Elmomc SimplIQ Digital Servo Drives-Bell Command Referenc Manual de usuario descargar pdf (Pagina 269)

Suppose that the resolution of the conveyor encoder is similar to the resolution of the

x-axis encoder. To draw an exact circle on the moving cake, the motion 10,000 * cos(2πt) is

programmed as PVT and RM=1, FR[3]=1.

0 0.2 0.4 0.6 0.8 1

-1

x 10

x motion

relative to cake

Conveyer position, as measured

by the auxiliary encoder input

x motor motion command

Time (sec)

6.2.2 ECAM

ECAM is an acronym for electronic CAM, in which the position reference to the drive is

not directly proportional to the total external inputs, but is rather a function of them.

The ECAM-related commands are as follows:

Commands Action

EM[1] Indicates whether the ECAM function is active:

2: ECAM is cyclical.

1: ECAM is linear.

0: Direct external referencing.

Set EM[1] to synchronously activate the most recent settings of

EM[2], EM[3], EM[4], EM[5] and EM[7].

EM[2] Last valid index of ECAM table. Maximum for EM[2] is 1024.

The EM[2] setting goes into effect only at next setting of EM[1] or

next MO=1.

EM[3] Starting position: value of the input to the ECAM function for which

the output of the ECAM function will be ET[EM[5]] (ET of EM[5]).

If EM[3] is out of range for PY, it will be taken modulo PY.

EM[4] Table difference (see sections

6.2.2.1 and 6.2.2.2).

The EM[2] setting goes into effect at next setting of EM[4] or next

MO=1.

SimplIQ for Steppers Application Note The Position Reference Generator

MAN-STECR (Ver. 1.1)

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Elmomc SimplIQ Digital Servo Drives-Bell Command Referenc Manual de usuario Pagina 269