## Fits Tiger 320 Series

## 16-BIT SMART 4-CHANNEL LOAD CELL MODULE

IDC Shielded Cable.

In user selectable lengths

16-pin Load Cell Terminal Block.

Din rail mount.

Up to 8 load cells, 6-wire configuration.

Ultra-low noise 16-bit

A/D Convertor.

Approaches 19-bit performance

due to software filtering.

State-of-the-art

Electromagnetic Noise

Suppression Circuitry.

Ensures signal integrity under harsh EMC environments.

On-board Digital Signal

Processor.

Choice of averaging and sample rates.

4 Averaged output.

Interface to

Tiger Meter.

T h e c o s t e f f e c t i v e s o l u t i o n t o m o n i t o r i n g u p t o e i g h t l o a d c e l l s o n f o u r i n d i v i d u a l c h a n n e l s.

Input Module

Order Code Suffix

Hardware Module Specifications

5 V DC, 130 mA maximum.

Software selectable for sensors from 1 mV/V to 20 mV/V.

Quad, independent gains. Zero X-talk between channels each having 19-bit effective resolution.

0.08 V/Count maximum.

40 nV/ C typical. 5 ppm/ C of full scale maximum. 0.003% of full scale maximum.

160 nVp-p typical at 1 Hz output rate.

10 Hz maximum, 0.5 Hz minimum.

Software Module Features

A choice of average response outputs, 0.5-10 Hz.

Choice of industry standards, 1-20 mV/V.

Some Relevant Tiger 320 Series Operating System Features

ISS7-8 Data Sheet (NZ346)

Texmate, Inc. Tel. (760) 598-9899 www.texmate.com

Page 1

### Introduction

ISS7/8 is a 4-channel smar t load cell input module that can pro vide excitation for a maximum of eight load cells. The input module can receive four independent sensor input signals through four channels from any combination of up to eight load cells.

Being a smar t input module means that it can perf orm the f ollowing pre-processing functions on the input signals of all f our channels, prior to processing in the Tiger 320 meter:

Select the line frequency for all four inputs.

Select the signal range for all four inputs.

Select the averaged output rate for all four inputs.

Input Module

Tiger 320 Series Controller

Figure 1 Up to Eight Load Cell Sensor Inputs into Four Input Module Channels

The preferred method of connecting load cells to the ISS7/8 input module is via the DIN rail mount terminal block. Unlike simple junction bo xes that combine all load cell input signals into one sensor input prior to processing in a controller, the load cell terminal block can interface eight load cells into as many as four independent sensor groups. For example, sensor input 1 could have four load cells, sensor input 2 could ha ve two load cells, sensor input 3 could ha ve one load cell, and sensor input 4 could also ha ve one load cell. This provides four averaged signals for pre-processing via the four channels of the input module's 16-bit A/D con vertor and built-in microprocessor.

Diagnostic Capability

Having four independent inputs provides a diagnostic capability to quickly detect which sensor input is s vie w faulty. Using the meter modes, all four input channel readings can be quic kly vie wed. This allows incorrectly installed, connected, or damaged load cells to be quickly identified and then repaired.

CHANNEL 1

CHANNEL 3

CHANNEL 2

CHANNEL 4

Figure 2 Viewing all Four Channels

Page 2

Texmate, Inc. Tel. (760) 598-9899 www.texmate.com

ISS7-8 Data Sheet (NZ346)

### Component Layout

### Connecting Load Cells to

### the Input Module

Weight Distribution Monitoring

Having four independent load cell inputs is also useful in the load distr ibution and wind loading areas of dr y mater ial handling. With individual inputs from each support on a silo, it is possible to detect uneven distribution of mass within the silo (See Figure 3). Wind loading is a potentially dangerous hazard with high silos, especially when empty. Setpoint alarms can be configured for each load cell to activ ate when the wind load exceeds a pre-set limit.

Figure 3 Weight Distribution in Dry Material Silo

See

Connecting Load Cells

to the Input Module for connection details

Figure 4 ISS7/8 Input Module Component La yout

Connecting the load cells directly to the input module is an option, b ut means that a maxim um of only f our load cells can be connected and processed. In most cases connecting through the terminal b lock simplifies connections and allo ws for up to eight load cells to be connected (See Figure 5).

The e xternal pinouts betw een the input module and the ter minal b lock are sho wn in the tab le opposite:

1 3

2 4

9 11

Figure 5 Load Cell to Input Module Connections

ISS7-8 Data Sheet (NZ346)

Texmate, Inc. Tel. (760) 598-9899 www.texmate.com

Page 3

Connection to the DIN rail mount terminal block and the input module is via a shielded 16-wire IDC cable available in user selectable lengths. For example, the Tiger 320 controller and input module could be sited about 5 meters from the load cells. In this case, the terminal block would be located close to the load cells and connected, b y a 5 meter length of IDC cable, to the controller housed in an enclosure. Also, the controller could possib ly be linked to a central control through a serial communications link (See Figure 6).

Figure 6 Example of Three Load Cells Connected to the Meter via the Terminal Block

Alternatively, both the controller and the ter minal block could be mounted on a DIN r ail within an enclosure and connected using a standard shor t ribbon cable (See Figure 7).

Figure 7 Example of Single Load Cell Connected to the Meter via the Terminal Block

Page 4

Texmate, Inc. Tel. (760) 598-9899 www.texmate.com

ISS7-8 Data Sheet (NZ346)

### Programming Quick Start Guide

### Smart Setup Registers

The meter uses three smar t setup registers to configure smar t input modules. ISS7 and ISS8 require smart registers 1 and 2 to be set up.

This input module produces four output registers, each being the averaged result of one or more input sensors. One of these registers can be transferred to CH1 via Code 2, the same or another register tr ansferred to CH2 via Code 4, the same or another register tr ansferred to CH3 via Code 5, and the same or another register tr ansferred to CH4 via Code 6.

Smart register 1 allows you to select the following settings:

A line frequency of 50 or 60 Hz f or all four sensor inputs.

The input signal range for sensor input 1 only from 1, 2, 3, or 20 mV/V.

And the output r ate for all f our sensor inputs from 0.5, 1, 5, or 10 Hz

(Note: If more than one type of load cell is installed, the output rate selected must correspond to the load cell requir ing the fastest output rate).

Smart register 2 allows you to select the input signal r ange for sensor inputs 2, 3, and 4.

Smart Setup Register Operational Flow Diagram

Averaged Sensor Input 1

Averaged Sensor Input 2

Averaged Sensor Input 3

Averaged Sensor Input 4

### Programming Procedures

Press the

and

buttons at the same time to enter the main prog ramming mode.

Press the

button three times to enter Code 2. Set Code 2 to [X77].

This setting enters the smart register 1 code setup menu.

Note the output register map is diff erent f or eac h smart input module.

Press the

button.

This men u pro vides settings unique to smart register 1 of input module ISS7/8.

ISS7-8 Data Sheet (NZ346)

Texmate, Inc. Tel. (760) 598-9899 www.texmate.com

Page 5

Using the

range of sensor 1, and the output rate common to all sensor inputs.

buttons, select the relevant line frequency rejection for all input sensors, the input

5 Press the

button. The display returns to [Cod_2] [X77].

6 Using the

output register map.

buttons, reset the 3rd digit in Code 2 to select an output register (sensor) from the

Note, sensor 1 would normally be selected as the output register as this output is tr ansferred to channel 1 in the meter.

Press the

button 3 times to enter Code 5. Set Code 5 to [X77].

Note the output register map is diff erent f or eac h smar t input module.

8 Press the

button.

This setting enters the smart register 2 code setup menu.

Note the output registers in the 3rd digit are specific to ISS7/8. These registers vary for each different smart input module.

Using the

from the 2nd digit, and select the sensor 2 input from the 3rd digit.

buttons, select the sensor 4 input from the 1st digit, select the sensor 3 input

Press the

button to save the settings.

The display toggles between [Cod_5] and [X77].

Using the

button, reset the 3rd digit to 0 to lea ve the smart register 2 menu.

Press the

and

buttons at the same time to retur n to the operational display.

Page 6

Texmate, Inc. Tel. (760) 598-9899 www.texmate.com

ISS7-8 Data Sheet (NZ346)

## Select a Channel

Select the output register for the required channels

Press the

and

button at the same time again to re-enter the main prog ramming mode.

Press the

button three times to enter Code 2.

15 Set Code 2 to [X7X]. Select the required processing r ate for sensor 1 in the 1st digit and the

required register map setting in the 3rd digit.

## CH1

If required enter Code 4 and select the required register map settings f or sensor 2 in the 2nd digit.

Note the output register map is different for each smart input module type.

## CH2

If required enter Code 5 and select the required post processing settings f or sensor 3 in the 1st digit and the required register map setting in the 3rd digit.

## CH3

If required enter Code 6 and select the required post processing settings f or sensor 4 in the 1st digit and the required register map setting in the 3rd digit.

Note the output register map is different for each smart input module type.

## CH4

Press the

button to save the settings.

Press the

time to return to the operational display.

buttons at the same

and

ISS7-8 Data Sheet (NZ346)

Texmate, Inc. Tel. (760) 598-9899 www.texmate.com

Page 7

### Example Setup Procedure

Our customer requires to monitor the w eight in a grain silo and also control dispensing the grain (See Figure 8).

Texmate installed an ISS7/8 input module connected to the load cells via a terminal block. Load cell sensors 2, 3, and 4 are installed belo w the silo legs and are used to monitor the silo w eight. They are 20 tonne sensors with a 20 mV/V sensor signal. Load cell sensor 1 is used to control grain dispensing and is a 100 kg sensor with a 2 mV/V sensor signal.

All four load cells are configured with a 10 Hz output r ate. This is necessary to keep up with the rate the grain is emptied from the silo.

1 Select 50 Hz input line frequenc y, with a 10 Hz averaged output rate for all sensors. Select a 2 mV/V sensor input for sensor 1:

then press

button.

Display toggles between

Set

2 Select 20 mV/V voltage range for sensors 2, 3, and 4:

reset to

then press

button.

Display toggles between

Set

3 Select sensor 1 as the dispensing weight f or CH1:

select

4 Select the silo leg sensor 2 load cell f or CH2:

select

5 Select the silo leg sensor 3 load cell f or CH3:

select

6 Select the silo leg sensor 4 load cell f or CH4:

select

Figure 8 Example 1: Monitoring Weight and Distribution

### Customer Configuration Settings:

1st Digit

2nd Digit 3rd Digit

## CH1

## CH2

## CH3

## CH4

1st Digit

2nd Digit 3rd Digit

1st Digit

2nd Digit 3rd Digit

1st Digit

2nd Digit 3rd Digit

1st Digit

2nd Digit 3rd Digit

For product details visit www.texmate.com

Tel: 1-760-598-9899 USA 1-800-839-6283 Thats 1-800-TEXMATE

Page 8

Texmate, Inc. Tel. (760) 598-9899 www.texmate.com

ISS7-8 Data Sheet (NZ346)

### About TexMate

Texmate is an American manufacturer of high durability industrial grade panel meters, bar graphs, and transducers. Texmate's meters are frequently equipped with relays and various signal outputs for industrial automation applications and are known for their extremely long service life.