A-T Controls TRIAC TDC-100B Handbuch für Installation und Betrieb - Seite 7

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POSITION OUT CAL

The POSITION OUT CAL function is used to calibrate an

optional feedback transmitter output. An appropriate

transmitter option module is required to use this feature.

When the POSITION OUT CAL function is first selected

(by pressing the MODE button while in the LOSS OF

COMMAND function), the CLOSE indicator will flash, and

the voltage or current associated with the closed position

will appear at the option module output. If desired, the

output can be adjusted (using the adjust buttons) to any

value from 0 to 10V (for a voltage output) or 4 to 20mA

(for a current output). The new setting is saved when the

MODE button is pressed.

Pressing the MODE button again will leave the unit in the

POSITION OUT CAL function except that the OPEN

indicator will flash, and the output voltage or current

associated with the open position will appear at the option

module output. Like the closed setting, the output can be

adjusted to any voltage (from 0 to 10V) or current (from 4

to 20mA), and the new setting is then associated with the

open position.

FAULT INDICATORS

The TDC-100 detects various fault conditions that

prohibit the unit from controlling the actuator.

combination of the three Fault indicators (red, yellow, and

green) will turn on or flash to indicate a specific detected

fault. If an appropriate relay option module is installed, the

Fault relay output on the option module will also turn off

(indicating a fault) when any of the Fault indicators turn on

or flash. A communications option module can read the

specific condition(s) causing the fault. Note that a fault

condition DOES NOT disable the motor outputs when

manually controlling the actuator with the adjust buttons;

while useful for troubleshooting, care should be exercised

when operating the motor under a fault condition. The

OVERRIDE mode can also operate the motor when a

fault condition exists - see OVERRIDE MODE for details.

Note that the indicators may not indicate all the fault

conditions that may exist. This means that when the

indicated fault is corrected, the unit may display another

fault that has not been corrected. The following table

provides a summary of the Fault indicators which is

followed by a description of each fault.

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

RED

YEL

Flash

OFF

Flash

OFF

Flash

OFF

Flash

OFF

Motor 1 No Motion (Stall) - A fault condition is detected

when no actuator motion is detected while the Motor 1

output is turned on. The fault condition will disable the

Motor 1 output only, and the fault is cleared when the

TDC-100 detects a motion greater than 1.5 in either

direction. The fault can be cleared if 1) the command

signal commands a Motor 2 operation, 2) manual

operation with the adjust buttons results in a motion

greater than 1.5, or 3) a mechanical manual override

forces the 1.5 motion, provided the mechanical motion is

monitored by the feedback pot.

Motor 2 No Motion (Stall) - A fault is detected when no

actuator motion is detected while the Motor 2 output is

turned on. The fault can be cleared in the same manner

as a Motor 1 Stall (see above).

Double No Motion (Stall) - If the TDC-100 detects no

actuator motion in either direction, both motor outputs will

be disabled.

condition; only manual operation or a mechanical override

can clear the fault. Alternatively, the TDC-100 can be

powered off and then on to temporarily clear the fault;

however, this practice should be avoided without

permanently correcting the cause of such a fault.

Feedback Alarm - A fault condition is detected whenever

the feedback signal is out of range (that is, less than 5%

of the potentiometer value or more than 95% of the

potentiometer value), or when any of the potentiometer

connections are broken. Normal operation resumes when

the potentiometer is reconnected or back in range.

Loss of Command - If the command signal is

disconnected, the fault indicator will remain on until the

signal is reconnected. See LOSS OF COMMAND for

details.

Command Out of Range – If the command signal goes

out of range, the fault indication will remain on until the

signal is back in range. See LOSS OF COMMAND for

details.

AC Digital High-Resolution Controller

Installation & Maintenance Manual

GRN

FAULT

OFF

Motor 1 No Motion (Stall)

Flash

Motor 2 No Motion (Stall)

Flash

Double No Motion (Stall)

Flash

Feedback Alarm

OFF

Loss of Command

OFF

Command Out of Range

Feedback Alarm and

Flash

Loss of Command

Feedback Alarm and

Flash

Command Out of Range

The command signal cannot clear this

IOM08032 REVISION 01

TDC-100 Series

07/24/20