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Timers
For contact input, use gold-plated contacts to make sure that the residual voltage is less than 1V when the contacts are closed.
6
5
4
3
2
1
Power
For transistor input, use transistors with the following specifi cations; VCE = 40V, VCES = 1V or less, IC = 50 mA or more, and ICBO = 50μA or less. The resistance
should be less than 1kΩ when the transistor is on. When the output transistor switches on, a signal is input to the timer.
5
4
3
2
1
Power
Inputs: GT3A-1, -2, -3
Transistor output equipment such as proximity switches and photoelectric switches can input signals if they are voltage/current output type, with power voltage
ranges from 18 to 30V and have1V. When the signal voltage switches from H to L, a signal is input to the timer
Transistor Output
Circuit
Transistor
5, 6, 7
Input
Terminal
2
Inputs: GT3A-4, -5, -6
The start input initiates a time-delay operation and controls
Start Input
output status.
When the reset input is activated, the time is reset, and
Reset Input
contacts return to original state.
The time-delay operation is suspended while the gate input
Gate Input
is on (pause).
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
Inputs Instructions, continued
7
8
9
10
11
6
7
8
9
10
11
USA: 800-262-IDEC
No-voltage contact inputs and NPN open collector transis-
tor inputs are applicable.
24V DC, 1mA maximum
Input response time: 50msec maximum
Canada: 888-317-IDEC
GT3 Series Instructions
841
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