IAI America RCP4W - Manual (Page 21)

1. Specifications Check
15
[5] Relation between Current Limit and Pressing Force
x SA5C
Pressing Force [N]
Current Limit Value [%] Ball Screw Lead
[mm] 20 30 40 50 60 70
5 42.3 63.4 84.5 105.6 126.8 147.9
10 38.2 47.8 57.3 66.9
SA5C Current Limit Value and Pressing Force
0
50
100
150
200
250
300
350
400
0% 10% 20% 30% 40% 50% 60% 70% 80%
Current Limit Value [%]
P
re
ss
in
g
Fo
rc
e
[N]
Lead 5
Lead 10
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.