SKS Sweden Bonfiglioli Vectron ACTIVE CUBE ACU 201 Series, Operating Instructions Manual

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188
Operating Instructions ACU
09/08
If the output current has already been reduced due to the fact that the long-term
overload has used up, the short-term overload is no longer available even if it has not
been used up beforehand. The defined overload reserve (Ixt) of the frequency inver-
ter is available again after a power reduction lasting 10 minutes.
Output signals
Digital outputs can signalize the achievement of a limit value – selected in
Operation
Mode
573.
15 - Warning Current Limitation Intelligent Current Limits active. Output current
is limited.
16 - Controller Current Limit.
Long Term Ixt
The overload reserve for 60 s has been used up
and the output current is being limited.
17 - Controller Current Limit.
Short Term Ixt
The overload reserve for 1 s has been used up
and the output current is being limited.
18 - Controller Current Limit. Tc Intelligent Current Limits active. Maximum heat
sink temperature Tc reached.
19 - Controller Current Limit.
Motor Temp.
Intelligent Current Limits active. Maximum mo-
tor temperature reached.
16.2 Voltage controller
The voltage controller contains the functions necessary for monitoring the DC link
voltage.
−
The DC link voltage which rises in generator operation or in the braking process
of the 3-phase machine is controlled to the set limit value by the voltage control-
ler.
− The power failure regulation uses the rotation energy of the drive to bridge
short-term power failures.
The voltage controller is set with the parameter
Operation Mode
670 in accordance
with the application.
Operation Mode
670 Function
0 - Off The function is switched off.
1 - Udc-Limitation active
Overvoltage controller switched on,
with motor chopper. Factory setting.
2 - Mains Support active
Power failure regulation switched on,
with motor chopper, for quick shutdown.
3 - Udc-Limit. & Mains
Supp. active
Overvoltage controller and power failure regulation
switched on, with motor chopper.
12 - Mains Support active,
Chopper not active
Power failure regulation switched on,
without motor chopper.
13 -
Udc-Limit. & Mains
Supp. active, Chopper
not active
Overvoltage controller and power failure regulation
switched on, without motor chopper.
The function motor chopper is available in the field-oriented control methods (in con-
figurations 210, 230, 410, 411 and 430).
When an operation mode with motor chopper is selected, set the
Trigger thre-
shold
507
to the
Reference UD limitation
680
.
Operating Instructions ACU 09/08 188