6-2. Diagnostics

1 Wrapper

2 Motor Control Board PC1

3 LED3

4 P2

2

3

1

4

Front panel is shown removed for purpose of illustration only. In actual use, front panel would be in place.

Ref. 802 687/803 154

Display On

LED3 Sequence On

 

 

Meter

 

 

Motor Control Board PC1

Indicated Error

(If Equipped)

 

 

 

 

 

 

 

 

 

HELP 11

1

Blink

Communication Error

 

HELP 12

2

Blinks

Trigger Error

 

 

 

 

 

HELP 13

3

Blinks

Tach Error

 

HELP 14

*4 Blinks

Motor Error

*Since blink On time and blink Off time are equal in a four-blink cycle, the four−blink sequence appears as constant blinking.

•Error Indications

Error conditions are indicated by LED3 on PC1 or on display (on models with meters). To view LED3, turn Off unit, remove wrapper, and turn unit On. LED3 is most easily observed from the left side of the unit.

The LED blinks in a 2.5 second cycle. The number of blinks in this period indicates the type of error.

The priority of the errors is related to the num- ber of blinks indicating the error. The more blinks, the more severe the error (motor error is top priority). A higher priority error overrides

a lower one (if a motor error and a communica- tion error existed, the light would blink four times for the motor error).

•The communication error occurs 2.5 sec- onds after a loss of communication between the motor and the optional meter board. The user may continue to weld with this error. The error may be cleared by turning power Off, waiting a minimum of two seconds, and turning power On.

•The trigger error occurs if the user has the trigger held for more than two minutes with- out striking an arc (providing current over- ride is not enabled), or if the user holds the

trigger past the postflow phase in a timed weld. This error also occurs if the trigger is held when the feeder is powered up. The er- ror may be cleared by releasing the trigger.

•The tach error occurs 2 seconds after the loss of tachometer feedback. The user may continue to weld with this error. The motor speed is regulated through the monitoring of voltage and current.

•The motor error indicates that the motor has been drawing too much current for too long. To remedy this, reduce the wire feed speed or the wire feeder torque load/duty cycle.

OM-1500−11 Page 20

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Miller Electric SS-74D12, SS-74S12, SS-74S16, and SS-74D16 manual Diagnostics, Indicated Error, Error Indications
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SS-74D12, SS-74S16, and SS-74D16, SS-74S12 specifications

Miller Electric has long been a leader in the field of welding equipment, and their range of gas-powered engine-driven welding machines showcases innovative technology designed for efficiency, reliability, and versatility. Among these products, the Miller SS-74S12, SS-74D16, SS-74S16, and SS-74D12 models stand out, providing robust solutions tailored for a variety of welding applications.

The SS-74S12 is a standout model, known for its smooth operation and user-friendly interface. At the heart of this machine lies a powerful engine that delivers consistent performance, making it ideal for remote job sites where access to power may be limited. The SS-74S12 features advanced inverter technology, ensuring optimal energy consumption without sacrificing welding quality. Its lightweight design enhances portability, allowing for convenient transport across different work sites.

Next in the lineup is the SS-74D16, which caters to users who require increased versatility. This machine incorporates dual-voltage capabilities, enabling it to operate effectively with either 120V or 240V power sources. This flexibility makes it a prime choice for contractors who frequently switch between residential and industrial projects. Additionally, the SS-74D16 is equipped with a digital display, providing real-time feedback on welding parameters, which improves user experience and accuracy.

The SS-74S16 model brings similar features to the table but with a focus on increased duty cycle. This characteristic is particularly advantageous for those engaged in heavy-duty fabrication work where extended periods of operation are commonplace. The enhanced cooling system ensures that the machine remains operational without overheating, allowing for longer, uninterrupted work sessions.

Finally, the SS-74D12 model is tailored for users who prioritize compact designs without compromising performance. This model combines the advantages of the other machines in a space-saving format, making it an excellent choice for workshops or job sites with limited space. The SS-74D12 also emphasizes fuel efficiency, allowing for lower operating costs over time, which is critical for businesses working with budget constraints.

Together, these models from Miller Electric represent a blend of advanced technology and practical features that cater to the needs of modern welders. Whether requiring mobility, versatility, durability, or compactness, users can find a model that fits their specific welding requirements, all while upholding Miller Electric’s reputation for quality and performance in the industry.
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