FAQ No. FAQ02168
Question
The input is not entered into the
Programmable Controller when the switch is pressed. Why is this?
Answer
Programmable Controller DC inputs are generally 12 to 24 VDC at a few
milliamps. The rated current for general-purpose Basic Switches is 5 to 10
A. Contacts use silver. Sulfide gas and oxidizing gas in the atmosphere
form an insulating film on the silver contact surfaces, which results in
contact failures. Use Microload Basic Switches that use gold alloy
contacts.
Example: Z Basic Switch
Standard model: Z-15GW22-B,
Microload model:
Z-01HW22-B
Other Basic Switch
FAQs
 The load does not turn ON when the Switch is pressed. Why is this?
What causes contact welding and what can be done about it?
Are there Basic Switches available that can be used in locations subject to water?
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