inside of the enclosure.
Use the SERIAL menu to configure serial communications. See Section 3.2.4 on page 24 for configuration
information.
2.3.5 Digital Inputs
Digital inputs (connectors J2 and J3) can be used to perform remote ZERO and UNITS key presses or to send serial
data to a printer (remote PRINT key function). The inputs are active (on) with low voltage (0 VDC) and can be
driven by TTL or 5V logic without additional hardware. Use the DIG IN menu to configure the digital inputs. See
Section 3.2.5 on page 25 for information about configuring the digital inputs.
2.3.6 Enclosure Reassembly
Once cabling is complete, position the backplate over the enclosure and reinstall the backplate screws. Use the
torque pattern shown in Figure 2-3 to prevent distorting the backplate gasket. Torque screws to 15 in-lb (1.7 N-m).
Figure 2-3. IQ plus 210 Enclosure Backplate
2.3.7 Board Removal
If you must remove the IQ plus 210 CPU board, use the following procedure:
1. Disconnect power to the indicator. Remove backplate as described in Section 2.3 on page 4.
2. Remove connections to J5 (load cell cable), J7 (serial communications), J2 and J3 (digital inputs), J4 and
J6 (piezo button inputs), and J1 (setup switch). Remove blue and brown power input wires at J8. See
Figure 2-2 on page 5 for connector locations.
J7 Pin Label Function
1TxDRS-232TxD
2GNDRS-232Ground
3 RxD RS-232 RxD
Table 2-3. J7 Pin Assignments
Setup switch access screw
Fillister head screws
10
9
8
7
4
3
1
2
56
Torque backplate screws to 15 in-lb (1.7 N-m)
Torque pattern

Installation 7
3. Remove the five nuts from the CPU board, then lift the board out of the enclosure.
To replace the CPU board, reverse the above procedure. Be sure to reinstall cable ties to secure all cables inside the
indicator enclosure.
2.4 Bench Scale
This section provides instructions for replacing load cell, adjusting lift-up and overload protection screws and
installing the optional clamshell enclosure.
2.4.1 6.6.1 Load Cell Replacement
Use the following procedure to replace the load cell in RL2100 bench scales:
1. Disconnect power to the indicator.
Before opening the indicator enclosure, ensure power to the indicator is disconnected.
2. Disconnect the load cell cable at the indicator.
3. Lift off scale platter. Remove lift-up protection screws from spider plate and base assembly.
4. Use 7/16" wrench to remove upper load cell screws and lock washers. Remove spider plate and upper load
cell shim from load cell.
5. Turn scale over and unscrew overload protection set screw one full turn.
6. Use 7/16" wrench to remove lower load cell screws and lock washers. Remove the lower load cell shim,
load cell and cable.
7. Thread replacement load cell cable through rubber grommet.
8. Position load cell on lower shim. Install lower load cell lock washers and screws. Torque to 80 in-lb (9.0
N-m).
9. Set scale on its feet. Position upper shim on load cell, then install spider plate and lift-up protection screws.
10. Install upper load cell lock washers and screws. Torque to 80 in-lb (9.0 N-m).
11. Replace scale platter. Ensure that scale is level.
12. Connect load cell cable to indicator (see Table 2-2 on page 5).
13. Readjust lift-up protection screws and overload protection set screw as described under Section 6.6.2 on
page 27.
14. Power-up indicator and recalibrate scale.
Figure 2-4. RL2100 Components – Side View
WARNING
Lift-up Protection Screws
Upper Load Cell Screws
Upper Shim
Platter
Spider Plate
Corner Overload
Protection Screw
(one in each corner)
Lower Shim
Lower Load Cell Screws
Overload Protection
Set Screw

8IQ plus 2100 Installation Manual
2.4.2 Bench Scale Adjustments
The RL2100 bench scale uses a number of screws to provide overload and underload protection for the load cell.
These protection screws are all set at the factory before shipment; use the following information to verify and reset
protection screws.
Figure 2-5. RL2100 Protection Screw Adjustments
Lift-up Protection Screws
Set lift-up protection screw height to 0.06" (1.52 mm).
Overload Protection Set Screw
Elevate the scale base to allow sufficient clearance to adjust the set screw, then center a load equal to 125% of scale
capacity on the platter. Use a hex wrench to advance the set screw until it touches the load cell, then back off 1/6 of
a turn. Verify calibration, then add a drop of non-permanent thread adhesive (such as LOCTITE®) to prevent the set
screw from vibrating loose.
Corner Overload Protection Screws
The correct height of the corner overload protection screws depends on the scale capacity. Adjust the four screws to
the heights shown in Table 6-4.
Model Capacity
Corner Overload Protection
Screw Height (D)
5 lb (2.5 Kg) 0.56 in (142 mm)
10 lb (5 Kg) 0.50 in (127 mm)
25 lb (10 Kg)
50 lb (25 Kg)
100 lb (50 Kg)
Table 2-4. Corner Protection Screw Height
0.06 in
D
Corner overload
protection screws (4)
Lift-up protection screws (2)
Overload protection
set screw

Installation 9
6.6.3 Clamshell Installation
Protective stainless steel clamshells are available as an option for all RL2100 bench scales. Clamshells are
pre-drilled for load cell screws, overload screw, and cables. Existing load cell shims are reinstalled inside
the clamshells.
To install the clamshell, do the following:
1. Remove platter, spider plate, and load cell using the procedure described in Section 2.4.1 on page 7.
2. Install lower clamshell in base. Route load cell cable through lower clamshell and grommet., then reinstall
lower shim and load cell so that no part of the load cell touches the clamshell enclosure. Replace lower
load cell screws and lock washers. Torque to 80 in-lb (9.0 N-m).
3. Install upper clamshell, ensuring clearance on all sides to prevent binding against the lower clamshell.
Reinstall upper shim, spider plate, lock washers, and upper load cell screws. Torque screws to 80 in-lb (9.0
N-m).
4. Replace scale platter. Ensure that scale is level.
5. Readjust lift-up protection screws and overload protection set screw on bottom of scale base as described
under Section 2.4.2 on page 8.
6. Connect load cell cable to indicator. Power-up indicator and recalibrate scale.
Figure 2-6. Clamshell Installation
Upper Clamshell
Lower Clamshell
Spider Plate
Platter
Load Cell

10 IQ plus 2100 Installation Manual
2.5 IQ Plus 210 Indicator Repair Parts
Figure 2-7. IQ Plus 210 Indicator Parts Illustration
34
22
To J6
To J4
23
7
6
5
8
12
14
2
33
37
3
36
Brown Wire
Blue Wire
From Line
Filter
19
1
20
Detail B
Ground Post Assembly
16
Back Panel
35
4
To CPU J1
15
27
24 10
11
9
26
From Inside Bottom Panel
See Detail A
Detail A
Inside Bottom Plate
31
30
28
13
29
Ground Wire
From Back Plate
To Display Board
Input Power J8
See Detail B
From Back Plate
Ground Post
From Line Filter
From Power
Cord
From Setup
Switch

Installation 11
For protection against risk of fire, replace fuses only with same type and rating fuse.
Item
No. Part No. Description Qty
1 14626 Kep nuts, 8-32NC hex 3
2 53651 Display and CPU board assembly, 115 VAC 1
53650 Display and CPU board assembly, 230 VAC 1
3 15365 Board mounting spacers 5
4 52483 Enclosure backplate 1
5 15626 Cable grips, PG9 2
6 30375 Nylon seal rings for cable grips 3
7 15627 Locknuts, PCN9 3
8 19538 Cable grip plugs 2
9 45042 Sealing washers 1/4
10 44676 Sealing washer for setup switch access screw 1
11 42640 Setup switch access screw, 1/4 x 28NF x 1/4 1
12 41965 Power cord assembly, 115VAC 1
45254 Power cord assembly, 230VAC 1
13 41964 Line filter assembly 1
14 14621 Kep nuts, 6-32NC hex 5
20 15134 Lock washers, internal tooth, No. 8 , Type A 4
22 52853 Overlay membrane panel 1
23 52482 Enclosure 1
24 14862 Screws, 8-32NC x 3/8 8/4
26 45043 Ground wire, 4-in., No. 8 1
27 39037 Backplate gasket 1
28 49910 Setup switch assembly 1
29 16892 Ground/Earth Label 1
30 15650 Cable tie mounts 1
31 45302 Line filter standoffs 2
33 15131 Lock washers, external tooth, No. 6, Type A 10
34 61113 Piezo switches 2
35 30623 Fillister head screws, 8-32NC x 7/16 2
— 53848 200 mA TR5 subminiature fuses, 115 VAC 2
53881 100 mA TR5 subminiature fuses, 230 VAC 2
Table 2-5. IQ Plus 210 Repair Parts List
WARNING

12 IQ plus 2100 Installation Manual
2.6 RL2100 Replacement Parts
Figure 2-8. RL2100 Repair Parts Illustration
1
2
4
5
9
6
3
7
8
17
19
10
11
12
13
14
15
18
16

Installation 13
Item
No. Part Number Description Qty
1 51332 Platter, 10x10 1
51333 Platter, 12x12 1
2 50880 Spider plate, 10x10 1
51335 Spider plate, 12x12 1
3 50881 Base, 10x10, 5-Lb model 1
63233 Base, 10x10, 10- & 25-Lb models 1
63430 Base, 12x12 1
4 — Single Point Load cell --
5 35082 Upper load cell shim, 10x10 models 1
52383 Upper load cell shim, 12x12 models 1
6 15410 Bubble level 1
7 21948 Cap screws, 1/4-20NC x 5/8 2
8 15148 Lock washers, 1/4 4
9 52341 Overload protection cap screws, 10/32NF x 3/4 4
10 39025 Nuts, 10-32NF hex, 18-8 6
11 15408 Rubber grommet, 3/16 ID 1
12 15409 Cable clamp, No. 8 1
13 14862 Machine screw, 8-32NC x 3/8 1
14 14645 Jam nuts, 1/4-20NC hex SST 4
15 35128 Scale feet, 1/4-20NC x 1 3/16 4
16 43203 Overload protection set screw, 8-32NC x 1/2 1
17 63170 Lift-up protection machine screws, 10-32NF x 1 1/4 2
18 14963 Cap screws, 1/4-20NC x 3/4 2
19 52383 Lower load cell shim 1
Table 2-6. RL2100 Replacement Parts List

14 IQ plus 2100 Installation Manual
Figure 2-9. IQ Plus 210 Tilt Stand Assembly
Item No. Part No. Description Qty
1 29635 Tilt stand 1
2 42149 Tilt stand feet 4
3 15144 Nylon washers, 1/4x1x1/16 2
4 30342 Wing knobs 2
Table 2-7. IQ Plus 210 Tilt Stand Assembly Parts List
2
3
4
1

Installation 15
Figure 2-10. Attachment Bracket Assembly Parts Illustration
Item
No. Part No. Description Qty
1 50879 Attachment bracket 1
2 15408 Rubber grommet, 3/16 ID 1
3 14956 Cap screws, 1/4-20NC x 1/2 2
4 15148 Lock washers, 1/4 2
5 14645 Jam nuts, 1/4-20NC hex SST 2
6 35128 Bench scale feet, 1/4-20NC 2
7 30342 Wing knobs 2
8 15144 Nylon washers, 1/4x1x1/16 2
Table 2-8. Attachment Bracket Assembly Parts List
1
2
4
5
6
3
7
8