WEG CFW08 Vector inverter User Manual

24
GENERAL INFORMATION
b) Automatic Torque Boost (Automatic IxR Compensation) and Slip
Compensation
In the µline only the rated motor current (P401) was used in
the Automatic IxR Compensation and the Slip Compensation
functions. In the µline the rated motor power factor of the motor
was considered as a fixed value and equal to 0.9.
Now in the new CFW-08, are used the parameters P401 and P407
(rated motor power factor). Thus:
Example: When in an application with the µline the following setting
was required: P401=3.8A, now with the new CFW-08 you must perform
the following setting: P401=3.8A and P407=0.9
or
P407= rated cos ∅ of the used motor and P401=3.8
x
0.9
P407
Parameters existing only in Special Software Versions of the
µµ
µµ
µline
a) Quick Inputs
In the new CFW-08, the response time of the the digital inputs is
10ms (max.).
In addition, the minimum acceleration and deceleration time was
reduced from 0.2s (µline) to 0.1s (CFW-08). Besides the DC braking
process can be interrupted before it has been concluded, for
instance, when a new enabling is required.
b) Other changes
P120=2 - digital reference backup via P121 independently of the
reference source.
P265=14 - DI3: multispeed using ramp #2.
New Parameters and Functions
The reference 1 of the multispeed that was in Parameter P121 (in
µline) is now in Parameter P124 (in CFW-08).
The DC link regulation level (ramp holding) can now be
programmed in Parameter P151 - in the µline this level was fixed to
377V for the 200-240V line and 747V for the 380-480V line.
Also the programming way of Parameter P302 has changed. In the
µline P302 was related to the voltage applied to the output during the
DCbraking, now in the new CFW-08, P302 defines the DC Braking
Current.
PID regulator.
Suammarizing, the new parameters are: P009, P040, P124, P151,
P178, P202, P203, P205, P219, P238, P239, P240, P251, P252, P279,
P399, P400, P402, P403, P404, P407, P408, P409, P520, P521, P522,
P525, P526, P527 e P528.
P401
uline
. 0.9 = P401 x P407
CFW-08

WEG CFW08 Vector inverter Specifications

General

Frequency Range	0 to 300 Hz
Overload Capacity	150% for 60 seconds
Protection Degree	IP20
Communication	RS485, Modbus RTU
Voltage	200 V to 240 V
Control Mode	Vector Control
Ambient Temperature	-10°C to 50°C
Input Frequency	50 Hz / 60 Hz
Output Voltage	0 to input voltage
Braking	Dynamic braking resistor (optional)
Protection Features	Overcurrent, overvoltage, undervoltage, overtemperature
Operating Temperature	-10°C to 50°C
Cooling Method	Forced air cooling (fan)
Humidity	5% to 90% non-condensing