Rice Lake IQ plus 390-DC

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December 1999

IQ plus

390-DC Digital Weight Indicator

Operator Card

Do not open the indicator enclosure!

Refer all repairs and modiﬁcations to

your distributor or service technician.

This

Operator Card

describes the IQ plus 390-DC LCD display, weighing and counting operations, and

procedures for battery replacement and AC adapter use.

LCD Display and Annunciators

The IQ plus 390-DC display uses a set of LCD

annunciators to provide additional information about

the value being displayed. The illustration below

shows these annunciators and their meanings.

The displayed weight is a gross weight.

The displayed weight is a net weight.

Scale is at standstill or within the speciﬁed motion

band. Some operations, including zero, tare, and

printing functions, can only be done when the

standstill symbol is shown.

Center of zero. Gross weight is within 0.25

graduations of zero. This annunciator lights when

the scale is zeroed.

Indicates that a tare has been entered. The tare

value can be entered by pressing the

TARE

key on

the keypad or by sending the KTARE EDP

command.

Indicates that the battery charge is low.

lb, kg, PC

Three arrow annunciators on the right side of the

LCD display indicate the units associated with the

displayed value. The bottom arrow annunciator

(PC) is lit when the indicator is in piece count

mode. The top and middle arrows, labeled lb and

kg, show primary and secondary units, as

described below:

• If the displayed weight is in pounds, the top

arrow (lb) is lit; if kilograms, the middle

arrow (kg) is lit.

• If the primary unit of weight is pounds, the

middle (kg) arrow is lit for secondary units—

or, if the primary unit is kilograms, the top

(lb) arrow is lit for secondary units, unless the

secondary unit of weight is the same as the

primary unit.

• If neither primary nor secondary units are

pounds or kilograms, the top arrow is used as

a primary units annunciator and the middle

arrow is used as the secondary units

annunciator.

A set of replacement overlay decals is included in

the parts kit for units other than pounds and

kilograms.

Warning

Gross mode

Net mode

Standstill

Center of zero

Tare in system

Low battery

Displayed units

Secondary

Primary

Piece count mode

Other manuals for Rice Lake IQ plus 390-DC

Installation Manual45 pages

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The IQ plus 390-DC is a digital weight indicator designed for weighing and counting operations. It features an LCD display with various annunciators to provide additional information about the displayed values. The device is powered by six alkaline C-cell batteries or an AC adapter.

Function Description

The IQ plus 390-DC serves as a versatile digital weight indicator, capable of performing both weighing and counting tasks. It displays weight in either gross or net mode and can also show piece counts. The indicator provides visual cues through its LCD annunciators to inform the user about the current operating mode, scale status, and battery level.

Weighing Operations:

Zero Scale: Sets the gross weight to zero when no weight is on the scale and the standstill annunciator is active. This function is crucial for accurate measurements.
Acquire Tare: Allows the user to subtract the weight of a container, displaying only the net weight of the contents. This is done by placing the container on the scale, waiting for standstill, and pressing the TARE key.
Remove Stored Tare Value: The tare value can be removed by pressing the ZERO key after all weight has been removed from the scale.
Toggle Gross/Net/Piece Count Mode: Switches the display between gross weight (G annunciator), net weight (N annunciator), and piece count mode (PC annunciator). If a tare value is active, net weight is calculated as gross weight minus tare.
Toggle Units: Switches between primary and secondary units of measurement (e.g., pounds and kilograms). The units annunciator arrow on the right side of the LCD display indicates the active unit.
Print Ticket: Sends weight data to a serial port when the standstill annunciator is active.

Counting Operations:

Piece Count Mode: Entered by pressing the MODE (GROSS/NET) key from normal weighing mode. In this mode, the display shows the number of parts, and the PC annunciator is lit. The PRINT key sends data in CFMT format.
Acquire Parts Sample:
1. Place an empty container on the scale and acquire its tare weight.
2. Enter piece count mode.
3. Enter sample acquisition mode by pressing the SAMPLE (UNITS) key.
4. The display prompts for a sample quantity (e.g., "Addnnn"). The user adds the specified number of parts or selects a different sample size (5, 10, 20, 50, 100) by pressing the SAMPLE key.
5. Press ENTER to calibrate the indicator for counting the new parts. The indicator displays "–CNT–" while acquiring the sample weight, then switches to count display mode, showing the part quantity.
- Error Handling: If the sample weight is insufficient, the indicator requests a higher sample quantity. If the maximum sample (100) is still insufficient, it displays "CNTERR."
Display Part Weight: To view the gross and net weight of parts, the user can switch from count display mode to normal weighing mode by pressing MODE.
Print Ticket: Sends piece count data to the serial port when the standstill annunciator is active.

Important Technical Specifications

Display: LCD with annunciators for Gross (G), Net (N), Standstill, Center of Zero (→0←), Tare (T), Low Battery, pounds (lb), kilograms (kg), and Piece Count (PC).
Power Source: Six alkaline C-cell batteries or an AC adapter.
Enclosure: Designed for battery installation with four thumbscrews. AC adapter port cover requires specific handling to maintain NEMA 4X/IP66 rating.
Torque Specifications: Thumbscrews for battery cover and backplate should be torqued to 15 in-lb (1.7 N-m). A specific torque pattern is recommended for the backplate screws to prevent gasket distortion.
Serial Port: Used for sending weight data (PRINT key) or piece count data (CFMT format in counting mode).

Usage Features

Annunciators:
- G (Gross): Indicates gross weight.
- N (Net): Indicates net weight.
- Standstill Symbol: Lights when the scale is stable, enabling functions like zero, tare, and print.
- →0← (Center of Zero): Lights when gross weight is within 0.25 graduations of zero, typically after zeroing the scale.
- T (Tare): Indicates that a tare value has been entered.
- Low Battery Symbol: Indicates low battery charge.
- lb, kg, PC (Units): Arrows indicate the active unit (pounds, kilograms, or piece count). The top arrow (lb) and middle arrow (kg) can also indicate primary and secondary units, with specific rules for display based on the configured primary unit.
Keypad Functions (Normal Mode):
- ZERO (>0<): Sets gross weight to zero.
- GROSS/NET (B/N): Toggles between gross, net, and piece count modes.
- TARE: Acquires tare weight.
- UNITS: Switches between primary and secondary units.
- PRINT: Sends data to the serial port.
Keypad Functions (Counting Mode):
- MODE (GROSS/NET): Switches between gross, net, and piece count modes.
- TARE: Acquires tare or sample.
- SAMPLE (UNITS): Enters sample acquisition mode or changes sample quantity.
- PRINT: Sends data to the serial port in CFMT format.
Legal-for-Trade: Access to piece count mode is disabled by default for legal-for-trade applications, requiring configuration to enable it.
AC Adapter Usage: The AC adapter provides power when battery power is low or AC power is available. Only the supplied adapter should be used.

Maintenance Features

Battery Installation/Replacement:
1. Remove four thumbscrews from the battery cover.
2. Install six alkaline C-cell batteries as shown in Figure 1.
3. Replace the battery cover and reinstall thumbscrews, torquing to 15 in-lb (1.7 N-m).
AC Adapter Port Management:
- To use the AC adapter: Remove the top screw from the port cover, loosen the bottom screw, rotate the cover, reinstall the top screw, and plug in the adapter.
- When not using the AC adapter: Close the port cover and reinstall all backplate screws. Use the specified torque pattern (Figure 3) and torque to 15 in-lb (1.7 N-m) to prevent distorting the gasket.
Enclosure Integrity: The IQ plus 390-DC enclosure is rated for NEMA 4X/IP66 applications, but this rating is compromised if the AC adapter port cover is open. The AC adapter should not be used in washdown environments.
Repairs and Modifications: Users are warned not to open the indicator enclosure. All repairs and modifications should be referred to a distributor or service technician.
Overlay Decals: A set of replacement overlay decals is included in the parts kit for units other than pounds and kilograms, allowing for customization or replacement.