Final Demand Reference; Zero Frequency Threshold - Emerson Unidrive M200 Parameter Reference Manual

Menu 3 − Frequency Monitoring and Speed Feedback
Mode: Open‑loop
The drive controls asynchronous machines in open loop control with respect to frequency and current. The open loop asynchronous control is further broken down into vector and fixed boost modes.
Parameter

03.001 Final Demand Reference

Short description Displays the final reference to the frequency controller
Mode Open‑loop
Minimum −VM_FREQ
Default
Type 32 Bit Volatile
Display Format Standard
Coding RO, FI, VM, ND, NC, PT
Final Demand Reference (03.001) shows the fundamental drive frequency demand from the Post Ramp Reference (02.001) and the Hard Frequency Reference (03.022) (if enabled).
Parameter

03.005 Zero Frequency Threshold

Short description Defines the threshold for detecting the zero frequency condition
Mode Open‑loop
Minimum 0.00
Default 2.00
Type 16 Bit User Save
Display Format Standard
Coding RW, BU
If the Post Ramp Reference (02.001) is at or below the level defined by this parameter in either direction Zero Frequency (10.003) = 1, otherwise Zero Frequency (10.003) = 0.
Unidrive M200 Parameter Reference Guide
Issue: 01.05.00.10
Maximum VM_FREQ
Units Hz
Update Rate 16ms
Decimal Places 2
Maximum 20.00
Units Hz
Update Rate Background read
Decimal Places 2
45