Delta RMC101 User Manual download pdf (Page 874)

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101

RMC100 and RMCWin User Manual

D-12

1. The Arm Home (@) command is issued. Without this command the Actual Position will not

latch to the home position, nor will the Home Input status bit ever be set in this mode.

2. The Actual Position is homed because both the Home and Index (Z) inputs had been active,

but one drops to inactive (the Z in this case). The Home Input status bit is set to indicate the

axis has homed.

3. A Go (G) command is issued, which clears the Home Input status bit.

• Level Mode: In this mode, the Home Input status bit is set when the Home input is currently

active, and is cleared when it is inactive. Notice that the level is not latched, and that neither the

Index (Z) input nor the Arm Home (@) command affect this status bit.

Note: Revision 1 Quadrature modules require that the Arm Home (@) command be issued at

least once before the Home Input status bit works correctly. This anomaly has been corrected in

later revisions.

Notice that although the Home Input status bit ignores the Index (Z) input, the actual homing of

the axis still occurs when either the Home (H) or Index (Z) input goes inactive after both had been

active. However, this Home Input status bit mode is not intended to be used with the Index (Z)

input, and therefore it is recommended that the Index (Z) input be left disconnected and

configured as "active with no current" in the Configuration Word.

Example:

1. The Arm Home (@) command is issued. Without this command, the Actual Position will not

be homed on the falling edge of the Home input. However, this has no effect on the Home

Input status bit.

2. The Actual Position is homed because the Home input goes inactive. The Home Input

status bit is cleared to indicate that the Home input is now inactive. As noted above, this

example assumes that the Index (Z) input is always active.

See the Homing a Quadrature Axis topic for details on using this status bit to home an axis.

The RMC can be configured to automatically stop on the rising edge of this bit by using the Auto

Stop parameter, but this is rarely used in applications.

Bit 9 (MDT, SSI, Analog, Resolver or QUAD) - Integrator Windup

This bit is set when the drive due to the integrator exceeds ±20% or 80% of full drive, depending

on the setting of the Integrator Limit bit in the Configuration word.

1 2 ... 869 870 871 872 873 874 875 876 877 878 879 ... 950 951

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