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Frequently Asked Questions

 

AIC 801 Micro-Based 1/8 DIN Controller

What outputs does the 801 Loop Controller provide?

4-20 mA
This current output signal varies in accordance with the PID tuning of the unit. It is a self powered (24VDC) output. Wired directly to I:P Transducers for Pneumatic Control of Valves, or directly to Variable Frequency Drive Controllers for motor speed control.

2 AMP Mechanical Relay
No power is provided - dry contact closure only. Selectable for Above Setpoint or Below Setpoint action. Field settable setpoint.

What are the different models available?

Model number on sticker - located on instrument case.

Model starts "8011":
-- Factory configured for 100 ohm RTD input
-- NO onboard power supply
-- mA output for PID controller out signal (self powered)
-- One 2 AMP mechanical relay for alarm function
-- Field configurable for mA input, but lacks internal power supply

Model starts "8014":
-- Factory configured for mA input
-- WITH onboard 24 VDC loop power supply
-- mA output for PID controller out signal (self powered)
-- One 2 AMP mechanical relay for alarm functions
-- Field configurable for 100 ohm RTD input

Can I re-configure from RTD to mA input or mA to RTD input?

Yes - instruction are provided on Technical Bulletin 1003 - Click to See. NOTE: If you have a model "8011", this unit does NOT have an on-board loop power supply. You will need to provide an external supply to power the input transmitter. Follow the correct wiring on the above Technical Bulletin.

Can you provide tuning parameters for my process?

Yes and No - although every process varies, the following parameters are a good starting point.

Tune Menu of Controller:
Page 28 of Manual - Step 7 - PB1: Enter 20
Page 28 of Manual - Step 9 - ArSt: Enter .15
Page 28 of Manual - Step 12 - rSEt: Enter 2

PB1 - Functions to gain stability
ArSt - Functions to drive system to setpoint
rSEt - Functions as offset (+/-) that is always present

These values will provide a good starting point. Increase or decrease PB1 if the process values is not stable. Increase (by small amounts) ArSt if you cannot achieve setpoint. Increase (by small amounts) rSEt if adjusting previous parameters gets you close, but you need a little more to make setpoint.

Can I get two 4 - 20 mA outputs from this controller?

No. Only output one can be setup for 4 - 20 mA. For more than one 4 - 20 mA output , refer to the 1/4 din units in our product line.

 


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Anderson Instrument Company Inc.
156 Auriesville Road
Fultonville, NY 12072
Phone: 518-922-5315
Fax: 518-922-8997
info@andinst.com