h3fa-sbu Omron Corporation, h3fa-sbu Datasheet - Page 5

• Manufacturer Part Number: h3fa-sbu
• Description: Solid-state Timer
• Manufacturer: Omron Corporation

Operation
■ Timing Charts and External Connections
Note: Do not apply voltage to any terminals other than the power supply terminals. Otherwise, the internal circuits may be damaged.
H3FA-A, H3FA-B, H3FA-SA, H3FA-SB
Standard Operation (ON-delay operation)
When the power is turned ON and the set time has elapsed, an
output is produced. (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.)
When connecting an external resistor to the Timer, connect it
between terminals 21 and 23, and open terminals 21 and 22. Refer
to External Resistors and Operating Time (Reference Value) on page
7. When operating with an external reset input, short terminals 1 and
4. The Timer will start operating even if reset terminals 1 and 4 are
open when the power is turned ON.
In this case, the current flow is approximately 0.1 mA. If a contact is
used for control, use a contact with high contact reliability, If a
transistor is used for control, use an I
0.5 V or less.
Note: When using a 12/24 V DC-operated model with a 12 V DC
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.
power supply, short terminals 13 and 15.
SPST-NO contact output
(terminals 13 and 16)
Solid-state output
(terminals 1 and 10)
SPST-NC contact output
(terminals 9 and 12)
Power supply
(terminals 1 and 24)
(See note.)
Reset input
(terminals 1 and 4)
Set time
ON
10 ms
min.
Set time
CEO
OFF
of 10 μA and a V
ON
Short
Set time Set time
Open
Short
OFF
CE
(sat) of
Integration Operation
By opening the terminals connected to the internal variable resistor,
Timer operation can be interrupted to enable the Timer to perform
time integration operations. Interrupt Timer operation by opening
terminals 21 and 22 when using the internal variable resistor or
terminals 21 and 23 when using the external resistor. Timer
operation can be resumed by reconnecting the terminals.
Note: 1. Control output is provided when the set time has elapsed
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.
Power supply (terminals 1 and 24)
(See note.)
2. When using a 12/24 V DC-operated model with a 12 V DC
For internal variable resistor
(terminals 21 and 22)
(T
power supply, short terminals 13 and 15.
1
For external resistor
(terminals 21 and 23)
SPST-NO contact output
(terminals 13 and 16)
SPST-NC contact output
(terminals 9 and 12)
Solid-state output
(terminals 1 and 10)
+ T
Reset input
(terminals 1 and 4)
2
or T
3
+ T
4
).
Short Open
ON
T1
T2
10 ms
min.
Short
T3
Open
T4
OFF ON
H3FA
Short
Tn
5