Operating Specifications When Using An Mp3000 Controller That Does Not Support The Σ-7-Series Servopacks - YASKAWA SVC User Manual

6.8.7 Operating Specifications When Using an MP3000 Controller That Does Not Support the Σ-7-series SERVOPACKs
6.8.7 Operating Specifications When Using an MP3000 Con-
troller That Does Not Support the Σ-7-series SERVO-
PACKs
You can connect an MP3000 that does not support Σ-7-series SERVOPACKs to a Σ-7-series
SERVOPACK and still control the SERVOPACK, but the following restrictions will apply.
You must set the electronic gear ratio in the Σ-7-series SERVOPACK to 16:1 (Pn20E = 16
1.
and Pn210 = 1) to use a reference resolution equivalent to a 20-bit encoder.
If you manually assign the link, you must assign the link according to the model of the Σ-
2.
7-series SERVOPACK that is connected.
3.
Because a reference resolution equivalent to a 20-bit encoder is used, you must set
fixed parameter No. 36 (Number of Pulses Per Motor Rotation) as follows:
Number of pulses per motor rotation: 1,048,576 (20 bits)
4.
If you execute self-configuration, the link assignment is set automatically according to
the model of the connected Σ-7-series SERVOPACK.
However, the electronic gear ratio of the SERVOPACK will be automatically set to 1:1, so
you must reset items 1 and 3, above.
5.
If you use an absolute encoder, you cannot use the infinite-length setting. Doing so will
cause the position to be offset when the power supply is turned ON.
6.
The range that you can move with one motion command for which a target position is
specified (POSING, EX_POSING, and STEP) is restricted to the following range (MP3000
reference units is converted to server reference units).
-2,147,483,648 to 2,147,483,647 Servo reference units
7.
The maximum setting of the deceleration time for positioning motion commands (POS-
ING, EX_POSING, ZRET, FEED, STEP, and EX_FEED) will be as given in the following
table.
Reference Speed [min
6,000
3,000
1,500
750
8.
The maximum travel distances that can be used for OL42 (Zero Point Return
Travel Distance), which is used for ZRET (Zero Point Return), and OL46 (External
Positioning Final Travel Distance), which is used for EX_POSING (Latch Target Position-
ing) and EX_FEED (Jog Mode with External Positioning), are given in the following table.
Electronic Gear Ratio
16:1 (equivalent to 20 bits)
-1
] Maximum Deceleration Time [s]
4.09
8.19
16.38
32.76
Negative Direction
-1,023.99 rotations
6.8 Precautions When Using Σ-7-series SERVOPACKs
Positive Direction
1,023.99 rotations
6
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