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Potentiometer Input, Signal Conditioner AP4003-0001

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The AP4003-0001 is a wide-ranging, isolating signal conditioner for potentiometer inputs. The AP4003 is useful for converting potentiometer settings to a voltage or current, and in any applications where a potentiometer or slide wire is used to determine position, displacement or rotation. The constant-voltage excitation of the AP4003 allows use with potentiometers or slidewires with total resistances from 100 to 100k Ohms without effecting accuracy. The new AP4003-0001, wide-ranging unit is a single unit that can be calibrated to replace nearly all of the fixed-range models of the previous version.

Model AP4003-0001 is the new version of the previous AP4003 series. Wide-ranging technology from the Ultra Slimpak II series has been utilized in this new version. This single model contains all of the input capability of previous dash numbers without the need for custom ranging from the factory. The resistance range is still 100 to 100k ohms. The default range is 0 to 100% but any portion of the span from 10% to 100% can be selected by pushbutton ranging. Four output ranges (0-5VDC, 0-10VDC, 0-20mA and 4-20mA) are available. A 15VDC output can also be used, but at a reduced drive level of 3mA. The default output is 4-20mA.

Applications

The AP4003-0001 is useful for converting potentiometer settings to voltage or current. It can be used anywhere a potentiometer or slidewire is used to determine position, displacement or rotation. The constant-voltage excitation allows use with potentiometers/slidewires with total resistances from 100 ohms to 100k ohms without affecting accuracy. For additional information on calibration, operation and installation, contact our Technical Support Group.

Mounting

All Action Paks feature plug-in installation. The AP4003-0001 uses an 8-pin base, either the molded socket (M008) or the DIN rail socket (MD08). An optional retaining spring (M801) is available if required for the application.

AP4003

FEATURES:

  • Constant Voltage Excitation

  • 100 to 100K Ohm Potentiometers

  • Useful in Tank Level and Position Applications

  • Easy Plug-in Installation/Low Mean-Time- to-Repair

  • AC Line Powered , 120VAC (default)/ 240 VAC

MORE INFO:

Power Connections

See the pin connections at the back of this document. The unit supports either 115VAC input (the default) or 230VAC input. For 230VAC input, the jumpers next to the input transformer (on the base board) need to be changed according to the diagram below.

Diagnostic LEDS

Other than when executing the pushbutton calibration routine, the LEDs blink under the following conditions:

  • GREEN: 2Hz when the input is under range 8Hz when the input is over range.

  • RED: 2Hz when the output is under range 8 Hz when the output is over range.

An Under Range condition exists when the signal is lower than the operational low value minus 6.25% of the operational span. An Over Range condition exists when the signal is higher than the operational high value plus 6.25% of the operational span.

A voltage output short circuit may cause an under range condition (RED blinking at a 2Hz rate). A current output open circuit may cause an over range condition (RED blinking at an 8Hz rate). There could be two or more LEDs blinking at the same time. That means

the module has more then one error condition present. Only when all error conditions have been cleared will the LEDs be back to their normal condition (Green ON, Red and Yellow OFF).

Default Settings

Input Range: 0 to 100%

Output Range: 4 to 20mA

 

Ap4003
Calibration

For best results, calibration should be performed in the operating environment, allowing at least one hour warm-up for thermal stability of the system. If pre-calibration on a test bench is desired, then an output load equal to the input impedance of the devices connected to the AP4003-0001 output is recommended, along with the warm-up period.

Note: Many applications do not require calibrating the output levels and simply utilize the default operational ranges of the unit (0-5VDC, 0-10VDC, 0-20mA or 4-20mA). If the factory default calibration has been changed, the last saved operational output values are utilized. In those applications, the only calibration required is the operational input values. Once the maximum and minimum input values have been set, the Green and Red LEDs will be on. At this point, simply press the CAL button rapidly 3 times and you will exit the calibration routine without effecting the last saved calibration for the operational output values.

1. Connect a precision, multi-turn potentiometer of the required value to the input, with the CW lead connected to Pin 6, the Wiper lead to Pin 5 and the CCW lead to Pin 4. Connect the output to a voltage or current meter, depending on your application. Apply power and allow the system to reach thermal equilibrium.

2. Rotate the pot fully CW or to the desired maximum point and observe that the Green LED is on or flashing. Push the CAL button and hold for more than 4 seconds. The Yellow and Red LEDs should be on. Push the CAL button momentarily and the Yellow and Green LEDs will be on. (From this point on, you can exit the calibration procedure at any step without saving new data by holding the CAL button for at least 4 seconds.)

3. With the pot at the maximum input signal level desired, push the CAL button. The Yellow LED should now be on.

4. Rotate the pot to the full CCW position, or the exact minimum input signal level desired, then push the CAL button. The Green and Red LEDs should now be on. If you do not wish to change the output calibration, press the CAL button rapidly three times to exit the calibration routine.

5. If you do wish to do a custom operational range for the output, rotate the pot CW until the output is precisely at the desired maximum level (e.g. 20.00mA), then push the CAL button. The Red LED should be on.

6. Rotate the pot CCW until the output is precisely at the desired minimum level (e.g. 4.00mA), then push the CAL button. All three LEDs should now be on.

7. To finish calibration, push the button one final time. The calibration data is now saved. The Green LED should be on if the input is within the calibrated range.

 

Specifications

Input:

  • Impedance: >100M ohms

  • Linearity: ±0.1% of span, typical

  • Excitation: 300mV, nominal

  • Potentiometer Resistance: 100 ohms (min) to 100k ohms (max) (end to end)

  • Input Range: Any portion of the potentiometer from 10% to 100% using pushbutton calibration

  • Turn-Up/Turn-Down: 75% (90% of span @ 0.5% linearity; 80% of span @ 0.15% linearity)

 

Common Mode Rejection:

  • 60Hz: >100dB

  • DC: >120dB

 

Output Ranges:

  • 0-5VDC, 0-10VDC (higher voltage to 15V @ 3mA drive)

  • 0-20mA

  • 4-20mA

 

Response Time:

100mSec, typical

 

Stability:

±100ppm (±0.01%) of span/°C, typical

 

Output Ripple:

0.2% of span, or 5mVrms, whichever is greater

 

Output Impedance:

  • Voltage Output: <10 ohms

  • Current Output: >100k ohms

 

 

 

Output Drive:

  • Voltage Output: 10mA, max

  • Current Output: 20V compliance @20mA

 

LED Indication:

  • RUN (Green): On when unit is powered. Flashes at 2Hz when input is below operational low minus 6.25% of operational span. Flashes at 8Hz when input is above operational span plus 6.25% of operational span.

  • INPUT (Yellow): On while calibrating the input level.

  • OUTPUT (Red): On while calibrating the output level. Flashes at 2Hz when output is below opertional low minus 6.25% of operational span.Flashes at 8Hz when output is above operational span plus 6.25% of operational span.

 

Temperature Range:

  • Operating: 0 to 60°C (32 to 140°F)

  • Storage: -20 to 85°C (-4 to 185°F)

 

Humidity:

  • Operating: 15 to 95% RH non-condensing

  • Non-operating: 90% RH @ 65°C for 24 hrs

Power Consumption:

3W typical, 5W max

  • Standard: 115/230VAC ±10%

 

Isolation:

Input to Output Power: 1500VDC

 

Agency Approvals:

  • CSA C22.2, No. 0-M91, 142-M1987

  • UL508

Ordering Information

Specify:

1. Model: AP4003-0001

Accessories:

M801-0000 Retaining Spring

M008-A 8 pin Track Mount Socket

M004-0000 4 ft Long Channel Track

MD08-0000 8 pin DIN Mount Socket

 

Downloads

User Documentation (download requires registration)

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