16

Solid-state Timer

H3BA-N

■ Input Connections

The inputs of the H3BA-N are no-voltage (short circuit or open) inputs.

No-voltage Inputs

No-voltage Input Signal Levels

No-contact

input

Contact

input

1. Short-circuit level

Transistor ON

Residual voltage: 1 V max.

Impedance when ON: 1 k

Ω max.

2. Open level

Transistor OFF

Impedance when OFF: 200 k

Ω min.

Use contacts which can adequately

switch 0.1 mA at 5 V

No-contact Input

(Connection to NPN open

collector output sensor.)

Contact Input

No-contact Input

(Connection to a voltage

output sensor.)

12 to 24 VDC

(sensor power supply)

Sensor

Timer

Start/reset/

gate

Input (0 V)

(No. 2 pin)

Operates with transistor ON

+

−

DC power

supply

Timer

Start/reset/

gate

Input (0 V)

(No. 2 pin)

Operates with relay ON

12 to 24 VDC

(sensor power supply)

Sensor

Timer

Start/reset/

gate

Input (0 V)

(No. 2 pin)

Operates with transistor ON

+

−

DC power

supply