Regenerative Resistors

For Teco:

Most users will use the internal resistor; leave the jumper between PC-P1
Persistent AL02 errors may require the addition of an external resistor to the servo drive
For an external resistor, remove PC-P1 jumper and wire between P-PC

Set Cn012 accordingly (Power setting for External Regeneration Resistor)
See pg. 5-72 in Teco TSTA manual for calculation

For Yaskawa:

If the drive has an internal resistor, there will be a jumper between B2-B3 terminals
Some servopack models do not have an internal resistor so an external regenerative resistor is required
For an external resistor, remove B2-B3 if present and wire between B1-B2

Set Pn600 with the Regenerative Resistor Capacity
A.320 alarm is because the resistor wattage has not been programmed or not set correctly
See pg. 3-38 thru 3-40 for further details (not sure what page that is referring to. Found it starting 3-41 in our online manual).

SETTING PN600:

Be sure to set the regenerative resistor capacity (Pn600) to a value that is in accordance with the allowable
capacity of the actual external regenerative resistor being used.

Note:

1. If Pn600 is not set to the optimum value, alarm A.320 will occur.
2. When set to the factory setting (Pn600 = 0), the SERVOPACK’s built-in resistor or Yaskawa’s regenerative resistor
unit has been used.

The setting will vary with the cooling method of external regenerative resistor:
• For natural convection cooling: Set the value to a maximum 20% of the actually installed regenerative
resistor capacity (W).
• For forced convection cooling: Set the value to a maximum 50% of the actually installed regenerative
resistor capacity (W).

Example: Set 20 W (100 W × 20%) for the 100-W external regenerative resistor with natural convection
cooling method:
Pn600 = 2 (unit: 10 W)

See attached PDF for more information.

Keywords:

regen resistor, Teco, Yaskawa, A.320, AL02

Keywords: 10978