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Unidrive M702 User Guide 143
Issue Number: 3
VM_RATED_CURRENT Range applied to rated current parameters
Units A
Range of [MIN] -99999.999 to 0.000
Range of [MAX] 0.000 to 99999.999
Definition
VM_RATED_CURRENT [MAX] = Maximum Rated Current (11.060) and is dependent on the drive rating. This is the
Normal Duty rating of the drive.
VM_RATED_CURRENT [MIN] = 0.00
VM_REGEN_REACTIVE Range applied to the reactive current reference in Regen mode
Units %
Range of [MIN] -1000.0 to 0.0
Range of [MAX] 0.0 to 1000.0
Definition
VM_REGEN_REACTIVE[MAX] = ?(VM_MOTOR1_CURRENT_LIMIT2 - ILimit2)
where
ILimit gives the highest level of the active current reference that can occur. This value is defined by the current limit
values. If the current limits are all set to their maximum values (i.e. VM_MOTOR1_CURRENT_LIMIT) then there is no
current capability left for the reactive current. However, if the current limits are reduced the resulting headroom can be
used for the reactive current. ILimit is defined by a combination of all the current limits excluding any reduction of the
current limit due to the motor thermal model.
VM_REGEN_REACTIVE[MIN] = - VM_REGEN_REACTIVE[MAX]
VM_SPEED Range applied to parameters showing speed
Units Open-loop, RFC-A, RFC-S: rpm or mm/s
Range of [MIN] Open-loop, RFC-A, RFC-S: -50000.0 to 0.0
Range of [MAX] Open-loop, RFC-A, RFC-S: 0.0 to 50000.0
Definition
This variable minimum/maximum defines the range of speed monitoring parameters. To allow headroom for overshoot
the range is set to twice the range of the speed references.
VM_SPEED[MAX] = 2 x VM_SPEED_FREQ_REF[MAX]
VM_SPEED[MIN] = 2 x VM_SPEED_FREQ_REF[MIN]
VM_SPEED_FREQ_REF Range applied to the frequency or speed reference parameters
Units
Open-loop: Hz
RFC-A, RFC-S: rpm or mm/s
Range of [MIN]
Open-loop: -550.0 to 0.0
RFC-A, RFC-S: -50000.0 to 0.0
Range of [MAX]
Open-loop: 0.0 to 3000.0
RFC-A, RFC-S: 0.0 to 50000.0
Definition
If Pr 01.008 = 0: VM_SPEED_FREQ_REF[MAX] = Pr 01.006
If Pr 01.008 = 1: VM_SPEED_FREQ_REF[MAX] = Pr 01.006 or |Pr 01.007|, whichever is larger.
If the second motor map is selected (Pr 11.045 = 1) Pr 21.001 is used instead of Pr 01.006 and Pr 21.002 instead of
Pr 01.007.
VM_SPEED_FREQ_REF[MIN] = -VM_SPEED_FREQ_REF[MAX].
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