Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual page 21

Application Precautions
I/O Connection and System Startup
Handling Precautions
xxii
Be sure that terminal blocks and connectors are connected in the specified
direction with the correct polarity. Not doing so may result in malfunction.
Leave the labels attached CPM1 or CPM2A Units when wiring to prevent wir-
ing cuttings from entering the Units.
Attach the labels supplied with CPM1A or CPM2C Units or provide other pro-
tective covers when wiring to prevent dust or wiring cuttings from entering the
Units.
Remove the labels after the completion of wiring to ensure proper heat dissipa-
tion. Leaving the labels attached may result in malfunction.
Use the connectors and wiring materials specified in the relevant manual(s).
Be sure to wire according to the relevant manual(s). Incorrect wiring may result
in burning.
Disconnect the functional ground terminal when performing withstand voltage
tests.
Always use the power supply voltages specified in the operation manual(s). An
incorrect voltage may result in malfunction or burning.
Take appropriate measures to ensure that the specified power with the rated
voltage and frequency is supplied. Be particularly careful in places where the
power supply is unstable.
Do not apply voltages to the input terminals in excess of the rated input voltage.
Excess voltages may result in burning.
Do not apply voltages or connect loads to the output terminals in excess of the
maximum switching capacity. Excess voltage or loads may result in burning.
Double-check all wiring and switch settings before turning ON the power sup-
ply. Incorrect wiring may result in burning.
Check the user program for proper execution before actually running it on the
Unit. Not checking the program may result in an unexpected operation.
When using, storing, or transporting the product, keep within the specifications
listed in the relevant manual(s).
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.
Before touching a Unit, be sure to first touch a grounded metallic object to dis-
charge any static built-up. Not doing so may result in malfunction or damage.
Do not touch the Expansion I/O Unit Connecting Cable while the power is be-
ing supplied to prevent any malfunction due to static electricity.
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. Doing so may break the cables.
When disposing of Units or other products, be sure to do so according to local
laws and regulations.
When using a Temperature Sensor Unit with a thermocouple input
(CPM1A-TS001/002, CPM2C-TS001), observe the following precautions:
With the CPM1A-TS001/002, do not remove the cold junction compensa-
tor attached at the time of delivery. If the cold junction compensator is
removed the Unit will not be able to measure temperatures correctly.
5