H5CR
H5CR
188
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.
#
Ifpoweris interruptedforless than10ms,operation willcontinue
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.
#
Dependingon switching frequency, current surgesmay 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 therecommended 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.
Self-diagnostic Function
#
Thefollowingdisplays 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
Correction Set
e1
CPU OFF Press
RESET key
No
change
e2
Memory
Setatthe
factory
Changing Set Values
#
TheTimerset value canbechanged while thetimer is operating,
so a highvalue canbe set temporarily toinactivate 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 ONunless
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.
#
Organicsolvents (suchas paint thinner), as wellas very acidicor
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-
plodeifincinerated.DisposeoftheDigital Timerasanon-com-
bustible item.
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
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