Rockwell Automation Publication 750-PM001N-EN-P - February 2017 203
Drive Port 0 Parameters Chapter 3
File
Group
No. Display Name
Full Name
Description
Values
Read-Write
Data Type
APPLICATIONS
Variable Boost
1535 VB Config
Variable Boost Configuration
RO 16-bit
Integer
Controls the variable boost function.
Bit 0 “VB Enable” – Enables the variable boost voltage function.
Bit 1 “Current Rate” – The current rate trigger condition is defined by the level set in P1550 [VB Cur Thresh] with a hysteresis band of P1549 [VB Current Hyst]. The
slope of P1548 [VB Current Rate] is set to either default falling edge or rising edge by Bit 2 “Rising Edge.” If these trigger conditions are met, P1536 [VB Status] Bit 3
“Current Trig” is set.
Bit 2 “Rising Edge” – The current rate trigger condition is defined by the level set in P1550 [VB Cur Thresh] with a hysteresis band of 1549 [VB Current Hyst]. The
slope of P1548 [VB Current Rate] is set to either default falling edge or rising edge by Bit 2 “Rising Edge.” If these trigger conditions are met, P1536 [VB Status] Bit 3
“Current Trig” is set.
Bit 3 “Flux Level” – Sets the flux trigger condition defined by the level of P1545 [VB Flux Thresh]. If P1547 [VB Filt Flux Cur] is greater than or equal to P1545 [VB
Flux Thresh], P1536 [VB Status] Bit 4 “Flux Trigger” is set.
Bit 4 “Minimum Freq” – Sets the minimum frequency trigger source derived from P1 [Output Frequency] and is enabled by setting P1535 [VB Config] Bit 4
“Minimum Freq.” If P1 [Output Frequency] is less than or equal to P1544 [VB Min Freq], P1536 [VB Status] Bit 5 “Freq Trigger” is set.
1536 VB Status
Variable Boost Status
RO 16-bit
Integer
Status bits for the variable boost function.
Bit 0 “VB Enabled” – The variable boost voltage function is enabled.
Bit 1 “VB Timer” – P1538 [VB Time] has expired.
Bit 2 “Triggered” – Indicates that a trigger function has been enabled by 1535 [VB Config].
Bit 3 “Current Trig” – This trigger condition is defined by P1550 [VB Cur Thresh] with a hysteresis band of P1549 [VB Current Hyst]. The slope of P1548 [VB Current
Rate] is set to either default falling edge or rising edge by P1535 [VB Config] Bit 2 “Rising Edge.” If these trigger conditions are met, this bit is set.
Bit 4 “Flux Trigger” – This trigger event is enabled by P1535 [VB Config] Bit 3 “Flux Level.” The trigger condition is defined by the level P1545 [VB Flux Thresh]. If
P1547 [VB Filt Flux Cur] is greater than or equal to P1545 [VB Flux Thresh], P1536 [VB Status] Bit 4 “Flux Trigger” is set.
Bit 5 “Freq Trigger” – This trigger event is enabled when P1 [Output Frequency] is less than or equal to P1544 [VB Min Freq].
Bit 6 “Max Boost” – This trigger event is enabled when P1537 [VB Voltage] reaches P1540 [VB Maximum] before any of the other trigger events cause P1537 [VB
Voltage] to ramp down.
Bit 7 “Hold Freq” – Output frequency is being held at P1543 [VB Frequency].
1537 VB Voltage
Variable Boost Voltage
Displays the output value of the voltage-axis intercept of the V/Hz curve.
When the variable boost function is enabled, the value of [VB Voltage] is ramped up/
down according to the settings of the variable boost function when the drive is running.
This parameter is equal to P60 [Start Acc Boost] and P61 [Run Boost] when the drive is
stopped or when P1535 [VB Config] Bit 0 “VB Enable” = 0.
Units:
Default:
Min/Max:
V AC
0.0
0.0 / 460.0
RO Real
Options
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Minimum Freq
Flux Level
Rising Edge
Current Rate
VB Enable
Default0000000000000000
Bit 1514131211109876543210
0 = Disabled
1 = Enabled
Options
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Hold Freq
Max Boost
Freq Trigger
Flux Trigger
Current Trig
Triggered
VB Timer
VB Enabled
Default0000000000000000
Bit 1514131211109876543210
0 = Condition False
1 = Condition True
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