Vonsch Quatrofrem Series, Конфигурация и диагностика

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UNIFREM v.3.41x
10 May 2017 Page 73 from 180
Name [ID] Description Def.
DD setpoint
[754]
Voltage setpoint of the dynamic deceleration controller. 650,0 V
Undervoltage 1 ÷
Overvoltage
2
Voltage value of the DC link, at which the dynamic deceleration function starts, and which
is kept by dynamic deceleration controller.
1
Refer to chapter 3.1 Undervoltage, overvoltage (str. 14) by product type.
2
Refer to chapter 3.1 Undervoltage, overvoltage (str. 14) by product type.
P gain VC [751] Gain value of the voltage controller (VC) proportional term. 0,500
0,000 ÷ 100,000
The higher the P term of VC value, the bigger the damping and lower the current
regulation by load steps. For the slow I-term of VC, lower gain is set and the higher gain is
set for faster I term, so the VC remains stable. When changing this parameter, we advise
consulting this step always with the VONSCH s.r.o. service.
I gain VC [752] Gain value of the voltage controller (VC) integration term. 0,100
0,001 ÷ 100,000
Defines the regulation dynamics of the DC voltage using the VC. When changing this
parameter, we advise consulting this step always with the VONSCH s.r.o. service.
D gain VC [750] Gain value of the voltage controller (VC) derivative term. 0,200
0,000 ÷ 100,000
The higher the D-term of VC, the more is the voltage regulation sensitive to rapid voltage
changes of the DC link. During sudden power supply outages, it is necessary to use the
derivative term. Even a small derivative term can stabilize unstable controller oscillations.
When changing this parameter, we advise consulting this step always with the VONSCH
s.r.o. service.
VC damping
[1057]
Damping gain of voltage controller used for frequency stabilization. 0,000
0,000 ÷ 1000,000 Value of 0 means that the damping signal is not used.
VC turn off freq.
[1056]
Lower limit of the frequency band at which the voltage controller starts. 10,0 Hz
0,0 ÷ Nom.
frequency [4]
Regenerating is less effective on low speeds. This parameter defines the minimal rotor
frequency, under which the voltage controller is turned off.
7.5.8 BRAKE MODULE
Group of parameters number [376]
Brake module operation settings parameters.
Brake module (BM) is used for dissipation of excess energy, which is created during the motor regenerative
operation or deexcitation of single-phase or other induction loads. Prerequisite activity is the connecting of
brake resistor (BR) to BR and + power terminals. Thermal contact of BR can be connected to an binary input
as RESET Reset source [704] (page 49) or External fault External fault source [225] (page 108).
MENU \ SETTINGS \ CONTROL AND REGULATION \ BRAKE MODULE
Name [ID] Description Def.
Brake module
[346]
Turning on the Brake module (BM) operation.
BM serves for the energy transfer that flows back during the regenerative
operation to the converter. Correct function is conditional to the braking resistor
(BR) being connected to the power terminals BR and +.
Turned
off
Turned off Brake module is turned off.
Turned on
Brake module is turned on and operates if the Braking Resistor (BR) is connected to the
converter.
Turned on when
running Brake module is turned on and operates when the converter generates voltage on its
output.
BM operating
voltage [377]
Brake module operation voltage. 685,0 V
Undervoltage
1
÷
Overvoltage
2
When the value of this parameter is too high, the risk of the fault " E4-Overvoltage (page
32)"is high. Probability that this fault occurs in the first phase of breaking is higher when
a BR of less power rating is used.
1
Refer to chapter 3.1 Undervoltage, overvoltage (str. 14) by product type.
2
Refer to chapter 3.1 Undervoltage, overvoltage (str. 14) by product type.
BM blocking
[1204]
Setting the source of blocking the brake module operation.
Thermal contact protects the brake module against damage. This parameter
can select binary input BINx, where this contact is connected to, or the output
of logical block.