IAI America SCON-C - Manual (Page 205)

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Appendix
 Overrun-sensor input polarity
The overtravel detection sensor is not included in the standard specification, but it can be installed as an option.
This parameter is set properly prior to the shipment according to the customer’s specification and thus normally it
need not be changed, but if the customer wishes to change the mode after the shipment, change the value of
parameter No. 19.
Definition of settings: 0 (Standard specification without sensor)
1 (Use the overtravel detection sensor based on contact-a sensor polarity)
2 (Use the overtravel detection sensor based on contact-b sensor polarity)
 Creep-sensor input polarity
The travel speed of home return is normally set to a low level, or 20 mm/s to be specific.
Therefore, an actuator with a long stroke will take a longer time to complete home return if the actuator was
away from the home when the power was cut off.
To save time in this situation, an optional creep sensor is available.
The actuator moves at the creep speed (100 mm/s or below) until a creep sensor signal is detected, upon which
the actuator will decelerate to the home return speed (20 mm/s).
This parameter is set properly prior to the shipment according to the customer’s specification and thus normally it
need not be changed, but if the customer wishes to change the mode after the shipment, change the value of
parameter No. 20.
Definition of settings: 0 (Standard specification without sensor)
1 (Creep sensor used based on contact-a sensor polarity)
2 (Creep sensor used based on contact-b sensor polarity)
 Dynamic brake
This parameter defines whether the dynamic brake is enabled or disabled while the actuator is at standstill.
The factory setting is “1 (Enable).”
Normally this parameter need not be changed, but there are situations where the actuator with a short ball screw
lead does not move smoothly, such as when the actuator is moved by hand with the servo turned off.
In these situations, changing the value of parameter No. 14 to “0 (Disable)” will release the dynamic brake and
allow the actuator to move more smoothly.
Caution: Before returning to normal operation, be sure to reset this parameter to “1 (Enable).”
Mechanical end
Home return speed
Creep sensor
Creep speed
Position at which
the power is input
The actuator starts to decelerate upon
detection of a creep sensor signal.