ACS510 User’s Manual
99
Start-Up
2605
U/F RATIO
Selects the form for the U/f (voltage to frequency) ratio
below field weakening point.
1 =
LINEAR
– Preferred for constant torque applications.
2 =
SQUARED
– Preferred for centrifugal pump and fan
applications. (Square is more silent for most operating
frequencies.)
3 =
FREELY DEFINED -
Freely defined by parameter
2610 ... 2618.
See figure.
2606
SWITCHING FREQ
Sets the switching frequency for the drive. Also see parameter 2607
SWITCH
FREQ
CTRL
Derating" on page 212.
• Higher switching frequencies mean less noise.
• The 1, 4 and 8 kHz switching frequencies are available for all types, except for ACS510-01-246A-4 and ACS510-
01-290A-4 (only 1 and 4 kHz are available).
• The 12 kHz switching frequency is available only on frame sizes R1…R4, except for R4 types ACS510-01-088A-4.
2607
SWITCH FREQ CTRL
The switching frequency may be reduced if the ACS510 internal temperature rises above a limit. See Figure. This
function allows the highest possible switching frequency to be used based on operating conditions. Higher switching
frequency results in lower acoustic noise.
0 =
OFF
– The function is disabled.
1 =
ON
– The switching frequency is limited according to the figure.
2608
SLIP COMP RATIO
Sets gain for slip compensation (in %).
A squirrel-cage motor slips under load. Increasing the frequency as the motor torque increases compensates for the
slip.
0 – No slip compensation.
1…200 – Increasing slip compensation. 100% means full slip compensation.
2609
NOISE SMOOTHING
This parameter introduces a random component to the switching frequency. Noise smoothing distributes the acoustic
motor noise over a range of frequencies instead of a single tonal frequency resulting in lower peak noise intensity.
The random component has an average of 0 Hz and is added to the switching frequency set by parameter 2606
SWITCHING
FREQ
. This parameter has no effect if parameter 2606 = 12 kHz.
0 =
DISABLE
1 =
ENABLE
2610
USER U1
This parameter define the output voltage reference (in Volts) at P2611
USER F1.
Please see parmeter 2605.
Code Description
Motor
Voltage
F3
USER F1
F2
F4
P9907
P2603
f (Hz)
P2610
P2612
P2614
P2616
P2618
P2611
P2613 P2615
P2617
NOM FREQ
MOTOR
IP COMP
USER U1
USER U2
USER U3
USER U4
FW VOL
80 °C
100 °C
ACS510
4 kHz
12 kHz
Temperature
f
sw
Limit
R1…R4 Drives
8 kHz
90 °C
R5…R6 Drives
Supplied from China by: Guangzhou Tofee Electro Mechanical Equipment Co., Ltd
Email: [email protected]