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2.
Always use the ZEN within the rated ambient operating temperature and humidity. The rated ambient operating
temperature is 0 to 55°C for LCD-type CPU Units and –25 to 55°C for LED-type CPU Units. If the ZEN is used
near sources of heat, such as a power supply, the internal temperature of the ZEN may increase, lowering the
durability of the ZEN.
3.
Discharge static electricity from your body, e.g., by touching a grounded metal plate, before touching any Unit.
4.
The exterior of the Units will be damaged if it comes into contact with organic solvents (e.g., benzene or paint
thinner), strong alkalies, or strong acids. Never allow such substances to come into contact with the Units.
5.
Do not apply voltages exceeding the rated voltages. Internal elements may be destroyed.
6.
Short failures or open failures may result from the destruction of output elements. Do not use loads that exceed
the rated output current.
Maintenance
When replacing a CPU Unit, transfer to the new Unit and confirm all settings for clock data, internal holding bits,
holding timers, and counters before starting operation again.
Transportation and Storage
1.
Use special packaging boxes when transporting the ZEN and do not subject it to excessive shock or vibration
or drop it during shipment.
Store the ZEN at an ambient temperature of −40 to 75°C for LED-type CPU Units and −20 to 75°C for all other
2.
types of CPU Units. If the ZEN has been stored at −10°C or lower, allow it to stand at room temperature for 3
hours or longer before turning ON the power supply.
Precautions
xi
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