IAI America PDR-101-MW - Manual (Page 16)

6
(3) Regenerative Resistance Unit (Model REU-1)
When the actuator is operating, the motor (drive unit) uses supplied electric energy to rotate. On the
contrary, when it decelerates, the motor acts as an electric generator that supplies current back to the
controller. This is called a regenerative current.
In the case of a vertical application, a large regenerative current will flow into the controller at descending.
P-Driver has a built-in regenerative resistance, but in the case of vertical applications, an additional
regenerative resistance unit is required, which is sold separately.
♦ Regenerative resistance unit specification
Model REU-1
Unit dimensions W34 mm x H195 mm x D126 mm
Unit weight 0.9 kg
Ratings of built-in regenerative resistance 220 Ω 80W
Accessory
Controller link cable (1 m)
Model CB-ST-REU010
♦ Installation conditions and quantity
A regenerative resistance unit is required only in the case of vertical applications. It is not required for
horizontal applications.
Motor wattage of vertical axis Quantity
0~150 W Not required
~200 W 1 unit is required.
~400 W 1 unit is required.
~600 W 1 unit is required.
~750 W 2 units are required.
z
Alarms are not detected.
z Thus, excessive heat may be generated if the number of regenerative resistance units is insufficient.
Exercise caution.
RB
3.4
17.4 (16.6)
φ 5
126
5
195 186
(4
)
175
R2.5
(1
0
)
6
17.4
Caution
♦ External dimensions
♦ Connection method
Controller
Regenerative resistance unit
First unit
Controller link cable
Second unit
10
(18.8)