User`s manual

CHAPTER 5.0 Functional Overview 5-6
CDS7324 (FORMERLY LSF-0819)
Rev. A INSTALLATION & USER’S MANUAL
The parameters associated with the regeneration control are given below.
Parameter Name Field Number Description
regen_enable 1268 Regeneration Control Mode
regen_on_voltage 1249 Regeneration Transistor Turn-on Voltage
regen_off_voltage
1248 Regeneration Transistor Turn-off Voltage
regen_power_filtered
1252 Average Regeneration Power (Measured)
regen_internal_resistance
1258 Internal Regeneration Resistor Resistance
regen_internal_resistor_pow
er
1259 Internal Regeneration Resistor Power
regen_internal_resistor
initial_on_time
1261 Internal Regeneration Resistor Initial on-time
in ms
regen_internal_resistor_conti
nuous_on_time
1260 Internal Regeneration Resistor Continuous
on-time in ms
regen_external_resistance
1262 External Regeneration Resistor Resistance
regen_external_resistor_pow
er
1263 External Regeneration Resistor Power
regen_external_resistor_initi
al_on_time
1265 External Regeneration Resistor Initial on-
time in ms
regen_external_resistor_con
tinuous_on_time
1264 External Regeneration Resistor Continuous
on-time in ms
regen_power_capability
1269 Total Regeneration Power Capability
regen_max_current
1266 Maximum Regeneration Current
Table 5.3 Regeneration Parameters
The Regeneration transistor turn-on and turn-off voltages are set with the motor parameters and DC bus
overvoltage level. Typically these voltages are set at follows.
Motor Voltage
Bus
Overvoltage
Regen on
Voltage
Regen off Voltage
300V 400V 390V 380V
600V 800V 780V 760V
Table 5.4 Typical Regeneration Turn-on & Turn-off Voltage Levels
For drives equipped with an internal Regeneration resistor, the parameters associated with that resistor are set
automatically. If the drive has external regeneration capability only, all regeneration resistor parameters are set to
zero by default. In this case, the drive will display a fault (F3) and will not enable until suitable parameters for the
external regeneration resistors are entered and saved.
The software also checks the value of regeneration resistance entered. If too low a value is entered, such that the
current that would flow on turn-on of the regeneration transistor exceeds the ratings of the regeneration,
transistor, a fault (F3) is also reported.