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Spectrum Controls SLC 500 1746sc-INO4i Owner's Manual

Isolated analog output modules
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Owner's Guide 0300128-03 Rev. D
™
SLC 500
I
SOLATED
A
O
M
NALOG
UTPUT
ODULES
Catalog Numbers
1746sc-INO4i
1746sc-INO4vi

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Summary of Contents for Spectrum Controls SLC 500 1746sc-INO4i

  • Page 1 Owner’s Guide 0300128-03 Rev. D ™ SLC 500 SOLATED NALOG UTPUT ODULES Catalog Numbers 1746sc-INO4i 1746sc-INO4vi...
  • Page 3 No patent liability is assumed by Spectrum Controls with respect to the use of any of the information, products, circuits, programming, or services referenced herein.

  • Page 5: Table Of Contents

    Table Of Contents Preface Who Should Use This Guide ............... iii What This Guide Covers ................iii Related Allen-Bradley Documents .............. iii Terms & Abbreviations You Should Know ........... iv Overview And Chapter 1 Specifications General Features And Benefits ..............1 Detailed Specifications.................
  • Page 6 ™ SLC 500 Isolated Analog Output Modules Maintaining Your Module Chapter 6 And Ensuring Safety Preventive Maintenance ................33 Safety Considerations ................33 Tables Table 1. Related Allen-Bradley documents ..........iv Table 2. Electrical specifications—module ........... 2 Table 3. Electrical specifications—outputs ........... 3 Table 4.

  • Page 7: Preface

    Preface Read this preface to familiarize yourself with the rest of the owner’s guide. This preface covers: • who should use this guide • what this guide covers • related Allen-Bradley documents • terms & abbreviations you should know Who Should Use This Guide Use this guide if you design, install, program, or maintain a control system that uses Allen-Bradley Small Logic Controllers.
  • Page 8 ™ SLC 500 Isolated Analog Output Modules Table 1. Related Allen-Bradley documents Allen-Bradley Doc. No. Title 1747-2.30 SLC 500 System Overview SGI-1.1 Application Considerations for Solid State Controls 1770-4.1 Allen-Bradley Programmable Controller Grounding and Wiring Guidelines 1747-6.2 Installation & Operation Manual for Modular Hardware Style Programmable Controllers 1747-NI001 Installation &...
  • Page 9 Preface Common mode voltage – The voltage difference between the negative terminal and analog common during normal differential operation. Common mode voltage range – The largest voltage difference allowed between either the positive or negative terminal and analog common during normal differential operation. Configuration word –...
  • Page 10 ™ SLC 500 Isolated Analog Output Modules Overall accuracy – The worst-case deviation of the signal over the full range, expressed in percent of full scale. Rack – A hardware assembly that houses devices such as I/O modules, adapter modules, processor modules, and power supplies. Repeatability –...

  • Page 11: Overview And Specifications

    Chapter 1 Overview And Specifications The 1746sc-INO4i provides four isolated channels of current outputs, while the 1746sc-INO4vi provides four isolated channels of current or voltage outputs (in any combination). In both modules, the voltage and/or current ranges are independently configurable for each channel. These modules also provide new, advanced features to make your control systems more dependable and flexible.

  • Page 12: Detailed Specifications

    ™ SLC 500 Isolated Analog Output Modules provide a single-slot solution for applications requiring up to four, mixed analog outputs, so you don’t have to buy more I/O than you need. State-of-the-Art Performance These modules incorporate proprietary Allen-Bradley technology, so they operate and perform like the latest Allen-Bradley products.
  • Page 13 Chapter 1: Overview And Specifications Table 3. Electrical specifications—outputs Output Current Ranges (selectable for each channel) 4 to 20 mA 0 to 20 mA 0 to 21 mA Output Voltage Ranges—INO4vi only (selectable for each channel) -10 to +10 Vdc 0 to 10 Vdc 0 to 5 Vdc 1 to 5 Vdc...
  • Page 14 ™ SLC 500 Isolated Analog Output Modules Table 5. Environmental specifications 0 to 60 °C (32 to 140 °F) Operating Temperature -40 to 85 °C (-40 to 185 °F) Storage Temperature Relative Humidity 5 to 95% non-condensing Certifications UL/CUL and CE Hazardous Environment Classifications Class I Division 2 Groups ABCD...

  • Page 15: Installing And Wiring Your Module

    Chapter 2 Installing And Wiring Your Module Read this chapter to install and wire your module. This chapter covers: • avoiding electrostatic damage • determining power requirements • setting the DIP switch • selecting a rack slot • inserting your module into the rack •...
  • Page 16 ™ SLC 500 Isolated Analog Output Modules The following documents contain information that may help you as you install and wire your module: • National Electrical Code, published by the National Fire Protection Association of Boston, MA • IEEE Standard 518-1977, Guide for the Installation of Electrical Equipment to Minimize Electrical Noise Inputs to Controllers from External Sources •...
  • Page 17 Chapter 2: Installing And Wiring Your Module Table 6. Backplane current consumed 24 Vdc * Catalog Number 5 Vdc w/o ext. supply w/ ext. supply 1746-sc-INO4i 120 mA 250 mA 0 mA 1746sc-INO4vi 120 mA 250 mA 0 mA * The 1746sc-INO4i and 1746sc-INO4vi output modules can use an external 24 Vdc power supply to reduce backplane loading.

  • Page 18: Selecting A Rack Slot

    ™ SLC 500 Isolated Analog Output Modules Selecting A Rack Slot Two factors determine where you should install your module in the rack: ambient temperature and electrical noise. When selecting a slot for your module, try to position your module: •...
  • Page 19 Chapter 2: Installing And Wiring Your Module To insert your module into the rack, follow these steps: 1. Align the circuit board of your module with the card guides at the top and bottom of the chassis. 2. Slide your module into the chassis until both top and bottom retaining clips are secure.

  • Page 20: Wiring Your Module

    ™ SLC 500 Isolated Analog Output Modules Wiring Your Module To wire the terminal block, you need: • a small, flat-blade screwdriver • Belden 8761 (shielded, twisted pair) cable or equivalent CAUTION POSSIBLE EQUIPMENT OPERATION Before wiring your module, always disconnect power from the SLC 500 system and from any other source to the module.
  • Page 21 Chapter 2: Installing And Wiring Your Module 4. At one end of the cable, twist the drain wire and foil shield together, bend them away from the cable, and apply shrink wrap. Foil Shield and Drain Wire Insulation Black Wire Clear Wire 5.
  • Page 22 ™ SLC 500 Isolated Analog Output Modules Figure 2. Wiring diagrams (showing differential outputs). -INO4i Not used Current output, ch. 0 load Analog ground, ch. 0 Chassis ground Not used Current output, ch. 1 load Analog ground, ch. 1 Not used Shielded, twisted-pair cable with shield Current output, ch.

  • Page 23: Things To Consider Before Using Your Module

    Chapter 3 Things To Consider Before Using Your Module Read this chapter to familiarize yourself with: • how the processor communicates with your module • channel update time • channel enable and disable times • temperature calibration time • output mode change time (-INO4vi only) •...

  • Page 24: Output Mode Change Time (-Ino4Vi Only)

    ™ SLC 500 Isolated Analog Output Modules In general, you can reduce the channel update time by disabling unused channels, as shown in the following table: Table 7. Channel update time (channels already enabled ) # of ch. enabled Time Current output 24.3 ms (typical) 27.3...

  • Page 25: Using Your Output Module

    Chapter 4 Using Your Output Module Read this chapter to: • enter your output module’s ID code • configure each output channel • set the output data limits or user-defined scale (optional) • control each output channel’s signal • monitor each output channel •...
  • Page 26 ™ SLC 500 Isolated Analog Output Modules No special I/O configuration (SPIO CONFIG) information is required. The module ID code automatically assigns the correct number of input and output words for the processor to access. Figure 4. Output and input words Address O:e.0 Channel 0 Output Data Word...
  • Page 27 Chapter 4: Using Your Output Module Output Image The 8-word, output image (defined as the output from the SLC processor to your module) defines how each channel on your module works: • The output data words control output signal levels for each channel. •...

  • Page 28: Configuring Each Output Channel

    ™ SLC 500 Isolated Analog Output Modules Configuring Each Output Channel After installing your module, you must configure each channel by setting bit values in each configuration word. Output words 4 and 5 of the output image file (addresses O:e.4 and O:e.5) configure channels 0–1 and 2–3, respectively.
  • Page 29 Chapter 4: Using Your Output Module Output Channel Enable (configuration bits 0 and 8) Use this bit to enable or disable a channel. To minimize update times, disable any unused channels. When you set the channel enable bit to one, the module reads the configuration word.
  • Page 30 ™ SLC 500 Isolated Analog Output Modules Table 10. Data format definitions Selected Data Value (counts) Corresponding Signal Data Format Output Range Min. Max. Min. Max. ±10 V Engineering Units -10250 +10250 -10.25 V +10.25 V 0–10 V -500 +10250 -0.50 V +10.25 V 0–5 V...

  • Page 31: Optional: Setting The Output Data Limits (Or User-Defined Scale)

    Chapter 4: Using Your Output Module Reset Output Or Hold Last Value On Fault (configuration bits 7 and 15) Use this bit to select how your module responds to a fault: • If you set this bit to 1, your module holds the output signal at its last value when it detects a fault.
  • Page 32 ™ SLC 500 Isolated Analog Output Modules and the low limit (output word 6) must be lower than the high limit (output word 7). Example – Suppose you have four valves with a ±10 V operating range, and you want to use the Engineering Units data format. For this application, you would use the following bit settings for the channel configuration bytes (output words 4 and 5): Address...
  • Page 33 Chapter 4: Using Your Output Module User-Defined Scale For special applications, the 1746sc-INO4i and 1746sc-INO4vi output modules let you define a custom data format. This “user-defined scale” is very similar to the “proportional counts” data format—except that instead of converting the output data to an output signal using a previously defined scale (-32,768 to 32,767), your module converts the output data using a scale defined by the values in output words 6 (low limit of scale) and 7 (high limit of scale).

  • Page 34: Controlling Each Output Channel's Signal

    ™ SLC 500 Isolated Analog Output Modules Figure 5. Example relationship between output signal and channel data Data Value 9999 Signal Value 3.5 mA 20.5 mA In the preceding example... = 3.5 = 100 = 20.5 = 9999 high high ∆S = 17 ∆U = 9899 Controlling Each Output...

  • Page 35: Monitoring Each Output Channel

    Chapter 4: Using Your Output Module Monitoring Each Output Channel The requested output data values are reflected in words 0 through 3 of the input image file (addresses I:e.0 through I:e.3). Whenever a channel is disabled, its data word is reset to zero. Address I:e.0 Channel 0 Data Word...
  • Page 36 ™ SLC 500 Isolated Analog Output Modules Table 11. Channel status word details, Input Words 4 through 7 (I:e.4 through I:e.7) These bit settings in the status word Indicate this Bit: 15 14 13 12 11 10 Output channel disabled Output channel enabled 1–5 Vdc output range 0–5 Vdc output range...
  • Page 37 Chapter 4: Using Your Output Module The first 8 status bits reflect the settings in the channel configuration word. The remaining status bits flag the various errors that the module can detect. Output Data Limiting Enabled (status bit 8) This bit is set to one whenever output data limiting is properly enabled. To properly enable output data limiting, the low and high output limits (output words 6 and 7, respectively) musts be non-zero and non-equal, and the low limit (output word 6) must be lower than the high limit...
  • Page 38 ™ SLC 500 Isolated Analog Output Modules Fatal Channel Error (status bit 15) This bit is set to one whenever your module detects a “non-recoverable” channel error, such as a software power-up failure due to corrupt hardware or malfunctioning software. You may be able to recover from this type of error by resetting the SLC 500 processor or cycling power to your module.

  • Page 39: Testing Your Module

    Chapter 5 Testing Your Module Read this chapter to prevent potential problems. This chapter covers: • inspecting your module • disconnecting prime movers • powering up • interpreting the LED indicators • interpreting I/O error codes • troubleshooting Before testing your module, test your SLC 500 system using the procedures described in your Allen-Bradley system Installation &...

  • Page 40: Powering Up

    ™ SLC 500 Isolated Analog Output Modules Disconnecting Prime Movers Before testing your module, ensure that machine motion will not occur: • Disconnect motor wires at the motor starter or the motor itself. This lets you test the operation of the starter coil, verifying that the output circuit is wired correctly and functioning.

  • Page 41: Interpreting The Led Indicators

    Either the power is off, the module is powering up, or a module fault occurred. Cycle power. If the condition persists, call your local distributor or Spectrum Controls for assistance. Interpreting I/O Error Codes I/O error codes appear in word S:6 of the SLC processor status file. The first two digits of the error code identify the slot (in hexadecimal) with the error.

  • Page 42: Troubleshooting

    ™ SLC 500 Isolated Analog Output Modules Troubleshooting Figure 7. Problem resolution flowchart Check LEDs on module. Module Module Status LED Status LED off. Module fault condition. Channel Channel Channel Status LED(s) Status LED(s) Status LED(s) blinking. off. Check to see that module is Fault Channel is...
  • Page 43 Chapter 6 Maintaining Your Module And Ensuring Safety Read this chapter to familiarize yourself with: • preventive maintenance • safety considerations The National Fire Protection Association (NFPA) recommends maintenance procedures for electrical equipment. Refer to article 70B of the NFPA for general safety-related work practices. Preventive Maintenance The printed circuit boards of your module must be protected from dirt, oil, moisture, and other airborne contaminants.
  • Page 44 ™ SLC 500 Isolated Analog Output Modules Standing Clear Of Machinery – When troubleshooting a problem with any SLC 500 system, have all personnel remain clear of machinery. The problem may be intermittent, and the machine may move unexpectedly. Have someone ready to operate an emergency stop switch. CAUTION POSSIBLE EQUIPMENT OPERATION Never reach into a machine to actuate a switch.
  • Page 47 ESD packaging (such as static-shielding / metallized bag or black conductive container). Spectrum Controls reserves the right to void the warranty on any unit that is improperly packaged for shipment. For further information or assistance, please contact your local distributor or call Spectrum Controls Customer Satisfaction department at (425) 746- 9481 from 8:00 A.M.
  • Page 48 The ENCOMPASS logo and SLC 500 are trademarks of Allen-Bradley Company, Inc. Copyright © 1997-2004 Spectrum Controls, Inc. All rights reserved. Printed in U.S.A. Specifications subject to change without notice. Publication 0300128-03 Rev. D May 2004 Corporate Headquarters Spectrum Controls Inc.

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Slc 500 1746sc-ino4vi

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