FAQ: What is the difference between the I/O on the Sigma II and the MP940? Do both need to be used?
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There is a difference between the two I/O ports and in most cases both will be used, and is recommended. The Sigma II I/O (CN1 connector) is mostly dedicated I/O with some user defined I/O. The MP940 (I/O connector) is all user defined. Below is an explanation of the inputs and outputs for each device:
I/O (MP940):
- 8 digital inputs (programmable, isolated 24VDC)
- 1 high speed latch input (for external encoder position latching), DC Voltage: 24, 12, or 5 VDC
- 1 external encoder input (must be 5 VDC)
- 8 digital outputs (programmable, isolated 24VDC)
- 1 Analog Output (+/- 10.75VDC, 16-bit resolution, 328uV/bit)
CN1 (Servopack):
- 4 digital inputs (programmable, isolated 24VDC)
- 1 high speed latch input (for motor encoder position latching, can be used as programmable input if latch is not necessary, 24VDC)
- 2 overtravel inputs (can be used as programmable inputs if overtravel switches are not necessary, 24VDC)
- 1 analog input (+/- 12VDC, 16-bit resolution)
- 3 digital alarm code outputs (open collector)
- 1 digital servo alarm output (This output will only indicate Servopack alarms, some MP940 alarms will not activate this output.)
- 3 digital semi-programmable outputs (These can be configured for various functions which the Servopack activates. For example, one of these must be used to control the brake if a servomotor with a brake is used. 24VDC)
- 1 motor encoder output
If the system requires I/O from both the MP940 and the Servopack than two breakout cables will be needed. Yaskawa recommends using the standardized I/O (such as Overtravel, SON, and Brake Control) to maintain consistency and system robustness.
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Please read and understand the product instruction manual before installing, servicing or operating Yaskawa products. FAQ content and illustrations are provided as technical advice to augment the information in manual, not supersede it. It is not possible to give detailed instructions for all types of installation or support activities. The information described in the FAQs are subject to change without notice to improve the product or FAQ. Yaskawa assumes no responsibility for errors or omissions or damages resulting from the use of the information contained in any FAQ. All warnings, cautions and product instruction for product use must be followed. Installation, operation and maintenance should be carried out by qualified personnel. Failure to observe these and other precautions highlighted in the product manuals will expose the user to high voltages resulting in, serious injury or death. Qualified personnel are defined as individuals who are familiar with the installation, starting, operation and maintenance of Yaskawa products of the type described and have proper qualifications to perform the work.
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Waukegan, IL 60085