National Instruments FieldPoint FP-PWM-520 Operating Instructions Manual
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National Instruments FieldPoint FP-PWM-520 Operating Instructions Manual

National Instruments FieldPoint FP-PWM-520 Operating Instructions Manual

8-channel, 5 or 24 v pwm output module
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OPERATING INSTRUCTIONS
FP-PWM-520
8-Channel, 5 or 24 V PWM
Output Module
These operating instructions describe the installation, features, and
characteristics of the FP-PWM-520. For details on configuring
and accessing the FP-PWM-520 over a network, refer to the user
manual for the particular FieldPoint network module you are using
with the FP-PWM-520.
Features
The FP-PWM-520 is a FieldPoint pulse-width modulated (PWM)
output module with the following features:
•
Eight PWM output channels
•
0 to 100% duty-cycle capability with 12-bit resolution
•
One millisecond period resolution
•
Overcurrent protected outputs
•
Sourcing outputs compatible with sinking inputs or 24 VDC
devices
•
On/off LED indicators
•
Hot plug and play operation
•
3,000 Vrms input-to-output isolation
•
Double insulated for 250 V safe working voltage
•
Independent configuration of the output period for each
channel from 1 to 65,535 ms in 1 ms increments
FieldPoint ™ is a trademark of National Instruments Corporation. Product and company names
mentioned herein are trademarks or trade names of their respective companies.
322139B-01
© Copyright 1998, 1999 National Instruments Corp. All rights reserved. June 1999

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Summary of Contents for National Instruments FieldPoint FP-PWM-520

  • Page 1 Independent configuration of the output period for each channel from 1 to 65,535 ms in 1 ms increments FieldPoint ™ is a trademark of National Instruments Corporation. Product and company names mentioned herein are trademarks or trade names of their respective companies.

  • Page 2: Installation

    Installation The FP-PWM-520 mounts on a FieldPoint terminal base (FP-TB-xx) unit. Because of its hot plug and play operation, you can install the FP-PWM-520 onto a powered terminal base without disturbing the operation of other modules or terminal bases. The FP-PWM-520 receives operating power from the terminal base.
  • Page 3 Terminal assignments and wiring diagrams are also listed under the slide-in card on the front of the FP-PWM-520 module. Table 1. Terminal Assignments Terminal Numbers Channel 2, 18 4, 20 6, 22 8, 24 10, 26 12, 28 14, 30 16, 32 © National Instruments Corp. FP-PWM-520...

  • Page 4: Overcurrent Protection

    Pulse-Width Modulated Output Circuit The FP-PWM-520 PWM output channels have optically isolated sourcing outputs with overcurrent protection circuitry. In the ON state of the output period, a transistor is turned on between the positive external supply voltage (the V and V terminals) and the output (V ) terminal.
  • Page 5 Disconnect the external power supply from the module. • Remove the FP-PWM-520 from the terminal base. • Turn off the network module that the FP-PWM-520 is connected to. Normal operation can resume after you correct the overcurrent condition. © National Instruments Corp. FP-PWM-520...

  • Page 6: Status Indicators

    Output Channel Operation Each of the PWM output channels uses a period and a duty cycle setting to determine when to switch its output to the ON or OFF state. The output period is the only configuration attribute for each channel.

  • Page 7: Isolation And Safety Guidelines

    The isolation of the FP-PWM-520 is certified as double-insulated for normal operating voltages of 250 Vrms. Do not use the FP-PWM-520 as the only isolating barrier between human contact and working voltages of more than 250 Vrms. © National Instruments Corp. FP-PWM-520...

  • Page 8: Specifications

    Specifications The following specifications are typical for a range –40 to +70 °C, unless otherwise noted. Output Number of channels......8 Output type ........24 VDC, sourcing Supply voltage ........5 VDC or 10 to 30 VDC, user-provided Output current........1 A, with built-in overcurrent protection circuitry, 8 A maximum for all channels...
  • Page 9 Class A at 10 m Mechanical Dimensions Figure 5 shows the mechanical dimensions of the FP-PWM-520 installed on a terminal base. Dimensions are given in inches [millimeters]. 4.22 [107.19] 4.31 [109.5] 3.60 [91.44] Figure 5. Mechanical Dimensions © National Instruments Corp. FP-PWM-520...

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