A-T Controls TRIAC TDC-100B Manuale di installazione e funzionamento - Pagina 14

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PROBLEM

No response from unit

(All lights are off)

No response from unit, and no response from

adjust (▲ and ▼) or MODE buttons.

(MANUAL/FB POT CAL light is lit solid)

Actuator rotates valve backwards

Actuator does not respond to input signal (all

FAULT indicators off).

Motor 1 or 2 No Motion (Stall) FAULT indicators

flash after actuator reaches fully closed or open

position.

AUX CLOSE OUTPUT or AUX OPEN OUTPUT

indicators flash.

If an OTR-100 or OTR-101 option module is not

installed, no remedy is required.

Actuator hunts for position.

Triac output failure

(Motor buzzes and overheats).

Perform appropriate remedy, then replace the

unit.

A-T Controls product, when properly selected, is designed to perform its intended function safely during its useful life. However, the purchaser or user of A-T Controls products

should be aware that A-T Controls products might be used in numerous applications under a wide variety of industrial service conditions. Although A-T Controls can provide

general guidelines, it cannot provide specific data and warnings for all possible applications. The purchaser / user must therefore assume the ultimate responsibility for the

proper sizing and selection, installation, operation, and maintenance of A-T Controls products. The user should read and understand the installation operation maintenance

(IOM) instructions included with the product and train its employees and contractors in the safe use of A-T Controls products in connection with the specific application.

While the information and specifications contained in this literature are believed to be accurate, they are supplied for informative purposes only. Because A-T Controls is

continually improving and upgrading its product design, the specifications, dimensions and information contained in this literature are subject to change without notice. Should

any question arise concerning these specifications, the purchaser/user should contact A-T Controls.

For product specifications go to

http://download.a-tcontrols.com/

A-T Controls, Inc. • 9955 International Boulevard, Cincinnati, OH 45246 • Phone: (513) 530-5175 • Fax: (513) 247-5462 •

www.atcontrols.com



TROUBLESHOOTING

POSSIBLE CAUSES

No power.

Excessive voltage applied to unit.

Blown or missing fuse.

Jumper wire on J7 terminal block is missing.

Auto/Manual station is improperly wired.

Actuator or valve is mounted incorrectly on

coupling.

Actuator needs to be reverse acting.

Closed and open positions are set to the same

position.

Closed or open limit switches set inside the

operating range.

Torque switches trip due to mechanical end

stops set inside the operating range.

Actuator position is near close or open.

Sloppy gear tooth engagement.

No motor brake or brake slipping.

Unstable command input signal from PID

control loop.

Exposure to water from conduit entrance.

Exposure to water from unsealed actuator

housing.

Exposure to moisture from condensate.

Corrosion from exposure to salts or acids.

External power applied to motor connections as

J1-1 or J1-3.

Motor capacitor is defective or has incorrect

voltage rating.

Lightning or power surge.

TDC-100 Series

AC Digital High-Resolution Controller

Installation & Maintenance Manual

REMEDIES

Check power source.

Replace unit.

Replace with appropriate fuse; see

"Specifications in manual.

Install jumper wire on J7 terminal block.

Check wiring on Auto/Manual station; see

"Override Mode" in manual.

Remount actuator as necessary.

Refer to "Close" and "Open" modes in manual.

Set close and open settings; refer to "Close"

and "Open" modes in manual.

Adjust limit switch cams; refer to "Close" and

"Open" modes in manual.

Adjust mechanical end stops; refer to "Close"

and "Open" modes in manual.

If and OTR-100 or OTR-101 option module is

installed, set Aux Close and Aux Open

positions; refer to "Aux Close Output" and "Aux

Open Output" modes in manual.

Adjust feedback potentiometer gears for tight

engagement.

Install or repair motor brake.

Adjust PID parameters for stable command

signal.

Install drip loop at conduit entrance.

Inspect and/or replace actuator housing gasket;

use actuator with proper sealing.

Use heater and thermostat and/or desicant

packets.

Use corrosion inhibitors and desicant packets.

Remove connector J1 prior to applying external

power.

Replace motor capacitor.

Replace unit.

www.atcontrols.com

IOM08032 REVISION 01

07/24/20