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| HPI Combi Flow User Guide |
Version 3.11
www.lafert.com
Par.
Parameter Name
Minimum
Maximum
Default
Units
P2-19
Relay 2 / AO2 Upper Limit
P2-20
200.0
100.0
%
Sets the upper limited value for P2-13 and P2-18, please refer to P2-13 or P2-18.
P2-20
Relay 2 / AO2 Lower Limit
0.0
P2-19
0.0
%
Sets the lower limited value for P2-13 and P2-18, please refer to P2-13 or P2-18.
P2-21
Display Scaling Factor
-30.000
30.000
0.000
-
Determines the factor for the scaled display value.
The variable selected in P2-22 is scaled by the factor set in P2-21.
P2-22
Display Scaling Source
0
3
0
-
Source value used when custom units are to be shown on the drive display.
0 : Motor Speed
1 : Motor Current
2 : Analog Input 2
3 : P0-80 Value
NOTE
P2-21 & P2-22 allow the user to program the HP Combi Flow display to show an alternative output unit scaled from an
existing parameter (for example, to display conveyer speed in metres per second based on the output frequency).
This function is disabled if P2-21 is set to 0. If P2-21 is set >0, the variable selected in P2-22 is multiplied by the factor entered in P2-21,
and is shown on the drive display whilst the drive is running.
P2-23
Zero Speed Holding Time
0.0
60.0
0.2
Seconds
Determines the time for which the drive output frequency is held at zero when stopping, before the drive output is disabled.
P2-24
Effective Switching Frequency
Motor Rating Dependent
kHz
Effective power stage switching frequency. Higher frequencies reduce audible noise from the motor, and improve the output current
waveform, at the expense of increased drive losses.
NOTE
De-rating of the drive output current may be required when increasing P2-24 beyond the minimum setting. Refer to section
11.8.3. Derating for Switching Frequency for further information.
P2-25
Fast Decel Ramp Time
0.00
240.0
0.0
Seconds
This parameter allows an alternative deceleration ramp down time to be programmed into the HP Combi Flow.
Fast Deceleration ramp is selected Automatically in the case of a mains power loss if P2-38 = 2.
When ramp rate in P2-25 is set to 0.0, the drive will coast to stop.
Fast deceleration ramp can also be selected using the user defined logic configuration parameters in menu 9 (P9-02), or selection
configured through the drive PLC function using the HP Drive Tools Studio PC software.
In addition, if P2-25 > 0, P1-02 > 0, P2-10 = 0 and P2-09 = P1-02, this ramp time is applied to both acceleration and deceleration
when operating below minimum speed, allowing selection of an alternative ramp when operating outside of the normal speed range,
which may be useful in pump and compressor applications.
P2-26
Spin Start Enable
0
2
1
-
When Enabled, the drive will attempt to determine if the motor is already rotating on start up, and to detect rotational speed and
direction. The drive will begin control of the motor from its present (detected) speed. A short delay may be observed when starting the
drive whilst the spin start function is completed.
0 : Disabled
1 : Enabled
2 : Enabled following Trip, Brown Out or Coast Stop
P2-27
Standby Mode Timer
0.0
250.0
20
Seconds
This parameter defines the time period, whereby if the drive operates at the frequency / speed set in P3-14 (Standby speed threshold)
for greater than the set time period, the HP Combi Flow output will be disabled, and the display will show
t
. The function is
disabled if P2-27 = 0.0.
P2-28
Slave Speed Scaling Control
0
3
0
-
Active in Keypad mode (P1-12 = 1 or 2) and Slave mode (P1-12=5) only. The keypad reference can be multiplied by a preset scaling
factor or adjusted using an analog trim or offset.
0 : Disabled.
No scaling or offset is applied.
1 : Actual Speed = Digital Speed x P2-29
2 : Actual Speed = (Digital Speed x P2-29) + Analog Input 1 Reference
3 : Actual Speed = (Digital Speed x P2-29) x Analog Input 1 Reference
P2-29
Slave Speed Scaling Factor
-500.0
500.0
%
100.0
Slave speed scaling factor used in conjunction with P2-28.
9
Extended P
arameters
