A-T Controls TRIAC TDC-100B Panduan Pemasangan & Pengoperasian - Halaman 4

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POWER / SIGNAL (J2)

Power is connected to pins 1, 2, and 3 as shown in the

block diagram. The fuse installed on the unit is rated for

maximum output current that can be safely delivered by

the AC outputs. Replacement fuses must not exceed the

maximum rating to prevent damage to the unit. Smaller

fuse sizes can be used with smaller motors - consult the

actuator manufacturer for appropriate fuse size and type.

An appropriate command signal, either 0-5V, 0-10V, 1-

5V, 2-10V, or 4-20mA, should be connected to pin 5 or 6

(as shown in the Block Diagram) while using pin 4 as the

return signal ground. The TDC-100 must be configured

for the type of command signal that is to be used (see

COMMAND TYPE).

Pin 7 of J2 provides an auxiliary +5V output which can be

used to connect a command potentiometer.

connecting one end of a potentiometer to pin 7, the other

end to pin 4, and the wiper to pin 6, a local control knob

can be implemented. Pin 8 provides an auxiliary +15VDC

output which can be used to power an input or output 4-

20mA transmitter.

ACTUATOR (J1)

The actuator motor and feedback potentiometer are

connected to J1 as shown in the Block Diagram. The

Motor Neutral wire must be connected to pin 2, while one

motor winding is connected to pin 1 and the other winding

to pin 3. The feedback potentiometer wiper must be

connected to pin 5, while one end is connected to pin 4

and the other end to pin 6.

feature of the TDC-100 automatically determines which

motor winding to control based on where the open and

closed positions are set; this feature also eliminates the

need to rewire the unit for direct or reverse acting

applications.

When the ▲ and ▼ buttons are used to control the

actuator, the ▲ button will turn on the motor winding

connected to pin 1, while the ▼ button will turn on the

motor winding connected to pin 3. See MANUAL/FB POT

CAL for more details.

OVERRIDE (J7)

J7 provides a simple 2-wire connection that can override

the TDC-100 to perform a variety of external control

functions.

Using an appropriate interface module,

commonly used auto/manual station switches are easily

implemented with low voltage/low current switches. See

Special Applications for more details.

installed jumper between pins 1 and 2 enables normal

www.atcontrols.com



The Polarity Detection

The factory

operation of the TDC-100 and must be installed if the

external override functions are not used.

MODE

The MODE button is used to select the desired function

of operation. When the MODE button is pressed, the unit

will switch to the next function and the appropriate LED

indicator will turn on to let the user know which function is

selected. Except for the MANUAL/FB POT CAL mode,

the associated mode indicator will be steady on; for some

of the modes other indicators will flash to indicate specific

settings associated with the mode. Each of the modes

are described in more detail in the following sections.

If a 0-5V or 0-10V command signal is used, the LOSS OF

COMMAND function cannot be used. The MODE button

will skip over the LOSS OF COMMAND mode when the

unit is configured for a 0-5V or 0-10V command signal

(see COMMAND TYPE). When the OVERRIDE mode is

enabled (see OVERRIDE MODE), the MODE button is

disabled and the Manual/Pot Cal indicator will turn on

steady.

ADJUST UP (▲) and ADJUST DOWN (▼)

The adjust up (▲) and adjust down (▼) buttons are used

to adjust the setting of any given function.

function is selected by the MODE button, the adjust

buttons will affect that function only. Note, that the AUTO

mode does not have any adjustable settings, and

therefore, the adjust up (▲) and adjust down (▼) buttons

have no effect. Also, the adjust buttons are disabled in

the OVERRIDE mode.

OVERRIDE MODE

The OVERRIDE mode is not selected by the MODE

button and can be enabled at anytime by connecting a

resistance greater than 250 ohms to the Override Input

(J7 pin 1 and pin 2). While the OVERRIDE mode is

enabled, the MODE button and adjust buttons are

disabled, and the Manual/Pot Cal indicator will turn on

steady to indicate that the unit is being controlled by the

Override Input. Shorting J7 pin 1 to pin 2 returns the unit

to normal operation and the previously selected mode.

Note that earlier models may not have connector J7, and

therefore do not have the OVERRIDE mode feature.

Controlling the TDC-100 from the Override Input is

accomplished by connecting a specific resistance to

select a specific operation. The table below defines the

operations and their associated resistance. See Special

TDC-100 Series

AC Digital High-Resolution Controller

Installation & Maintenance Manual

IOM08032 REVISION 01

When a

07/24/20