Emerson Powerdrive F300 Reference Manual page 23

Parameter 01.002 Pre-skip Filter Reference
Short description Displays the level of the reference after the reference clamps
Mode Open‑Loop
Minimum −VM_SPEED_FREQ_REF
Default
Type 32 Bit Volatile
Display Format Standard
Coding RO, VM, ND, NC, PT
Pre-skip Filter Reference (01.002) is the level of the reference after the reference clamps but before the skip filters.
Parameter 01.003 Pre-ramp Reference
Short description Displays the final output from the Menu 1 reference system
Mode Open‑Loop
Minimum −VM_SPEED_FREQ_REF
Default
Type 32 Bit Volatile
Display Format Standard
Coding RO, VM, ND, NC, PT
The Pre-ramp Reference (01.003) is the final output from the Menu 1 reference system that is fed into the Menu 2 ramp system.
Parameter 01.004 Reference Offset
Short description Defines the the offset applied to the reference
Mode Open‑Loop
Minimum −VM_SPEED_FREQ_REF
Default 0.0
Type 32 Bit User Save
Display Format Standard
Coding RW, VM
If Reference Offset Select (01.009) = 0 then Reference Selected (01.001) is the selected reference multiplied by [1 + (Percentage Trim (01.038) / 100.00)].
If Reference Offset Select (01.009) = 1 then the Reference Offset (01.004) is added to the selected reference to give Reference Selected (01.001).
Parameter 01.006 Maximum Reference Clamp
Short description Defines the maximum value for the reference
Mode Open‑Loop
Minimum −VM_POSITIVE_REF_CLAMP1
Default See exceptions below
Type 32 Bit User Save
Display Format Standard
Coding RW, VM
Region Default Value
50Hz 50.0
60Hz 60.0
Maximum Reference Clamp (01.006) provides a limit on the maximum frequency or speed. (If Select Motor 2 Parameters (11.045) = 1 then
M2 Maximum Reference Clamp (21.001) is used instead.)
Parameter 01.007 Minimum Reference Clamp
Short description Defines the minimum value for the reference
Mode Open‑Loop
Minimum −VM_NEGATIVE_REF_CLAMP1
Default 0.0
Type 32 Bit User Save
Display Format Standard
Coding RW, VM
If Negative Reference Clamp Enable (01.008) = 1 then Minimum Reference Clamp (01.007) is forced to be a negative value and is applied to the final
reference as the negative limit. If Negative Reference Clamp Enable (01.008) = 0 then -Maximum Reference Clamp (01.006) is applied to the final
reference as the negative limit. (If Select Motor 2 Parameters (11.045) = 1 then M2 Minimum Reference Clamp (21.002) is used instead.)
The minimum reference clamp is also used to provide the minimum speed limit for uni-polar mode (i.e. Bipolar Reference Enable (01.010) = 0) after
the Reference Selected (01.001).
Powerdrive F300 Parameter Reference Guide
Issue: 01.15.00
Maximum VM_SPEED_FREQ_REF
Units
Update Rate 4ms write
Decimal Places 1
Maximum VM_SPEED_FREQ_REF
Units
Update Rate 4ms write
Decimal Places 1
Maximum VM_SPEED_FREQ_REF
Units
Update Rate 4ms read
Decimal Places 1
Maximum VM_POSITIVE_REF_CLAMP1
Units
Update Rate Background read
Decimal Places 1
Maximum VM_NEGATIVE_REF_CLAMP1
Units
Update Rate Background read
Decimal Places 1
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