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H5AN
Connection of Reset and Gate Inputs
For reset input, connect a contact or an open collector type transis-
tor between terminals 8 and 9. The timer resets when contact is
made or when the transistor is ON. For gate inputs, connect a con-
tact or an open collector type transistor between terminals 8 and 10.
The timer stops when contact is marked or when the transistor is
ON.
Use a contact of high contact reliability, or an open collector type
transistor with characteristics: V
voltage) = 3 V max., I
= 50 mA min. and I
C
0.5 µA max.. Use of a gate input contact with minimum contact
bounce (chatter) is a must, since the contact bounce time will cause
an error in timer operating time.
When connecting a solid-state circuit not of the open collector type
to the gate or reset inputs as shown below, the voltage of the solid-
state circuit (+V) should be 13 to 30 V, and the V
tor should be less than 3 V (the current that flows from either termi-
nal 9 or 10 is approximately 10 mA). Moreover, it is essential that the
circuit be ON for gate or reset input, and OFF when there is no input.
= 20 V min., V
(residual
CEO
CE(S)
(leakage current) =
CBO
of the transis-
CE(S)
Connection of a Power Supply for Externally
Connected Components
The H5AN has a built-in power supply for externally connected com-
ponents such as sensors for gate or reset input, or loads connected
to the solid-state control output (12 VDC, 80 mA).
Power can be applied to the sensors and loads simultaneously.
Simultaneous Input to a Number of H5AN Tim-
ers with the Same Contact or the Same Open
Collector Transistor
A reset or gate input may be applied to two or more units of H5AN
with only one contact or transistor as shown below. In this case, cau-
tion is required as a large current flows into the transistor. (The cur-
rent that flows from H5AN is approximately 10 mA pre unit.)
H5AN
9
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