-6-
No.D-
※
S-OMG0006-C
■
NOTE
○Follow the instructions given below when designing, selecting and handling the product.
"Cylinder" or "Actuator" indicates a cylinder, air gripper, rotary actuator, electrical actuator or
cylinder, etc.
●
Design and Selection
Product specifications
Pay attention to the length of time the product will operate at an intermediate stroke position.
When a product is placed at an intermediate stroke position, and a load is driven during the time when the piston
passes, the product will operate, but if the piston speed is too great, the operating time will be shortened, and the
load may not operate correctly.
The maximum piston speed is:
V [mm/s] =
Operating range of product [mm]
x 1000
Operating time of load [ms]
Take precautions when multiple actuators are used close together.
When using two or more actuators with auto switches in close proximity to each other, maintain a minimum
separation distance of at least 40 mm. (If the separation distance is specified for the actuator series, then use that
value). The products may malfunction due to magnetic field interference. Use of a magnetic screen plate (MU-S025)
or commercially available magnetic screening tape can reduce the interference of magnetic fields.
Provide sufficient space for maintenance.
When designing an application, allow sufficient clearance for maintenance and inspection.
Never mount the actuator with auto switch in a location that will be used as a footrest.
The product may be damaged if excessive force is applied by stepping or climbing onto it.
Design the circuit to prevent reverse current during open circuit conditions or when the product is forced
to operate for functional checks.
Reverse current can cause product damage or malfunction.
Limitations of the detection position
There will be mounting positions or surfaces where the product cannot be mounted due to physical interference (e.g.
rear side of the foot bracket), depending on the mounting conditions of the actuator. Select a product after confirming
that the product mounting position does not interfere with the mounting bracket (e.g. trunnion, reinforcement ring).
Wiring should be kept as short as possible.
Do not use a cable longer than 100 m. For long cable lengths, we recommend a ferrite core should be attached to
both ends of the cable, to reduce noise. A contact protection box (used for reed type auto switches) is not necessary
for solid state auto switches, because of the type of product construction.
For products, the sensor cable length should be 3 m or less.
If the sensor cable length is longer than 3 m, the product will not be CE compliant.
Do not use a load which generates a surge voltage.
When a load which generates a surge voltage is to be directly driven, operate such as a relay or solenoid, use a
product with built-in surge protection.
Pay attention to the internal voltage drop of the product.
In general, the internal voltage drop will be greater with a 2-lead wire solid state auto switch than with a reed type
auto switch. When products are connected in series, the voltage drop will be "n" times larger when "n" products are
connected. Even though a product may operate normally, the load may not operate. Note that a 12 VDC relay is not
applicable.
The product output will be unstable for 50 ms after power is supplied.
During the time after supplying power, the input device (e.g. PLC, relay) may consider the ON position as OFF
output or the OFF position as ON output. Please set up the application to consider the signals will be invalid within
50 ms after power is supplied.
Perform a similar setting when using the SMC AHC system (Auto Hand Changing system) MA series.
