External Regenerative Resistor - Omron XTRADRIVE User Manual

XtraDrive User Manual
5.6.1.

External Regenerative Resistor

When installing an external regenerative resistor, a parameter setting
must be changed as shown below.
Parameter
Regenerative
Pn600
Resistor Capacity
The default setting of "0" in the above table is the set value when the
servo amplifier's built-in resistor is used or when a servo amplifier
without a built-in resistor is used.
When installing an external regenerative resistor, set the regenerative
resistor's capacity (W).
Example: When the external regenerative resistor's actual consumable capacity is 100W, set the parameter to
"10" (10 x 10W = 100W)
Note: 1. In general, when resistors for power are used at the rated load ratio, the resistor temperature increases
to between 200°C and 300°C. The resistors must be used at or below the rated values.
Check with the manufacturer for the resistor's load characteristics. Use resistors at no more than 20% of
the rated load ratio with natural convection cooling, and no more than 50% of the rated load ratio with
forced air-cooling. Parameter Pn600 must be set for the derated resistor.
2. Use of resistors with thermal switches is recommended as a safety precaution.
Connecting Regenerative Resistors
The method for connecting regenerative resistors is as follows.
Disconnect the wire between the servo amplifier's B2 and B3 terminals
and connect an external regenerative resistor between the B1 and B2
terminals.
Signal
Setting Range: 0 to maximum
Default Setting: 0
XtraDrive
Regenerative resistor
B1
B2
B3
*The us er m us t provide the regenerative res is tor.
5-73
Chapter 5: Parameter Settings and Functions
Setting (x 10W)
Be sure to take out the lead wire
between the B2 and B3 terminals.
Description
Speed/Torque Control,
Position Control