h. Troubleshooting Flowchart - Quick Reference...

Is power available to primary?

First Visual Check

No Spark And System Does Not Work

Is 24 VAC available

 

 

 

 

at transformer?

 

 

 

 

Is 24 VAC present from terminal

 

 

 

 

No

Yes

 

 

 

 

THS2 to ground?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

Yes

No

Yes

 

 

 

Determine why voltage is not present.

Replace

Transformer.

 

 

 

 

Are thermostat contacts and

 

 

 

 

limit control contacts closed?

Close

 

 

 

 

 

Contacts.

 

 

 

No

Yes

 

 

 

 

 

 

 

 

 

Check continuity of wiring to determine why voltage does not exist at THS2.

Is jumper installed from terminal 5 to ground?

Install

 

 

No

Yes

Jumper.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Open thermostat contacts for 30 seconds.

Close contacts and wait for prepurge (if applicable)

period. Is spark present now?

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Turn off supply voltage.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check high voltage cable.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is it securely attached to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

spark transformer?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is condition of high voltage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

cable good (not brittle,

 

 

 

 

No

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

burnt, or cracked)?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Correct

 

 

 

 

 

 

 

 

 

 

No

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is spark electrode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ceramic cracked

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

or is electrode

 

 

 

 

 

 

 

Replace

 

 

 

 

 

 

 

grounded out?

 

 

 

 

 

 

 

Johnson Control

 

 

 

 

No

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

module G760/761

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace electrode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

assembly.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

System was in lockout. Observe a complete operating cycle to determine why control locked out.

18

Page 22
Image 22
ADC AD-200 service manual First Visual Check

AD-200 specifications

The ADC AD-200 is a high-performance analog-to-digital converter designed to meet the needs of a wide range of applications including industrial automation, instrumentation, medical devices, and consumer electronics. This converter is renowned for its combination of speed, precision, and reliability.

One of the standout features of the ADC AD-200 is its exceptional resolution. Offering up to 24 bits of resolution, it provides an outstanding level of detail and accuracy in signal conversion. This high resolution makes it ideal for applications where precision is paramount, such as in audio processing and sensitive measurements in scientific research.

The AD-200 operates at a maximum sampling rate of 1 Msps (mega-samples per second), allowing it to effectively capture fast-changing signals. This speed ensures that the converter can handle dynamic input signals without missing critical data points. Additionally, the device employs a pipelined architecture, which helps to maintain high throughput while keeping latency low—an essential characteristic for real-time applications.

Another critical aspect of the AD-200 is its low input noise and distortion levels. With a total harmonic distortion (THD) of less than 0.01%, the converter maintains signal integrity even when processing high-frequency signals. This feature is crucial in audio and instrumentation applications where signal clarity and fidelity are necessary.

The ADC AD-200 is equipped with advanced digital signal processing (DSP) capabilities, allowing users to perform filtering, averaging, and other signal conditioning tasks on the incoming data stream. This built-in processing capability means users can reduce the load on external processors, streamlining system designs and improving overall efficiency.

The device supports various input voltage ranges, which makes it versatile for multiple applications. It is compatible with single-ended and differential input configurations, providing flexibility for different circuit designs and requirements.

Connectivity features include both serial and parallel interfaces, offering easy integration into various systems. The ADC also comes with a robust software development kit (SDK) that provides necessary drivers and support to facilitate quicker implementation and system optimization.

In summary, the ADC AD-200 is a versatile, high-performance analog-to-digital converter marked by its high resolution, fast sampling rate, low noise levels, integrated DSP capabilities, and flexible connectivity options. These features make it a preferred choice for engineers and developers aiming for excellence in signal processing tasks across diverse industries.