Nidec H300 - Vm_Speed; Vm_Speed_Freq_Keypad_Ref

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202 HVAC Drive H300
Issue Number: 3
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_KEYPAD_REF Range applied Keypad Control Mode Reference (01.017)
Units Open-loop: Hz RFC-A, RFC-S: rpm or mm/s
Range of [MIN] Open-loop: -550.0 to 550.0 RFC-A, RFC-S: -50000.0 to 50000.0
Range of [MAX] Open-loop: 0.0 to 550.0 RFC-A, RFC-S: 0.0 to 50000.0
Definition
This variable maximum is applied to Keypad Control Mode Reference (01.017). The maximum applied to these
parameters is the same as other frequency reference parameters.
VM_SPEED_FREQ_USER_REFS [MAX] = VM_SPEED_FREQ_REF[MAX]
However the minimum is dependent on Negative Reference Clamp Enable (01.008) and Bipolar Reference Enable
(01.010).
Negative
Reference Clamp
Enable (01.008)
Bipolar Reference
Enable (01.010)
VM_SPEED_FREQ_USER_REFS[MIN]
00
If Select Motor 2 Parameters (11.045) = 0 Minimum Reference
Clamp (01.007), otherwise M2 Minimum Reference Clamp (21.002)
0 1 -VM_SPEED_FREQ_REF[MAX]
10 0.0
1 1 -VM_SPEED_FREQ_REF[MAX]