Iai-america XSEL-QX Manuel d'utilisateur télécharger pdf (Page 448)

424

Appendix

 Number of Regenerative Units to be Connected

Regenerative energy produced when a linear movement axis decelerates to a stop or moves downward in

a vertical installation is absorbed by means of the capacitor and resistor in the controller. If the produced

regenerative energy is not fully absorbed internally, an overvoltage error will occur and the controller

cannot operate any more. The specific error that will generate in this condition is “Error No. 60C, Power-

system overheat error.”

Should this error occur, the following measures must be taken:

x Connect an external regenerative unit or units. (Refer to the table below “Guide for Determining

Number of Regenerative Units to be Connected”).

x Increase the cycle time.

x Decrease the speed.

x Shorten the travel distance (in a vertical installation).

x Reduce the load capacity.

x Do not perform synchronous operation (when multiple axes are connected).

An axis produces regenerative energy when it decelerates to a stop in a horizontal installation, or

mainly when it moves downward in a vertical installation. When two or more axes are connected,

therefore, regenerative energy can be reduced by making sure the axes are operated in a manner

not performing the above operations at the same time.

Guide for Determining Number of Regenerative Units to be Connected

SCARA axes (high-speed models)

Type Number of external regenerative unit(s)

IX-NNN2515H/3515H, IX-NNW2515H/3515H,

TNN (UNN) 3015H/3515H, IX-NNC2515H/3515H

IX-NNN50H/60H, IX-NNW50H/60H,

IX-HNN (INN) 50H/60H, IX-NNC50H/60H

IX-NNN70H/80H, IX-NNW70H/80H,

IX-HNN (INN) 70H/80H, IX-NNC70H/80H

IX-NSN5016/6016 3

SCARA axes (conventional models)

Type Number of external regenerative unit(s)

IX-NNN1205/1505/1805, IX-NNC1205/1505/1805 0

IX-NNN2515/3515, IX-NNW2515/3515, TNN (UNN) 3015/3515,

IX-NNC2515/3515

IX-NNN50/60, IX-NNW50 /60,

IX-HNN (INN) 50/60, IX-NNC50/60

IX-NNN70/80, IX-NNW70/80,

IX-HNN (INN) 70/80, IX-NNC70/80

IX-NSN5016/6016 1

Single axes, orthogonal axes

Vertical installation

(total motor wattage)

Horizontal installation

(total motor wattage)

Number of external regenerative unit(s)

~ 100 W ~ 200 W 0

~ 800 W ~ 1000 W 1

~ 1200 W ~ 1500 W 2

~ 1500 W --- 3

* Conditions for the above guide table

Actuator series: ISA (400 W or below) or ISP (600/750 W)

Stroke: Maximum stroke at which the maximum speed can be output (600 to 800 mm depending on the wattage)

Speed: Rated speed, Acceleration: 0.3 G, Load capacity: Rated load capacity

Operating condition: Synchronous reciprocating operation at a duty of 50%

* The maximum number of external regenerative resistors that can be connected is eight.

* In certain conditions such as when the operating duty is high or acceleration/deceleration is high, more

regenerative resistors may be needed than the applicable number specified in the table above.

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Iai-america XSEL-QX Manuel d'utilisateur Page 448

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