Section 4– Page 3
4.3 Function Selections
This section covers the various optional functions and their selection.
4.3.1 Limit Switch Enable
OFF = function DISABLED (default) (0)
ON = function ENABLED (1)
SW1/2 enables the limit switch stop function. This function is normally used on limited
travel linear slide axes for over travel limit protection. When the CW limit is activated
the velocity command in that direction is clamped immediately to zero speed and will
not allow any more motion in that direction. The motor will be commanded to
decelerate at full amplifier capacity without any deceleration ramps even if a ramp has
been set into the accel/decel potentiometer. Motion in the opposite direction of the
activated switch will not be impeded i.e., CCW motion is not impeded with the CW limit
activated and vice versa. The position is not locked and the motor may drift + or -
depending on the Offset adjustment. The motor is not disabled but has full torque
capability and is holding zero speed. If the holding limit switch is released while a
speed command is applied, the motor will accelerate to the commanded speed at full
torque with no ramping even if a ramp has been set into the Acc/Dec potentiometer.
4.3.2 Limit Switch Polarity
With the limit switch function enabled, the activating logic is determined by DIP switches
SW5/1 and /2 allowing a choice between normally-open or normally-closed limit
switches.
SW5/1
ON = N.O limit switch application.
CCW rotation is disabled with a 0V (amplifier common) signal on
terminal #43 (CCW LIM. SW.). CCW rotation is enabled with terminal
#43 open.
OFF = N.C. limit switch application
CCW rotation is disabled with terminal #43 open (CCW LIM. SW.).
CCW rotation is enabled with a +1 to +30 volt signal applied.
SW5/2
ON = N.O. limit switch application.
CW rotation is disabled with an 0V (amplifier common) signal on
terminal #45 (CW LIM. SW.). CW rotation is enabled with terminal
#45 open.
OFF = N.C. limit switch application.
CW rotation is disabled with terminal #45 open (CW LIM. SW.).
CW rotation is enabled with a +1 to +30 volt signal applied.
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