SGD7S MP2600iec

Yaskawa motion systems use lithium batteries for mainly two different functions: maintaining Absolute encoder data and preserving CPU non-volatile memory.

The encoder battery used with the ServoPacks (JZSP-BA01) is required if a multi-turn absolute encoder is needed because it holds the multi-turn encoder data when the drive power is down. Therefore, when setting the drive to use the absolute encoder as an incremental encoder or a single-turn absolute encoder, the encoder battery is not needed.  The encoder battery power can be applied via the battery case on the ABS encoder cable (CN2), or through the I/O connector (CN1, for example Sigma7 ML-III ServoPack, pins 14[+] & 15[-]).

Figure1

When using an absolute encoder without the encoder battery case, the battery can be connected to through CN1 connector on the ServoPack:

Figure2

Figure3

The Absolute Encoder Current Draw specification is:

• 20 μA when ServoPack is powered off
• 3 μA when ServoPack is powered on (w/o diode in place)

To determine the worst case battery life, divide the A-hour rating of the battery by the Sum of the current of all encoders when powered off.

For example, assume 16.5 A-hr battery and 16 Encoders are connected: 16.5 A-hr / (.000020 A * 16) = 51500 hours or 5.8 years

For installing and replacing the battery in the ServoPack, refer to:

• YASKAWA SIGMA-7 AC Servo Drives and Motors Technical Supplement (YAI-KAEPS80000123F)
• YASKAWA AC Servo Drives Sigma-V Series Product Catalog (YEA-KAEPS80000042)

The other type of batteries is used for the MP controllers. These batteries (JZSP-BA01) provide a backup power for the CPU non-volatile memory, preserving the SRAM data when CPU power is down. This data includes the retained variables, the alarm history, the absolute encoder offset and the real-time clock data. The SRAM can last for one hour without the battery connected. This battery must be replaced while power is supplied, within 2 weeks of when the BAT indicator first lights. For the MP2600, the SRAM battery power can be applied through the battery connector (CN14), or through the I/O connector (CN13 pins 7[+] & 32[-]).

Figure4 

For installing and replacing the battery in the CPU, refer to:

• YASKAWA MP3200iec Machine Controller Hardware Manual (YAI-SIA-IEC-5)
• YASKAWA MP2600iec Hardware Manual (YEA-SIA-IEC-6)

More references on the encoder usage in Yaskawa motion systems:

• The absolute encoder battery back-up techniques
• Material Safety Data Sheet (MSDS) for Toshiba ER3V and ER6V batteries
• A.810 Absolute Encoder Battery Life and Replacement
• MP940 Dip switch settings, battery and PC cable

See attached document.

Pn001 must be set.  See attached document for details.

The color code documentation can be found in the Sigma-5 Series Product Catalog (YEA-KAEPS80000042) or the Sigma-7 Peripheral Device Selection Manual (SIEPS80000132).

The attached PDF has an image of the color code for the cable as shown in the Sigma-5 Series Product Catalog. 

California Proposition 65 is a standalone program that affects commercial goods sold in the state of CA.  This was enacted in 1986 as "The safe Drinking Water and Toxic Enforcement Act of 1986".  Businesses, including manufacturers, producers, packagers, importers, suppliers and distributors, are required to provide warnings required under the California Code of Regulations (the “Code”) if their products or facilities can expose consumers or workers to a listed chemical above identified threshold levels, known to the state of California to cause cancer or reproductive harm.  The chemical list contains more than 900 substances, and this list is updated every year. 

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The attached PDF.

Please see attached document for details.

No. See attached document for futher details.

Position error is the difference between the position reference value and the actual position.

Position amplifier error is the difference between the position reference value and the actual position after electronic gear conversion.

Motor-load position error is the difference between the feedback position of the motor encoder and the feedback load position of the external encoder for fully-closed loop control.

See attachement for more details.

The answer depends on the usage of the system.  Please see attached document for details.

Yes. The Sigma-7 SERVOPACK has added a new setting for Pn002.2 (Absolute Encoder Usage). Pn002.2 = 2 (Uses absolute encoder as an absolute encoder for a single rotation).