Creative Conners Stagehand Pro 3, Справочное руководство

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Stagehand Pro 3 Reference Manual, 11-20
Page 12 of 56
Ultimate Limit
A pair of normally-closed (N.C.) switches can be wired in series to this pair of terminals to provide
protection against Forward and Reverse Limit switch failures. Typically, an Ultimate Limit switch is
physically positioned just beyond both the Forward and Reverse Limit switch. If an Ultimate Limit is
activated, the Stagehand will disallow any further movement until the limit is physically cleared or the
limit override button is pressed. In normal operation, there is never a reason to strike an Ultimate
Limit. An Ultimate Limit signal indicates an equipment problem with at least one of the primary limit
switches. The faulty equipment must be repaired, and the Ultimate Limit must be mechanically reset
before the Stagehand will allow motion.
Reverse Limit
A normally-closed (N.C.) switch can be wired to this pair of terminals. If the switch is activated, the
Stagehand will not allow further motion in the reverse direction until the limit is cleared either by
adjusting the switch mechanically or by moving in the forward direction far enough to clear the limit
switch.
Forward Limit
A normally-closed (N.C.) switch can be wired to this pair of terminals. If the switch is activated, the
Stagehand will not allow further motion in the forward direction until the limit is cleared either by
adjusting the switch mechanically or by moving in the reverse direction far enough to clear the limit
switch.