Front and Left Side Views of the Triac

iCOM Control Training and Service Manual

The triacs that Liebert uses are standard in the industry and are rated at a 2-amp capacity. You can check these devices for proper operation while they are connected in the circuit. If the load is removed from the device, you can get a false reading from the meter. This is because the voltage potential is present and is detected by the meter. When the load is applied to the device, the potential is not detected by the meter. To test a triac for proper operation, energize the circuit and connect the load.

O

Front View

Heat Sink

Body Schematic Drawing for the Triac

Terminals

Left Side View

Front and Left Side Views of the Triac

As your view the triac from the front, the terminals are numbered as follows:

Terminal

Connection

Left

#2 Connects to the Load

Middle

#1 Connects to the Transformer power

Right

G(ate) Connects to the Opto-Isolator

Below is a simple schematic drawing for the triac using Liebert symbols.

24 VAC

Transformer

Power Triac

2

1

G

 

 

 

 

6

 

2

 

 

 

 

Opto

 

 

 

 

 

 

4

 

1

 

 

 

Load

Device

Schematic Drawing for the Triac

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Image 118
Liebert TM-10098 service manual iCOM Control Training and Service Manual, Front and Left Side Views of the Triac