National Instruments FP-CTR-502 Operating Instructions Manual
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National Instruments FP-CTR-502 Operating Instructions Manual

National Instruments FP-CTR-502 Operating Instructions Manual

Eight-channel, 16-bit counter module
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Summary of Contents for National Instruments FP-CTR-502

  • Page 1 cFP-CTR-502...
  • Page 2 FieldPoint™, National Instruments™, NI™, and ni.com™ are trademarks of National Instruments Corporation. Product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering National Instruments products, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your CD, or ni.com/patents .
  • Page 3 FP-CTR-502 onto a powered terminal base does not disrupt the operation of the FieldPoint bank. To install the FP-CTR-502, refer to Figure 1 and complete the following steps: 1. Slide the terminal base key to either position X, used for any module, or position 8, used for the FP-CTR-502 module.
  • Page 4 3 cFP Controller Figure 2. Installing the cFP-CTR-502 Wiring the [c]FP-CTR-502 The FP-TB-x terminal base has connections for each FP-CTR-502 channel and for an external power supply to power the input channels and field devices. The cFP-CB-x connector block provides the same connections for the cFP-CTR-502. The V and terminals are all internally connected, as are the C and COM terminals.
  • Page 5 Count Inputs Count Input 0 Count Input 1 Count Input 2 Count Input 3 Count Input 4 Count Input 5 Count Input 6 Count Input 7 Gate Inputs Gate 0 Gate 1 Gate 2 Gate 3 FP-CTR-502 and cFP-CTR-502 ni.com...
  • Page 6 , the voltage across V and COM, is lower than V threshold the channel is ON. Therefore, if you connect a 24 V power supply to the [c]FP-CTR-502, an input channel registers an ON state when © National Instruments Corp. FP-CTR-502 and cFP-CTR-502...
  • Page 7 COM terminals that can supply power to field devices. The [c]FP-CTR-502 has sinking outputs, which means that V provides a path to ground. You can connect the [c]FP-CTR-502 outputs to sourcing-input devices. In the ON state, a transistor is turned on between the output (V and common (C and COM).
  • Page 8 [c]FP-CTR-502 Figure 4. Wiring an Output Channel to a Sourcing-Input Device If you connect a [c]FP-CTR-502 output to an externally powered sourcing-input device, be aware that the voltage applied to the terminal by the external device must not exceed the voltage level of the power supply connected to the [c]FP-CTR-502.
  • Page 9 Channel Status In FieldPoint software, the [c]FP-CTR-502 reports one of the following statuses: Successful Overflow since last .
  • Page 10 Value menu. A read-initiated reset also resets any outputs associated with the target channel. The default is Don’t Reset On Read. Note Read Reset mode is not intended to be used with FieldPoint Ethernet network modules. © National Instruments Corp. FP-CTR-502 and cFP-CTR-502...

  • Page 11: Noise Rejection

    Data from the Value menu if you want to use this channel as a generic digital output. When you write data to an output channel, you affect the output state only if you configure the Output Source as Discrete Data. FP-CTR-502 and cFP-CTR-502 ni.com...

  • Page 12: Output Mode

    In Figure 8, the terminal count is 4. Count Input Output Figure 8. Output of a Channel Set to Toggle, Reset On Mode © National Instruments Corp. FP-CTR-502 and cFP-CTR-502...
  • Page 13 The output channel returns to high after one count. In Figure 10, the terminal count is 4. Count Input Output Figure 10. Output of a Channel Set to Off Pulse Mode FP-CTR-502 and cFP-CTR-502 ni.com...
  • Page 14 Application Note: Generating a Continuous Pulse Train You can use two [c]FP-CTR-502 count-input channels and one output channel to generate a continuous pulse train with a controllable duty cycle and period. The first count-input channel serves as a clock prescaler and divides the input clock by a fixed value.
  • Page 15 4. Set the Count Source of the prescaler counter to the clock on which you want to base your pulse train. This can be the external counter input or one of the [c]FP-CTR-502 internal references. 5. Subtract 1 from the value that you want to divide the input clock by, and set the terminal count of the prescaler counter to the result.
  • Page 16 ) is the same as that shown in Step 2. Set Up pulse the Pulse Counter , but the output frequency is half that value when you set the output channel to one of the toggle modes. © National Instruments Corp. FP-CTR-502 and cFP-CTR-502...

  • Page 17: Status Indicators

    Status Indicators Figure 12 shows the status indicator LEDs on the [c]FP-CTR-502. Figure 12. Status Indicators The [c]FP-CTR-502 has two green status LEDs, POWER and READY. After you install the [c]FP-CTR-502 onto a terminal base or backplane and apply power to the connected network module, the green POWER indicator lights and the [c]FP-CTR-502 informs the network module of its presence.
  • Page 18 Follow these guidelines to ensure a safe total system. • The [c]FP-CTR-502 has a safety isolation barrier between the I/O channels and the inter-module communication bus. There is no isolation between channels unless otherwise noted. If any of the channels on a module are wired at a hazardous potential, make sure that all other devices or circuits connected to that module are properly insulated from human contact.

  • Page 19: Specifications

    Number of channels......4 Output type ........5–30 VDC sinking, compatible with TTL devices and other 5, 12, or 24 VDC devices Supply voltage ........5–30 VDC, user-provided The operating range of the cFP-CTR-502 is –40 to 60 °C. FP-CTR-502 and cFP-CTR-502 ni.com...

  • Page 20: Power Requirements

    Physical Characteristics Indicators .......... Green POWER and READY indicators, 16 green input/output state indicators Weight FP-CTR-502 ....... 143 g (5.0 oz) cFP-CTR-502 ......113 g (4.0 oz) Power Requirements Power from network module .... 800 mW Isolation Voltage Channel-to-channel isolation .... No isolation between channels Transient overvoltage......

  • Page 21: Electromagnetic Compatibility

    CE, C-Tick, and FCC Part 15 (Class A) Compliant Emissions.......... EN 55011 Class A at 10 m FCC Part 15A above 1 GHz Immunity........... EN 61326:1997 + A2:2001, Table 1 Note For EMC compliance, you must operate this device with shielded cabling. FP-CTR-502 and cFP-CTR-502 ni.com...

  • Page 22: Mechanical Dimensions

    Declarations of Conformity Information at ni.com/hardref.nsf/ Mechanical Dimensions Figure 13 shows the mechanical dimensions of the FP-CTR-502 installed on a terminal base. If you are using the cFP-CTR-502, refer to your Compact FieldPoint controller user manual for the dimensions and cabling clearance requirements of the Compact FieldPoint system.

  • Page 23: Where To Go For Support

    Where to Go for Support For more information about setting up the FieldPoint system, refer to these National Instruments documents: • FieldPoint network module user manual • Other FieldPoint I/O module operating instructions • FieldPoint terminal base and connector block operating...

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