Menu 37 − AMC Electronic Gear Box

Mode: RFC‑S

Electronic gearbox


Parameter37.001  AMC EGB Enable Rigid Lock
Short descriptionSet to 1 to enable rigid locking of the electronic gearbox
ModeRFC‑S
Minimum0Maximum1
Default0Units 
Type1 Bit User SaveUpdate RateBackground read
Display FormatStandardDecimal Places0
CodingRW

When the electronic gearbox is not selected or the Advanced Motion Controller is disabled AMC EGB Locked (37.006) = 0 and the electronic gearbox control is in the inactive state. The electronic gearbox is enabled when the motion controller is enabled and AMC Reference Select (34.007) is changed to a value of 4

If AMC EGB Enable Rigid Lock (37.001) = 0 the system attempts to match the speed of the slave with the speed of the master. The speed at the output of the profile generator can only change within the acceleration/deceleration constraints set up for the profile generator (i.e. AMC Profile Acceleration (38.001), AMC Profile Deceleration (38.002) and AMC Profile Maximum Speed (38.003)). Once the modulus of the difference between the speed at the input and output of the profile generator is less than or equal to AMC EGB Locking Speed Band (37.004) the profile generator is disabled so that the output of the profile generator follows the input with no delay and AMC EGB Locked (37.006) is set to 1. AMC EGB Locked (37.006) can be reset to 0 and the profile generator re-enabled by selecting another reference with AMC Reference Select (34.007)) or by disabling the motion controller. The diagram below shows the speed of the master and slave systems with AMC EGB Enable Rigid Lock (37.001) = 0.

If AMC EGB Enable Rigid Lock (37.001) = 1 the system attempts to match the speed and position of the slave before changing to the locked state as shown above. The profile generator output will exceed the profile generator input speed to make up the position lost during acceleration. The system only changes to the locked state when the modulus of the speed difference between the input and output of the profile generator is within the AMC EGB Locking Speed Band (37.004) and the modulus of the difference between the input and output position is within the AMC EGB Locking Position Band (37.005).


Parameter37.002  AMC EGB Ratio Numerator
Short descriptionDefines the numerator of the ratio used at the input to the electronic gearbox
ModeRFC‑S
Minimum1Maximum2147483647
Default1000Units 
Type32 Bit User SaveUpdate Rate4ms read
Display FormatStandardDecimal Places0
CodingRW

The electronic gear box ratio (AMC EGB Ratio Numerator (37.002) / AMC EGB Ratio Denominator (37.003)) is applied to changes in the AMC Master Position (32.004) at the input to the electronic gearbox.


Parameter37.003  AMC EGB Ratio Denominator
Short descriptionDefines the denominator of the ratio used at the input to the electronic gearbox
ModeRFC‑S
Minimum1Maximum2147483647
Default1000Units 
Type32 Bit User SaveUpdate Rate4ms read
Display FormatStandardDecimal Places0
CodingRW

See AMC EGB Ratio Numerator (37.002).


Parameter37.004  AMC EGB Locking Speed Band
Short descriptionDefines the speed at which the electronic gearbox locks
ModeRFC‑S
Minimum−VM_AMC_SPEED_UNIPOLARMaximumVM_AMC_SPEED_UNIPOLAR
Default10.92UnitsUU/ms
Type32 Bit User SaveUpdate RateBackground read
Display FormatStandardDecimal Places2
CodingRW, VM

The default value of 10.92 UU/ms is the equivalent of 10rpm for a 16 bits per revolution feedback device with a user units ratio = 1.

See AMC EGB Enable Rigid Lock (37.001).


Parameter37.005  AMC EGB Locking Position Band
Short descriptionDefines the position band used to lock the electronic gearbox
ModeRFC‑S
Minimum0MaximumVM_AMC_POSITION_UNIPOLAR
Default256UnitsUU
Type32 Bit User SaveUpdate RateBackground read
Display FormatStandardDecimal Places0
CodingRW, VM

See AMC EGB Enable Rigid Lock (37.001).


Parameter37.006  AMC EGB Locked
Short descriptionDisplays when the electronic gearbox is locked
ModeRFC‑S
Minimum0Maximum1
Default Units 
Type1 Bit VolatileUpdate Rate4ms write
Display FormatStandardDecimal Places0
CodingRO, ND, NC, PT

See AMC EGB Enable Rigid Lock (37.001).