6Solid-state Timer H3FA
H3FA-AU, H3FA-BU, H3FA-SAU, H3FA-SBU
One-shot Output Operation
Turn ON the power and apply a start input (short terminals 6 and 1).
(Power turns ON when power terminals 1 and 24 are shorted or
when terminals 13 and 15 are shorted when using a 12/24 V DC-
operated model with a 12 V DC power supply.) An output is produced
immediately and is reset when the set time has elapsed.
If the reset input is applied (short terminals 4 and 1) with no start
input (open terminals 6 and 1) while the Timer is operating, the Timer
stops operating and the output is reset.
When operating with an external start or reset input, the current flow
from terminal 6 to terminal 1 (start input) or from terminal 4 to
terminal 1 (reset input) is approximately 0.1 mA. A highly reliable
contact is therefore recommended for the start and reset inputs.
Use an ICEO of 10 µA and a VCE (sat) of 0.5 V or less for transistor
control. When connecting an external resistor to the Timer, connect it
between terminals 21 and 23, and open terminals 21 and 22.
Note: 1. When using a 12/24 V DC-operated model with a 12 V DC
power supply, short terminals 13 and 15.
2. The start input is disabled during the time limit.
3. T denotes the set time. t1< T
Contact Output (Top view)
Solid-state Output (Top View)
When using the 12/24 V DC-operated model with a 24 V DC power
supply, open terminals 13 and 15.
OFF-delay Operation
Turn ON the power and apply a start input (short terminals 6 and 1).
(Power turns ON when power terminals 1 and 24 are shorted or
when terminals 13 and 15 are shorted when using a 12/24 V DC-
operated model with a 12 V DC power supply.) An output is produced
immediately. If the start input is applied constantly, however, the reset
input can be applied until the set time elapses to stop time-limit
operation. (An output is produced when the start input is applied
even when the constant reset input is ON prior to the start input.)
The time-limit operation starts when the reset input terminals are
opened, and the output is reset when the set time has elapsed.
When operating with an external start or reset input, the current flow
is approximately 0.1 mA. A highly reliable contact is therefore
recommended for the start and reset inputs. Use an ICEO of 10 µA
and a VCE (sat) of 0.5 V or less for transistor control.
Note: 1. When using a 12/24 V DC-operated model with a 12 V DC
power supply, short terminals 13 and 15.
2. T denotes the set time. t1, t2, and t3< T
Contact Output (Top view)
Solid-state Output (Top View)
When using the 12/24 V DC-operated model with a 24 V DC power
supply, open terminals 13 and 15.
ON
Short Open
TTT
t1
10ms
min.
(See
note 2.) 10ms
min.
Power supply
(terminals 1 and 24)
(See note 1.)
Start input
(terminals 1 and 6)
Reset input
(terminals 1 and 4)
SPST-NO contact output
(terminals 13 and 16)
SPST-NC contact output
(terminals 9 and 12)
Solid-state output
(terminals 1 and 10)
Contact output
(SPST-NC contact for
time-limit operation)
Power supply
(terminals 1 and 24)
(See note 1.)
Start input
(terminals 1 and 6)
Reset input
(terminals 1 and 4)
SPST-NO contact output
(terminals 13 and 16)
Solid-state output
(terminals 1 and 10)
SPST-NC contact output
(terminals 9 and 12)
ON
Short Open
TTT t1 t2 t3
