IAI America ERC3 - Manual (Page 67)

Chapter 1 Specifications Check
1.2 Specifications 1.2.1
Actuator
57
• RA6C
Pressing Force [N]
Current Limit Value [%]
Ball Screw Lead [mm]
20 30 40 50 60 70
4 312 469 625 781 937 1094
8 156 234 312 391 469 547
16 78 117 156 195 234 273
24 52 78 104 130 156 182
RA6C Current Limit Values and Pressing Force
Pressing Force [N]
Current Limit Value [%]
0
200
400
600
800
1000
1200
0 10 20 30 40 50 60 70 80
Lead 8
Lead 4 Lead 4
Lead 16 Lead 16
Lead 24 Lead 24
Caution: (1) The relation of the current limit and the pressing force is a reference
assuming when the speed is 20mm/s.
(2) There will be a little variance in the actual pressing force. If the value of
current limit is small, the variance for the pressing force becomes big.
(3) Use the product with the current limit within the range specified in the
graph. If used below 20%, the pressing force would not be stable. An
operation may not be made in some cases. An operation cannot be made
also when it is beyond 70%. If use in such a condition, it may extremely
shorten the product life by the degradation of insulator in the motor coil due
to heat generation.
(4) When the approaching speed (setting in the position table) to the pressing
start position is 20mm/s or less, the pressing operation will be made with
the approaching speed. In this case, also, the pressing force would not be
stable. In such cased, check in advance that the actuator can be used with
no problem before start using.