Voltage Sensing, Table A.1 | Lincoln Electric IM917-A specs

A-4	INSTALLATION	A-4

VOLTAGE SENSING

The best arc performance occurs when the PowerWaves have accurate data about the arc condi- tions. Depending upon the process, inductance within the electrode and work lead cables can influence the voltage apparent at the studs of the welder. Voltage sense leads improve the accuracy of the arc condi- tions and can have a dramatic effect on performance. Sense Lead Kits (K940-10, -25 or -50) are available for this purpose.

CAUTION

If the voltage sensing is enabled but the sense leads are missing, improperly connected, or if the electrode polarity switch is improperly configured, extremely high welding outputs may occur.

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The ELECTRODE sense lead (67) is built into the control cable, and is automatically enabled for all semi-automatic processes. The WORK sense lead

(21)connects to the POWER WAVE® at the four pin connector. By default the WORK voltage is monitored at the output stud in the POWER WAVE® 405M. For more information on the WORK sense lead (21), see "Work Voltage Sensing” in the following paragraph.

Enable the voltage sense leads as follows:

TABLE A.1

Process	Electrode Voltage	Work Voltage
	Sensing 67 lead *	Sensing 21 lead
GMAW	67 lead required	21 lead optional
GMAW-P	67 lead required	21 lead optional
FCAW	67 lead required	21 lead optional
GTAW	Voltage sense at studs	Voltage sense at studs
GMAW	Voltage sense at studs	Voltage sense at studs
SAW	67 lead required	21 lead optional
CAC-C	Voltage sense at studs	Voltage sense at studs

*The electrode voltage 67 sense lead is integral to the control cable to the wire feeder.

Work Voltage Sensing

The standard POWER WAVE® 405M’s default to the work stud (work sense lead disabled)

For processes requiring work voltage sensing, con- nect the (21) work voltage sense lead (K940) from the POWER WAVE® work sense lead receptacle to the work piece. Attach the sense lead to the work piece as close to the weld as practical, but not in the return current path. Enable the work voltage sensing in the POWER WAVE®. (See Dip Switch Settings and Locations in Installation Section of this manual.)

ELECTRODE VOLTAGE SENSING

Enabling or disabling electrode voltage sensing is automatically configured through software. The 67 electrode sense lead is internal to the cable to the wire feeder and always connected when a wire feeder is present.

CAUTION

Important: The electrode polarity must be config- ured at the feed head for all semi-automatic processes. Failure to do so may result in extreme- ly high welding outputs.

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POWER WAVE® 405M

IM917-A specifications

The Lincoln Electric IM917-A is a highly advanced welding machine that caters to the needs of industrial and commercial applications. Designed for both expert welders and those new to the craft, this machine offers a rich combination of features and technologies that enhance performance and usability.

One of the standout features of the IM917-A is its robust inverter technology. This innovation allows the machine to provide consistent arc stability and improved control, even at low amperages. This means welders can achieve precision results in various materials, including carbon steel, stainless steel, and aluminum, without the risk of burn-through or warping. Additionally, the inverter design contributes to the IM917-A’s lightweight profile, making it portable and easy to transport to job sites.

The IM917-A employs advanced digital control systems that allow for precise adjustments and monitoring. Welders can access various pre-set programs tailored for different welding processes, significantly speeding up setup times. The intuitive user interface ensures that operators can quickly navigate through settings, achieving optimal parameters for each specific task. This ease of use makes the IM917-A accessible to less experienced welders while meeting the demands of seasoned professionals.

Another noteworthy characteristic of the IM917-A is its versatility. It supports multiple welding processes, including MIG, TIG, Stick, and flux-cored welding. This multi-process capability makes it an ideal machine for workshops looking to maximize their productivity without investing in multiple units. The ability to switch between these processes seamlessly allows users to adapt to various project requirements swiftly.

Safety is prioritized in the design of the IM917-A. It is equipped with features such as over-temperature protection and automatic shutoff, ensuring safe operation during prolonged use. Additionally, its durable construction and high-quality components enhance its reliability and longevity, making it a wise investment for businesses.

In conclusion, the Lincoln Electric IM917-A is a formidable choice for welders of all skill levels. Its combination of advanced inverter technology, user-friendly digital controls, versatile welding processes, and essential safety features sets it apart in the competitive welding equipment market. Whether for commercial, industrial, or even artistic applications, the IM917-A promises to deliver excellent performance and reliable results.

Lincoln Electric IM917-A manual Table A.1, Work Voltage Sensing, Electrode Voltage Sensing

Models: IM917-A

INSTALLATION