KEB COMBIVERT G6, Руководство пользователя

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CP-Parameter for open-loop operation
CP25 Stall level
This function protects the frequency inverter against switch off through overcurrent during
constant output frequency. When exceeding the adjusted value, the output frequency is re-
duced until the value drops below the adjusted value. "stall" is displayed (CP03) when the
function is active.
CP26 Speed search condition
An error can be triggered caused by different rotary field frequencies at starting the inverter
on a free-wheeling motor. With activated speed search the inverter searches for the actual
motor speed, adapts its output frequency and accelerates with the adjusted ramp to the given
set value. "Speed search" is displayed (CP03) during the search phase. The parameter de-
termines, under what conditions the functions operate.
In case of several conditions the sum of the value must be entered. Example: CP26=12
means after reset and after auto-reset UP.
Value Condition
0 Function off
1 at control release
2 at switch on
4 after reset
8 after Auto-Reset UP
16 after LS
CP27 Motor protect. function response
The warning function protects the connected motor against thermal destruction caused by
high currents. The function corresponds largely to mechanical motor protective components,
additionally the influence of the motor speed on the cooling of the motor is taken into consid -
eration. The load of the motor is calculated from the measured apparent current (CP04) and
the adjusted rated motor current (CP29).
For motors with separately driven fan or rated frequency of a self-ventilated motor following
tripping times (VDE 0660, part 104) apply:
1,2 • Rated current ≤ 2 hours
1,5 • Rated current ≤ 2 minutes
2 • Rated current ≤ 1 minute
8 • Rated current ≤ 5 seconds
In case of failure CP27 activates the motor protection function and adjusts the corre-
sponding response as follows:
CP27 Response Description
0 Error,
restart after reset
Error message „Error! …“
Immediate switch off of modulation. Correct the er-
ror for the restart and activate reset.
The pre-warning changes into an error. The drive
remains in the error state until a reset signal is rec-
ognized.
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