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National Instruments Corp.

13

FP-CTR-500 and cFP-CTR-500

Off Pulse

In Off Pulse mode, the output channel starts high and goes low 
when the terminal count is exceeded. The output channel returns to 
high after one count. In Figure 10, the terminal count is 4.

Figure 10.  

Output of a Channel Set to Off Pulse Mode

Short-Circuit Protection

If the protection circuitry detects a short-circuit condition on an 
output channel, it disables the output. If the protection circuitry 
disables an output that would otherwise be in the ON state, the 
status indicator for that channel remains lit, but the output 
transistor is turned off. 

Detecting a Short-Circuit Condition

To determine if a channel is in a short-circuit condition, measure 
the voltage between the V

OUT

 and V

SUP

 terminals. If the voltage is 

greater than 1 V, the channel is in a short-circuit condition. Correct 
the problem and reset the circuit.

Resetting a Channel in a Short-Circuit Condition

To reset a channel in a short-circuit condition, determine the cause 
of the condition and disconnect the load from the channel. The 
channel resets automatically when the load is removed.

Alternatively, if completely removing the channel load is not 
convenient, reset the channel in any of the following ways.

In FieldPoint software,write a 

0

 to the channel. The channel 

resets immediately.

Disconnect the external power supply from the 
[c]FP-CTR-500.

0

1

2

3

4

0

1

2

3

4

0

1

Output

Count

Input

Содержание FP-CTR-500

Страница 1: ...unter modules referred to inclusively as the c FP CTR 500 For information about configuring and accessing the c FP CTR 500 over a network refer to the user manual for the FieldPoint network module you...

Страница 2: ...Press firmly to seat the FP CTR 500 on the terminal base When the module is firmly seated the terminal base latch locks it into place Figure 1 Installing the FP CTR 500 Installing the cFP CTR 500 The...

Страница 3: ...nd for an external power supply to power the output channels and field devices The cFP CB x connector block provides the same connections for the cFP CTR 500 The V and VSUP terminals are all internall...

Страница 4: ...ment show fuses where appropriate Table 1 lists the terminal assignments for the signals of each channel Terminal assignments are also listed on the side panel of the cFP CTR 500 and under the slide i...

Страница 5: ...erenced to the C and COM terminals When the voltage across VIN and COM is 10 V or greater current flows through VIN and turns on the optoisolator registering in an ON state for the channel When the vo...

Страница 6: ...and COM terminals that you can use to supply power to field devices You can connect the four output channels to devices with sinking inputs The c FP CTR 500 has sourcing outputs which means that the...

Страница 7: ...75 A on any channel In the ON state the effective resistance between the output VOUT and the supply voltage V and VSUP is 0 3 This resistance causes a voltage drop between the external supply voltage...

Страница 8: ...rminal count enter a value from 0 to 65 535 in the Value field The default value is 65 535 When the count input channel exceeds its terminal count the count resets to 0 and triggers any outputs associ...

Страница 9: ...Channel 1 to Channel 0 Channel 0 to Channel 7 Channel 7 to Channel 6 and so on If you select this option for all of the channels no counting occurs Gate Source Select Gate Input 0 3 from the Value men...

Страница 10: ...ction menu The increment control command increases the count input channel in value by one The reset control command resets the count input channel The control commands ignore the gate source setting...

Страница 11: ...you configure the Output Source as Discrete Data Output Mode For each output channel select one of the following output modes from the Value menu Toggle Reset Off Toggle Reset On On Pulse or Off Pulse...

Страница 12: ...mmand to the associated count input channel In Figure 8 the terminal count is 4 Figure 8 Output of a Channel Set to Toggle Reset On Mode On Pulse In On Pulse mode the output channel starts low and goe...

Страница 13: ...off Detecting a Short Circuit Condition To determine if a channel is in a short circuit condition measure the voltage between the VOUT and VSUP terminals If the voltage is greater than 1 V the channe...

Страница 14: ...the pulse counter The pulse counter is the output source for the output channel Figure 11 shows the components of a continuous pulse train Figure 11 Continuous Pulse Train Step 1 Set Up the Prescaler...

Страница 15: ...lock by 5 If you use the 1 kHz reference as the prescaler count source this setting generates a 200 Hz clock for the pulse counter To determine the frequency of the prescaler output use the following...

Страница 16: ...for the pulse counter Step 3 Configure the Pulse Train Output Channel To configure the pulse train output channel complete the following steps 1 For the output channel that you selected set the Outpu...

Страница 17: ...network module the green POWER indicator lights and the c FP CTR 500 informs the network module of its presence When the network module recognizes the c FP CTR 500 it sends initial configuration infor...

Страница 18: ...roperly insulated from human contact Do not share the external supply voltages the V and C terminals with other devices including other FieldPoint devices unless those devices are isolated from human...

Страница 19: ...e noted 1 Input Characteristics Number of channels 12 8 count 4 gate Input type 10 30 VDC sinking compatible with most 12 and 24 VDC devices Maximum input voltage 30 VDC Input threshold level ON state...

Страница 20: ...1 oz cFP CTR 500 114 g 4 0 oz Power Requirements Power from network module 800 mW Isolation Voltage Channel to channel isolation No isolation between channels Transient overvoltage 2 300 Vrms Environm...

Страница 21: ...ms half sine 18 shocks at 6 orientations Safety This product is designed to meet the requirements of the following standards of safety for electrical equipment for measurement control and laboratory...

Страница 22: ...ef nsf Mechanical Dimensions Figure 13 shows the mechanical dimensions of the FP CTR 500 installed on a terminal base If you are using the cFP CTR 500 refer to your Compact FieldPoint controller user...

Страница 23: ...694 8521 Canada Toronto 905 785 0085 Canada Vancouver 514 685 7530 China 86 21 6555 7838 Czech Republic 420 2 2423 5774 Denmark 45 45 76 26 00 Finland 385 0 9 725 725 11 France 33 0 1 48 14 24 24 Germ...

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