6
Conformance to EC Directives
xv
•
Leave the label attached to the Unit when wiring. Removing the label may re-
sult in malfunction if foreign matter enters the Unit.
•
Remove the label after the completion of wiring to ensure proper heat dissipa-
tion. Leaving the label attached may result in malfunction.
•
Double-check all wiring and switch settings before turning ON the power sup-
ply. Incorrect wiring may result in burning.
•
Wire correctly. Incorrect wiring may result in burning.
•
Mount Units only after checking terminal blocks and connectors completely.
•
Be sure that the terminal blocks, Memory Units, expansion cables, and other
items with locking devices are properly locked into place. Improper locking
may result in malfunction.
•
Check the user program for proper execution before actually running it on the
Unit. Not checking the program may result in an unexpected operation.
•
Confirm that no adverse effect will occur in the system before attempting any of
the following. Not doing so may result in an unexpected operation.
•
Changing the operating mode of the PC.
•
Force-setting/force-resetting any bit in memory.
•
Changing the present value of any word or any set value in memory.
•
Resume operation only after transferring to the new CPU Unit the contents of
the DM Area, HR Area, and other data required for resuming operation. Not
doing so may result in an unexpected operation.
•
Do not pull on the cables or bend the cables beyond their natural limit. Doing
either of these may break the cables.
•
Do not place objects on top of the cables or other wiring lines. Doing so may
break the cables.
•
Use crimp terminals for wiring. Do not connect bare stranded wires directly to
terminals. Connection of bare stranded wires may result in burning.
•
When replacing parts, be sure to confirm that the rating of a new part is correct.
Not doing so may result in malfunction or burning.
•
Before touching a Unit, be sure to first touch a grounded metallic object in order
to discharge any static built-up. Not doing so may result in malfunction or dam-
age.
6
Conformance to EC Directives
Observe the following precautions when installing the C200HX/HG/HE PCs that
conform to the EC Directives.
1, 2, 3...
1. Since the C200HX/HG/HE PC is defined as an open type, be sure to install it
inside a panel.
2. Provide reinforced insulation or double insulation for the DC power source
connected to the DC I/O Unit and for a CPU Unit with a DC Power Supply
Unit.
3. The C200HX/HG/HE PC that conforms to the EC Directives also conforms,
as an individual unit, to the Common Emission Standard (EN50081-2) of the
EC Directives. When incorporated into a device, however, the C200HX/HG/
HE PC may not satisfy this Standard due to the noise produced by the con-
tact output when it switches on and off. In such a case, it will be necessary to
take countermeasures such as connecting a surge or arc killer, or providing
an external means of protection for the PC. The countermeasures taken to
satisfy the Standard vary depending on the load devices, wiring, machinery
configuration, etc. Described on page 137 are examples of countermea-
sures to be taken to reduce the noise.
