AC vector motors and drives
[COLOR=#000000][FONT=verdana]I am working on a project where we want to run at a large range of speeds. [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana].03ft/min to 600ft/min. The motor I have runs a 12.5" dia drive drum. [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]Right now I am able to run the 600ft/min at 62Hz but the low range is where I am running into problems. I am using a 1000:1 vector motor and allen bradley 755 drive. In order to run the .03ft/min with my 10:1 gear reduction I need a output frequency of .003Hz. Is this even possible with a drive?[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]Has anyone ever run this large of range without secondary gearing?[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]Here are my motor specs. [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]Specifications: ZDVSM3661T[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]SPEC. NUMBER: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]06H928X181Z1[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]CATALOG NUMBER: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]ZDVSM3661T[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]FL AMPS: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]8.2/4.1[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]BEARING-DRIVE-END: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]6206[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]BEARING-OPP-DRIVE-END: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]6206[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]BLOWER-AMPS: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]--[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]BLOWER-HERTZ: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]--[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]BLOWER-PHASE: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]--[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]BLOWER-VOLTS: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]--[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]DESIGN CODE: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]B[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]DOE-CODE: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]010A[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]FL EFFICIENCY: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]89.5[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]FRAME: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]182TC[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]HERTZ: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]60[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]INSULATION-CLASS: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]F[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]MAGNETIZING-CURRENT: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]4.2/2.1[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]MAXIMUM-RPM: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]5400[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]SPEED [rpm]: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]1755[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]OUTPUT [hp]: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]3 TE[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]PHASE: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]3[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]RATING: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]40C AMB-CONT[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]ROTOR-INERTIA: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]0.3[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]SERIAL-NUMBER: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]--[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]SERVICE FACTOR: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]1.00[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]SLIP-HERTZ: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]1.5[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]VOLTAGE: [/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]230/460[/FONT][/COLOR]
[COLOR=#000000][FONT=verdana]What does slip-hertz mean? Does this mean the motor will slip under 1.5Hz? This is below the 1000:1 ratio. Should I not get full torque at .06Hz?[/FONT][/COLOR]