Omron H3CR-A Manual page 188

H5CR
Precautions
Power Supplies
#
The input circuit is not insulated from the power supply circuit.
The internal circuit might be damaged by a surrounding AC
circuit, so use an insulated AC power supply with equipment
connected to the input circuit.
#
If power is interrupted for less than 10 ms, operation will continue
normally. If power is interrupted for between 10 and 500 ms,
operation will be inconsistent, and timing may stop or reset,
depending on the mode.
#
Connect the power supply voltage through a relay or switch in
such a way that the voltage reaches a fixed value immediately.
#
Depending on switching frequency, current surges may degrade
relay contacts; relays with a capacity greater than 10 A are
recommended.
Input and Output
#
Do not use external sources to increase the voltage of input
signals (control signal, reset, gate, and key protection).
#
Be sure that the load of the control output (contact, transistor) is
less than the maximum values indicated in the specifications. If
the output load exceeds the recommended value, the lifespan of
the contact output type will be shortened dramatically, and the
transistor of the transistor output type will be damaged.
#
The transistor output is insulated from the internal circuitry by a
photocoupler, so either NPN or PNP transistors can be used.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. L35-E1-3A
188
Self-diagnostic Function
#
The following displays will appear if an error occurs. The present
value and output enter the same status as after pressing the
RESET key.
Display Error Output
status
CPU OFF
e1
Memory
e2
Changing Set Values
#
The Timer set value can be changed while the timer is operating,
so a high value can be set temporarily to inactivate the timer, or a
low value can be set to activate the timer more quickly. (If the set
value is changed accidentally during operation, the timer might
be activated. Therefore, turn the key protection input ON unless
the set value is being changed.)
#
To avoid changing the output when changing the set value, it is
recommended to begin changing the set value by entering a
large number in the higher digit.
Operating Environment
#
When using the Timer in an area with much electronic noise,
separate the Timer, wiring, and the equipment which generates
the input signals as far as possible from the noise sources. It is
also recommended to shield the input signal wiring to prevent
electronic interference.
#
Organic solvents (such as paint thinner), as well as very acidic or
basic solutions might damage the outer casing of the Timer.
Other
#
When the timer is installed in a control box and tests are
conducted which may damage the Timer's internal circuitry (for
example, a test measuring the maximum voltage difference
between the control circuit and metal components), remove the
Timer from the control box or short circuit the terminals.
Caution
This product contains a lithium battery. Lithium batteries ex-
plode if incinerated. Dispose of the Digital Timer as a non-com-
bustible item.
H5CR
Correction Set
Press No
RESET key change
Set at the
factory