Applied Motion RS-232 - Manual (Page 225)

225 920-0002 Rev. I
2/2013
Host Command Reference
ZT - Regen Resistor Peak Time
Compatibility: BLuAC5 and STAC6 drives only
Sets or requests the regeneration resistor time constant. Decides the peak time that the resistor can tolerate full
regeneration voltage. When regeneration occurs the full regeneration voltage of 400 volts is applied across the
resistor. The peak wattage is typically very high, for example with the built-in 40 ohm resistor the peak wattage is
4000 Watts. Power resistors will tolerate this for only a brief period of time. In the case of the built-in 40 ohm/ 50
Watt regen resistor it is only 0.3125 seconds. The ZT value provides the resistor time constant used to create the
“filter” for calculating average wattage in the regen resistor.
Command Details:
Structure ZT{Parameter #1}
Type BUFFERED
Usage READ/WRITE
Non-Volatile Yes
Register Access None
Parameter Details:
Parameter #1 Maximum time for peak regen
- units 0.25 milliseconds
- range 1 - 32000
Examples:
Command Drive sends Notes
ZT1250 - Regen resistor peak time set to 0.3125 seconds
ZT ZT=1250