IAI America ERC2 - Manual (Page 96)

6. Parameter Settings
77
(Home)
z Home return offset (No.22 OFST)
The controller is shipped from the factory with an optimal value set in parameter No. 22, so the distance from
each mechanical end to the home becomes uniform.
The minimum setting unit is “0.01 [mm].”
The home return offset can be adjusted in the following conditions:
[1] Want to align the actuator home and the system’s mechanical home after the actuator has been assembled
into the system
[2] Want to set a new home after reversing the factory-set home direction
[3] Want to eliminate a slight deviation generated after replacing the actuator
Caution: If the home return offset has been changed, the soft limit parameters must also be
adjusted accordingly.
z Zone boundary (1: No.1/2 ZONM/ZONL, 2: No.23/24 ZNM2/ZNL2)
These parameters set the zone in which the zone output signal (ZONE1 or ZONE2) turns ON.
The zone output signal turns ON when the current position is inside the negative (–) boundary and positive (+)
boundary settings.
For the ZONE1 signal, set the + boundary in parameter No. 1 and – boundary in parameter No. 2.
For the ZONE2 signal, set the + boundary in parameter No. 23 and – boundary in parameter No. 24.
The minimum setting unit is “0.01 [mm].”
Example) Use ZONE1 as an intermediate LS for a range of 100 to 200 mm, and ZONE2 for quick position
check covering a range of 270 to 275 mm, on an actuator having a 300-mm stroke.
Parameter No. 1 (+) 200 / Parameter No. 2 (–) 100
Parameter No. 23 (+) 275 / Parameter No. 24 (–) 270
ZONE1 turns ON ZONE2 turns ON