xxv
Conformance to EC Directives 6
• Check the user program for proper execution before actually r unn ing it on
the Unit. Not checking the program may result in unexpected operation.
• Observe the following precautions when wiring the communications
cable.
• Separate the communic ations cables from the power lines or high-ten-
sion lines.
• Do not bend the co mmunications cables past their natural bending ra-
dius.
• Do not pull on the communications cables.
• Do not plac e heavy objects on top of the communications cables.
• Always lay communications cable inside ducts.
• Use appropr iate communications cables.
• Before touching a Unit, be su re to first touch a grounded metallic object in
order to discharge any static build-up. Not doing so may result in malfunc-
tion or damage.
• Confir m that no adverse effect will occur in the syste m before attempting
any of the following. Not doing so may result in an unexpected operation.
• Changing the ope rating mo de of the P LC (includi ng the se tting of th e
startup operation mode).
• Force-setting/force-resetting a ny bit in memory.
• Changing t he present value of any word or any set value in memory.
6 Conformance to EC Directives
6-1 Applicable Directives
•EMC Directives
• Low Voltage Directive
6-2 Concepts
EMC Directives
OMRON devices that comply with EC Directives also conform to the related
EMC standards so that they can be more easily built into ot her d evices or th e
overall machine. The actual products have been checked for conformity to
EMC standards (see the following note). Whether the products conform to the
standards in the system used by the customer, however, must be checked by
the customer.
EMC-related performance of the OMRON devices that comply with EC Di re c-
tives will vary depending on the configuration, wiring, and other condi tions of
the equipment or control panel on which the OMRON devices are installed.
The customer must, therefore, perform the final check to confirm that devices
and the overall machine conform to EMC standards.
Note Applicable EMS (Electromagnetic Susceptibility) a nd EMI (Electromagnetic
Interference) Standards in the EMC (Electromagnetic Compatibility) stan-
dards are as follows:
Unit/Board EMS EMI
CS1W-ETN21 EN61000-6-2 EN61000-6-4
(Radiated emission: 10-m
regulations)
CJ1W-ETN21