8
Glossary
Ambient Operating Temperature
Theambient temperatureat whichadevicecanbeusedinthecon-
tinuously operated state.
Ambient Storage Temperature
Theambienttemperatureatwhichadevice,without powerapplied,
maybestoressafely.
Automatic Reset
To automatically return the timer to the “0” state after the lapse of
given time.
Dielectric Strength
The maximum voltage a dielectric can withstand without rupturing.
DOWN Display Digital Timer
Thetimerwhosedisplayprogressesindescendingsequence(from
thesetvalueto0).
Electrical Reset/External Reset
To reset timer by applying a required voltage to the reset circuit.
Electrical Life Expectancy
A life expectancy of a timer when the control output of the timer is
operated to switch the specified voltage/current load connected to
the control output.
Holding Time
Theperiodoftimefromthecompletionofthetime-limit operationto
the start of the reset operation.
Humidity
Theambient humidity at whicha devicecan be usedin thecontinu-
ously operated state.
Instantaneous Contact
The contact that performs instantaneous operation.
Instantaneous Operation
The operation to place the output in the ON or OFF state upon ap-
plication of the required voltage to the operating circuit.
Insulation Resistance
Theresistanceofferedbyaninsulatingmaterialtotheflowofcurrent
resulting from an impressed DC voltage.
Integrating Operation
The operation to obtain an output when the sum of the operating
times stopped or released by gate signals coincides with the set
time.
Malfunction Durability Shock
The threshold of shock beyond which a device can no longer oper-
ate properly by satisfying the prescribed ratings.
Malfunction Durability Vibration
Thethreshold of vibrationbeyond whichadevice cannolongerop-
erate properly by satisfying the prescribed ratings.
Manual Reset
To mechanically reset the timer by manual operation.
Mechanical Durability Shock
Thethresholdofshockbeyondwhichanabnormalityisexpectedto
occur in the appearance or function of a device.
Mechanical Durability Vibration
Thethresholdofvibrationbeyondwhichanabnormalityisexpected
to occur in the appearance or function of a device.
Mechanical Life Expectancy
A life expectancy of a timer when the control output of the timer is
operated under no load condition.
OFF-delay Timer
An output signal is generated upon application of a voltage to the
operating circuit. The output signal is removed after the lapse of a
givenpresettimefromtheinterruptionofthevoltagebeingsupplied
to theoperating circuit. The timer remains in the OFFstate until the
re-application of the voltage to the operating circuit.
This timer is also available in two types; one with a power supply
also serving as an operating circuit, and the other with separate
power supply and operating circuit. With the former type, restric-
tions are placed on the available types, operate time, etc.
(a) When the operating circuit is a power source
(b) When the operating circuit is an input signal source
T
T
OFF Time
The period of time from the start of the timer’s reset operation until
the application of a required voltage to the operating circuit.
OFF Time Characteristic
A change in operating time when the operate time in a given OFF
time and the OFF time are changed.
Formula for calculation:
OFF time characteristic
=!x 100 (%)
TM x 3 -- TM3
TMs
where,
TM3: Average value of operating times measured during the
OFF time of 1 second.
TM x 3: Average value of operating times measured during the
OFFtimewhichcausesthemaximumdeviation fromTM3
which the OFF time range of 1 hour from the specified re-
setting time.
TMs: Maximum scale time
ON-delay Timer
An output signal is generated after the lapse of a given preset time
from the application of voltage to the operating circuit.
The output signal is held until the operating circuit is turned off, and
is removed upon turning off the operating circuit, causing the timer
to return to its operable state.
This timer is available in two types; one with a power supply also
serving as an operating circuit, and the other, with separate power
supply and operating circuit.
Inthecaseofmotortimers,thelattertypeprovidesanhigherrepeat
accuracy.
(a) When the operating circuit is a power source
(b) When the operating circuit is an input signal source
T
T
