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Modbus Communication

8.6 Network Connections

The 9186 uses RS485 digital communications. RS485 is multi-drop network,
meaning multiple devices can be “daisy chained” on a single pair of wires.

8.6.1 RS485 Connections

lists the connections to the RS485 network.

8.6.2 Terminator

To preventing “ringing” on the RS485 network, a terminator jumper is provided on
the RS485 interface board, next to connector K101. The terminator should be
enabled on the last device on the network. Set the jumper as follows:

Position 0

—Terminator disabled

Position 1

—Terminator enabled (last device on RS485 network)

8.6.3 Network Cable

The recommended wire is a two-wire shielded RS485 communication cable.

8.6.4 RS232 to RS485 Converter

An optional RS232 to RS485 converter may be required to convert the RS485
signal to RS232 on Programmable Logic Controllers (PLC) or Personal
Computers (PC). Only one converter is required for each RS485 network.

Table 23 RS485 Connections

Connector

Pin

Function

57012-00 Wire Color

K101

1

Data (+)

Blue

K101

2

Data (–)

White

K9

1 or 2

GND

Shield

Hach Catalog Number

Belden Part Number

Cable Type

57012-00

9841

2-wire Shielded

Hach Catalog Number

Description

57378-00

Isolated RS232 to RS485 converter, 115 V ac

57379-00

Isolated RS232 to RS485 converter, 230 V ac

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Содержание 9186

Страница 1: ...Catalog Number 621 691 086 9186 Oxygen Scavenger Analyzer INSTRUMENT MANUAL 03 04 1ed Hach Company 2004 All rights reserved eac dp 03 04 1ed...

Страница 2: ...ischarge ESD Considerations 16 4 4 3 Wiring the Instrument for Power 17 4 4 4 Alarm Connections 18 4 5 Terminal Strip and Wiring Connections Descriptions 21 4 6 Using the Flow Meter 22 Section 5 Progr...

Страница 3: ...1 Introduction 39 8 2 Modbus Settings 39 8 2 1 N 39 8 2 2 Baud 39 8 2 3 Parity 39 8 2 4 Stop Bit 39 8 2 5 Swap Word 39 8 3 Modbus Function Codes 39 8 3 1 Read Input Registers Function Code 03 40 8 4 W...

Страница 4: ...ent references the instruction manual for operation and or safety information This symbol when noted on a product enclosure or barrier indicates that a risk of electrical shock and or electrocution ex...

Страница 5: ...low voltage less than 30 V RMS and 42 2 V PEAK or 60 V dc Do not use a combination of high and low voltage Alarm Connection Connection made by four removable two position terminals through one of fou...

Страница 6: ...of 3 electrode amperometry A polarization voltage 480 mV is applied between a platinum anode working electrode and a stainless steel cathode counter electrode The oxygen scavenger is oxidized at the s...

Страница 7: ...3 Reference Electrode Cat No 368429 00000 8 Venturi Block Cat No 09186 C 0110 4 Counter Electrode 9 J shaped piece of Tubing Cat No 09186 A 0200 5 Working Cell Cat No 09186 A 0300 and Temperature Ele...

Страница 8: ...gravity drain 4 Sample line from flow controller to measuring cell 9 Flow Meter 5 In Line Filter Cat No 363877 06000 2 3 2 C D i s p l a y 2 2 M e n u C l O p p m 0 0 6 5 9 1 0 0 R E s c Hach Company...

Страница 9: ...tensity Curve Figure 4 Current vs Hydrazine Concentration 0 20 20 40 60 80 100 120 140 160 180 200 220 360 ppb 180 ppb 270 ppb 90 ppb 0 ppb 0 00 0 20 40 60 ppb O2Red 80 100 120 140 160 180 200 10 00 2...

Страница 10: ...ourself with handling precautions dangers and emergency procedures always review the Material Safety Data Sheets prior to handling containers reservoirs and delivery systems that contain chemical reag...

Страница 11: ...TER M 9100 R Esc Enter on off zero min 787 0 mm 30 98 inches 270 0 mm 10 62 inches 8 89 mm thru 0 35 inches 4 holes 15 0 mm 0 60 inches Typical 228 0 mm 8 97 inches 117 0 mm 4 60 inches 3 17 mm 0 125...

Страница 12: ...of the electrode to the female end of the red connector on the measuring cell 5 Pull the electrode from the electrode storage bottle 6 Screw the electrode into the hole at the top of the measuring cel...

Страница 13: ...is too close to points of chemical additions to the process stream if mixing is inadequate or if the chemical reaction is incomplete Selecting a good representative sampling point is important for op...

Страница 14: ...ransmitter 14 Pressure Regulator 7 Flow Meter 15 Barbed Fitting for 3 8 inch atmospheric drain tubing 8 Measuring Cell 16 Flow Meter 23 2 C Display 2 2 Menu ClO ppm 0 065 5 10 15 l h WATER M 9100 R Es...

Страница 15: ...ith an approved NEMA style strain relief and a standard 115V North American style plug Hach Cat No 46306 00 or a 230V VDE approved power cord with an approved NEMA style strain relief and a Continenta...

Страница 16: ...h as printed circuit cards and the components on them discharge static electricity from your body This can be accomplished by touching an earth grounded metal surface such as the chassis of an instrum...

Страница 17: ...ment power before opening the analyzer door 2 Remove the four screws from the front cover Open the cover Remove the internal shielding plate 4 4 3 3 Strip the outside insulation of each wire back inch...

Страница 18: ...removal can be made with an external switch and a 3 amp fuse or with a switched 3 amp circuit breaker 1 Remotely disconnect all instrument power before opening the analyzer door 2 Strip the insulatio...

Страница 19: ...ation on the outer jacket back 7 inches Remove the conductors from the shield 4 Cut the shield to 1 inch Connect it to the ground on the shielding plate Note Use a twisted pair shielded cable Use of n...

Страница 20: ...ion seats against the connector Refer to Figure 16 and Table 1 on page 21 4 Tighten the connectors using a small flat head screwdriver Firmly tug on each wire to assure solid connections 5 Reinstall t...

Страница 21: ...al Shielding White 18 AWG GND ac Power Supply Main power supply 100 240 V ac 50 60 Hz Green Green yellow GND PE White Blue neutral N Black Brown hot L Relays Alarm 1 Simple contact user Alarm 2 Simple...

Страница 22: ...ted on the instrument identification plate Turn on power to the transmitter The transmitter performs a self test and displays an initial value 1 K5 Not used with Hydrazine 5 K9 Internal Shield Connect...

Страница 23: ...menu selections programming calibration maintenance and service and press ENTER to view Press ESC to go back to the previous screen Press the LEFT ARROW key to scroll through the menu See Table 2 for...

Страница 24: ...TEMP COMP SENSOR NTC AD590 TYPE Auto Manual ALARMS ALARMS 1 4 AFFECT Conc C No LIM Set value DIR Down Up DELAY Set value HYST Set value RELAY NO NC mA OUTPUTS OUTPUT 1 2 AFFECT Conc mA C TYPE 4 20 0 2...

Страница 25: ...RAMETERS HISTORIC DISPLAYS HISTORIC VALUES MAINTENANCE Enter password if necessary SERVICE AVERAGE AVERAGE Set value TEST SERVICE DISPLAY CONC ppb ppm g mg L TEMP C F LANGUAGE GB D Sp I F CODE CALIB S...

Страница 26: ...e event of manual acknowledgment to the external alarm device the relay remains activated even if the fault is resolved Press ENTER to deactivate the relay and accompanying error message In the event...

Страница 27: ...he time interval between two active cycles minutes Nb IMPUL X Define the number of impulses during the active cycle Ton XXXs Set the activation time seconds for each impulse Toff XXXs Set the deactiva...

Страница 28: ...press the RIGHT ARROW key 2 Use the LEFT ARROW key to highlight PROGRAMMING Press ENTER 3 Use the LEFT ARROW key to highlight MEASURE Press ENTER 4 Press ENTER to select TEMP COMP 5 In the TYPE field...

Страница 29: ...Conc A C F Used to determine whether the analog output is assigned to current concentration or temperature measurement TYPE 0 20 or 4 20 Used to select the analog output range MODE Lin or Bi lin Choo...

Страница 30: ...1 Connect an ammeter to the terminals of the analog outputs 2 From the Main screen push the RIGHT ARROW key 3 Use the LEFT ARROW key to highlight SERVICE Press ENTER 4 Use the LEFT ARROW key to highli...

Страница 31: ...Values 1 From the Main display press the RIGHT ARROW key 2 Use the LEFT ARROW key to highlight SERVICE Press ENTER 3 Use the LEFT ARROW key to highlight DEFAULT VAL Press ENTER 4 Press Yes You will re...

Страница 32: ...ON Press ENTER 4 Choose the frequency of your power source Press ESC to return to Display 2 5 13 Using the Maintenance Function Use this function during all instrument maintenance operations The Instr...

Страница 33: ...e screen 7 Adjust the displayed temperature to the actual value of the sample in degrees Celsius Press ESC The deviation between the calibration and the sensor theoretical response curve is provided 6...

Страница 34: ...rocesses that have significant variations in chlorine concentration i e in a water tower the calibration point should be found in the upper values rather than in the lower values This maximizes the pr...

Страница 35: ...he sample for reference analysis from the inlet tube before it enters the analyzer because a significant amount of hydrazine is consumed during passage through the measurement cell 1 From the Main dis...

Страница 36: ...PROGRAMMING mA OUTPUTS OUTPUT 1 or 2 Timer Icon appears When the S4 relay is used as a Timer a countdown is displayed for the start of the relay execution cycle This countdown is expressed in hours mi...

Страница 37: ...n To verify pH for 10 2 use DIPA supplied by Hach Cat No 28344 53 Monoethyamine diethylamine and ammonia can also be used 7 1 2 Replacing the Tubing Replace the tubing annually Use only Kynar or Teflo...

Страница 38: ...sure 7 2 3 Cleaning the Measuring Block Once a month check the platinum anode for deposits If dirty do not remove but clean the measuring block 1 Turn off the sample flow from the flow meter 2 Using a...

Страница 39: ...serial communications This setting must match the baud rate of the Modbus master Valid choices are 300 600 1200 2400 4800 9600 or 19200 The default setting is 19200 8 2 3 Parity This menu item selects...

Страница 40: ...to be written Registers are addressed starting at zero The following message writes the value 5 to register 40004 see Table 15 Table 16 shows the response Table 13 Read Input Register Query Field Name...

Страница 41: ...01 Function 06 Starting address high byte 00 Starting address low byte 03 Data high byte 00 Data low byte 05 CRC high byte B9 CRC low byte C9 Table 17 Write Multiple Input Registers Query Field Name...

Страница 42: ...sed on the IEE 754 standard If the floating point numbers are displayed incorrectly the word order may need to be swapped See section 8 2 5 on page 39 for more information on swapping words within flo...

Страница 43: ...2 R R40076 Temperature measurement 40004 Float 2 R 27 Intensity measurement 40006 Float 2 R 28 Flow rate measurement 40008 Float 2 R R40075 Concentration of calibration offset 40010 Float 2 R R40075 C...

Страница 44: ...ation 40052 Integer 1 R W Range output signal 1 40053 Integer 1 R W Output signal type 1 40054 Float 2 R W Recorder 1 minimum 40056 Float 2 R W Recorder 1 middle 40058 Float 2 R W Recorder 1 maximum 4...

Страница 45: ...tion 4 E Extinction 5 m 1 per meter 6 FNU Formazin nephelon unit 7 NTU nephelometric turbidity unit 8 TE F German Formazin nephelometric unit 9 EBC European brewery congress 10 percent 11 nm nanometer...

Страница 46: ...ed Position 1 Terminator enabled last device on RS485 network 8 6 3 Network Cable The recommended wire is a two wire shielded RS485 communication cable 8 6 4 RS232 to RS485 Converter An optional RS232...

Страница 47: ...calibration parameters TEMPERATURE ERROR Check for short circuit or open circuit CURRENT TOO LOW Negative current Check the electrode electrolyte and membrane CURRENT TOO HIGH Ensure that there are no...

Страница 48: ...board operation external interference 1 Re initialize by turning the instrument off for 5 to 10 seconds 2 Check the keys once more 3 If there is no change call technical support Bad key pad or displa...

Страница 49: ...2H4 09180 A 6200 Flow meter 510100 01610 Fuse 2A 250V 295 100 203 In line filter qty 1 363877 06000 Instruction Manual 621 691 087 Isolated RS232 to RS485 converter 115 V ac optional 57378 00 Isolated...

Страница 50: ...you send e mail to intl hach com or contact Hach Company World Headquarters Loveland Colorado U S A Telephone 970 669 3050 Fax 970 669 2932 Technical and Customer Service U S A only Hach Technical and...

Страница 51: ...h Sales Service Canada Ltd 1313 Border Street Unit 34 Winnipeg Manitoba R3H 0X4 800 665 7635 Canada only Telephone 204 632 5598 FAX 204 694 5134 E mail canada hach com In Latin America the Caribbean t...

Страница 52: ...mpted repair not authorized by Hach Company Any product not used in accordance with the instructions furnished by Hach Company Freight charges to return merchandise to Hach Company Freight charges on...

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