Safety
information
Product
information
Mechanical
installation
Electrical
installation
Getting
started
Basic
parameters
Running
the motor
Optimization
NV Media Card
Operation
Building
Automation
Advanced
parameters
Technical
data
Diagnostics
UL listing
information
HVAC Drive H300 201
Issue Number: 3
VM_POSITIVE_REF_CLAMP1
Limits applied to the positive frequency or speed reference clamp
VM_POSITIVE_REF_CLAMP2
Units
Open-loop: Hz
RFC-A, RFC-S: rpm or mm/s
Range of [MIN]
Open-loop: 0.0
RFC-A, RFC-S: 0.0
Range of [MAX]
Open-loop: 550.0
RFC-A, RFC-S: 0.0 to 50000.0
Definition
VM_POSITIVE_REF_CLAMP1[MAX] defines the range of the positive reference clamp, Maximum Reference Clamp
(01.006), which in turn limit the references. In RFC-A and RFC-S modes a limit is applied so that the position feedback
does not exceed the speed where the drive can no longer interpret the feedback signal correctly as given in the table
below. The limit is based on the position feedback device selected with Motor Control Feedback Select (03.026). It is
possible to disable this limit if the RFC Feedback Mode (03.024) ≥ 1 so that the motor can be operated at a speed
above the level where the drive can interpret the feedback in sensorless mode. It should be noted that the position
feedback device itself may have a maximum speed limit that is lower than those given in the table. Care should be
taken not to exceed a speed that would cause damage to the position feedback device.
In open-loop mode VM_POSITIVE_REF_CLAMP1[MAX] is fixed at 550.0 Hz
In RFC mode a limit is applied to the speed reference of 550 x 60 / Motor pole pairs. Therefore, with a 4 pole motor the
limit for VM_POSITIVE_REF_CLAMP1[MAX] will be 16,500 rpm.
VM_POSITIVE_REF_CLAMP1[MIN] = 0.0
VM_POSITIVE_REF_CLAMP2 is defined in the same way as VM_POSITIVE_REF_CLAMP1 except
VM_POSITIVE_REF_CLAMP2[MAX] defines the range of the positive reference clamp, M2 Maximum Reference
Clamp (21.001), which in turn limits the references.
Feedback device VM_POSITIVE_REF_CLAMP1[MAX]
AB,
AB Servo
(500 kHz x 60 / rotary lines per revolution) rpm
(500 kHz / linear line pitch in mm) mm/s
FD, FR,
FD Servo, FR Servo
(500 kHz x 60 / rotary lines per revolution)/2 rpm
(500 kHz / linear line pitch in mm)/2 mm/s
SC,
SC Hiper, SC EnDat,
SC SSI, SC Servo
(500 kHz x 60 / sine waves per revolution) rpm
(500 kHz x linear line pitch in mm) mm/s
Any other device 50000.0 rpm or mm/s
VM_POWER Range applied to parameters that either set or display power
Units kW
Range of [MIN] -99999.999 to 0.000
Range of [MAX] 0.000 to 99999.999
Definition
VM_POWER[MAX] is rating dependent and is chosen to allow for the maximum power that can be output by the drive
with maximum a.c. output voltage, at maximum controlled current and unity power factor.
VM_POWER[MAX] = √3 x VM_AC_VOLTAGE[MAX] x VM_DRIVE_CURRENT[MAX] / 1000
VM_POWER[MIN] = -VM_POWER[MAX]
VM_RATED_CURRENT Range applied to rated current parameters
Units A
Range of [MIN] 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
To Next Page
Loading...
