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HM1525 Weigh Scale Module

Page 12

Specifications - HM1734-WM Strain Gage Input Module

Module Location

1734-TOP (screw terminal) or 1734-TOPS (spring loaded terminal)

Type of input

Strain Gage (350 ohm, 700 ohm)

Gage Excitation Voltage

5 Volt

Input Impedance

5.11 meg. ohm

Display Resolution

Up to .0025% of full scale

Module Accuracy

Dependent on Load Cell Specification

Module Update Time

Software selectable from 2ms to 100ms

Number of Channels

2 (isolated)

A/D Conversion Method

Successive Approximation - 24 bit

Normal Mode Rejection:

(b/- input)

116DB CMRR

Amplifier Bandwidth

200 kHz

Calibration

Software Selectable

Isolation:

500 VDC continuous between inputs

and chassis ground, and between input

and backplane

LED indicators

2 LED's for Power and Alarm

Recommended Cable

Strain Gage Cable (Helm part number 6117)

Operating Temperatures

0°C to 60°C (32°F to 140°F)

Emissions

CISPR 11

Group 1, Class A

Pointbus Current

5V @ 72ma

External Power

24V @ 19.5ma

Dimensions

2.21H x 0.47W x 2.97L (Millimeters 56H x 12W x 75.5L)

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Summary of Contents for HM1525

Page 1: ...odel HM1525 10 05 2018 Instruction Manual October 2018 1769 Weigh Scale Module Helm Instrument Company Inc 361 West Dussel Drive Maumee Ohio 43537 USA 419 893 4356 Fax 419 893 1371 www helminstrument com ...

Page 2: ...many variables and requirements associated with any particular installation the Allen Bradley Company or Helm Instrument Company cannot assume responsibility or liability for actual use based on the examples and diagrams No patent liability is assumed by Allen Bradley Company or Helm Instrument Company with respect to use of information circuits equipment or software described in this manual Repro...

Page 3: ... an automation control system that used Allen Bradley small logic controllers You should understand electronic process control and be able to interpret the ladder logic instructions required to generate the electronic signals that control your application If you do not contact your local Allen Bradley representative for the proper training before using this product This manual is a learning and re...

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Page 9: ...nal tare value for zero state Useful when troubleshooting load cell wiring or other failures TARE CH1 CH2 Sets A D value to zero READ ADTRIM BIT HELM Factory setting only CH1 CH2 AUTO TUNE BITS Set to 1 when in auto cal mode Reference cal weight on before setting bit READ SCALE SET BIT Set to 1 to verify CH1 CH2 scale sets ENABLE FILTER BITS Set to 1 to enable 60 50 h2 filter CH1 CH2 FILTER ON BIT...

Page 10: ... Useful for Auto Tare functions with production runs Set only one bit ZEROBAND_025 025 full scale ZEROBAND_05 05 full scale ZEROBAND_075 075 full scale Auto tare occurs when load cell weight is at bit level or lower READ MV V BIT Check verify mV V settings READ CAL FACTOR BIT Check auto cal values SAVE TO EEPROM Stores CH1 CH2 scale settings AUTO CAL MODE Set to 1 for auto cal mode SET CH1 SCALE B...

Page 11: ...IGH VALUE CH1 CH1_WEIGHT_MOD1 CH2_WEIGHT_MOD1 Reports measured weigh value in RUN mode Reports raw A D count value in CAL mode SET AVERAGE SAMPLE COUNT SMAPLE_SET_MOD1 Set number of samples to take for average type filter SET mV V CH1 CH2 CH1_MV_V MOD1 CH2_MV_V MOD1 CH1 CH2 MV_V Settings Enter 2000 for 2 0 mV V Actual value is from load cell specification FILTER TIME _MOD1 FILTER_TIME_MOD1 Each co...

Page 12: ...rom 2ms to 100ms Number of Channels 2 isolated A D Conversion Method Successive Approximation 24 bit Normal Mode Rejection between input 116DB CMRR Amplifier Bandwidth 200 kHz Calibration Software Selectable Isolation 500 VDC continuous between inputs and chassis ground and between input and backplane LED indicators 2 LED s for Power and Alarm Recommended Cable Strain Gage Cable Helm part number 6...

Page 13: ...channel at scale parameter 2 Tare 0 with no weight on cell scale 3 Apply known load test weight to load cells scale 4 Set AUTOCAL bit on for CH1 CH2 if applicable 5 Turn bit off before removing known weight 6 To ensure accuracy repeat the steps above 7 Toggle save to eeprom bit ...

Page 14: ...HM1525 Weigh Scale Module Page 14 SETTING UP HM1525WM MODULE Step 1 Add module to project as following HM1525WM MODULE PROPERTIES General Tab Settings Connection Tab Settings ...

Page 15: ...en Template file Copy all controller tags Open project file Paste controller tags Duplicates may be created delete them now Step 3 Open Template file Copy add on instruction HM1525WM Open project file Paste add on instruction in add on s section ...

Page 16: ...HM1525 Weigh Scale Module Page 16 Step 4 Open Template file Copy weightmodule1 Open project Paste weighmodule1 Check program tag here should be as Example ...

Page 17: ...HM1525 Weigh Scale Module Page 17 Step 5 Check routine for entries ...

Page 18: ...bit Set Ch2 scale Output_bits_mod1 13 bit Ch1 auto tune Output_bits_mod1 14 bit Ch2 auto tune Output_bits_mod1 15 bit Read scale sets Parameter_bits_mod1 0 BOOL Msf 1 2 Parameter _bits_mod1 1 BOOL Msf 2 4 Parameter _bits_mod1 2 BOOL Msf 4 8 Parameter _bits_mod1 3 BOOL Msf 5 10 Parameter _bits_mod1 4 BOOL Msf 6 12 Parameter _bits_mod1 5 BOOL Msf 7 13 Parameter _bits_mod1 6 BOOL Msf 8 14 Parameter _...

Page 19: ...Controller Tags Data Tags Name Data Type Ch1_mv_v_mod1 INT Ch1_scale_mod1 DINT Ch1_weigh_mod1 DINT Ch2_mv_v_mod1 INT Ch2_scale_mod1 DINT Ch2_weight_mod1 DINT Filter_time_mod1 INT Mode_set_bits_mod1 INT Parameter_bits_mod1 INT Sample_set_mod1 INT ...

Page 20: ...stall the processor into the MicroLogix 1500 Base unit MicroLogix 1500 Processor Installation Instructions 1764 IN002A ML P Selecting Discrete Input Output Modules Compact Discrete Input Output Modules Technical Data 1769 2 1 View power usage of expansion modules to determine power supply requirements Expansion Modules System Qualifier RA Website Download End Cap Installation Compact I O End Caps ...

Page 21: ... word is valid only when the channel is enabled Gain Amplification of an input signal Load Force Measurement of impact during a machine cycle Sensors provide the input for this measurement LSB Least Significant Bit Refers to a data increment defined as the full scale range divided by the resolution The bit that represents the smallest value within a string of bits Remote Configuration A control sy...

Page 22: ...uch as this one provide information not procedural steps Numbered lists provide sequential steps or hierarchical information Contact your Helm representative or call Helm direct at 419 893 4356 sales and order support product technical training warranty support support service agreements Your Questions or Comments on this Manual If you have any suggestions for how this manual could be made more us...

Page 23: ...e best After all that s what our business is all about providing innovative instrumentation to help make your manufacturing process more productive and your operation more effective The Helm Weigh Scale combines machine and tooling monitoring with programmable limit switch function User programmable high and low limits protect the machine and tooling to ensure part quality Critical setup informati...

Page 24: ...cept input from two sensors The module has no output channels Module configuration requires manual and user programmable setup The Weigh Scale module receives and stores digitally converted analog data into its image table for retrieval by processor The module supports connections from any combination of up to two strain gage sensors Any combination of Helm Strain Gage sensors can be used Contact ...

Page 25: ... listed It does however reference other chapters in this book where you can get more information about applying the procedures described in each step If you have any questions or are unfamiliar with the terms used or concepts presented in the procedural steps always read the referenced chapters and other recommended documentation before trying to apply the information This chapter will Tell you wh...

Page 26: ...han 3 modules Each individual channel on the module can receive input signals from strain gage based sensors The module converts the analog values directly into digital values The sensors are wired to the modules using the rightmost bank of inputs The pin out is shown below Sensor Wiring System Operation To ensure proper operation and high immunity to electrical noise always use Helm strain gage c...

Page 27: ...Step 1 Balance Sensor Input 1 Set to Cal Mode 2 Press Clear Tare for each channel 3 Check balance value should be 131 000 counts Step 2 Set Calibration Numbers 1 Set Scale to capacity of load cell 2 Set mV V to load cell specification 3 Example 100 ton load cell 2 025 mV V For scale set enter 100 For mV V set enter 2025 4 Push Set CH1 Set CH2 Scale Push Save to eeprom 5 Set to Run Mode HT 400 Sens...

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