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1. Specifications Check
1.2.6 Current Limit Value and Pressing Force
[1] RA4C and RA4R Motor Type 35P
Current Limit
Value
Lead2.5 [N] Lead 5 [N] Lead 10 [N] Lead 16 [N]
20% 88 44 22 -
30% 133 66 33 21
40% 177 88 44 28
50% 221 111 55 35
60% 265 133 66 41
70% 310 155 77 48
Caution: (1) The relation of the current limit and the pressing force is a reference when
assuming the speed is 20mm/s.
(2) There is a little variance in the actual pressing force. The variance of the
pressing force becomes large when the current limit value is low.
(3) Use the product within the range in the graph for the current limit value.
Pressing force will not be stable if used below 20% (below 30% for Lead
16). There is even a case that it would not operate. An operation cannot be
made also when it is beyond 70%. Doing so may cause degradation in the
motor coil insulation by heat radiation, which results in shortening the
product life.
(4) For CON-system controllers such as PCON, when the approach speed to
the pressing start position (setting in the position table) is 20mm/s or less,
pressing will be performed with the approach speed In such a case also
the pressing force will be unstable. In such cases, check in advance that
the actuator can be used with no problem before omit using.
For SEL-system controllers, such as MSEL, press at the speed set by
PAPR instruction, regardless of the approach speed up to the pressing
start position.
Current Limit Value [%]
Lead 2.5
Lead 5
Lead 10
Lead 16
Pressing Force [N]
RA4C/R Current Limit Value and Pressing Force
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