Smart Failover Switch Switch
Updated 03/29/2016.
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Frequently Asked Questions
What's new in the product?
Where can I find a spec
sheet?
What are the switching times?
What are the serial port settings?
Can you develop custom firmware for my application?
Can you develop custom hardware for my application?
What are the current and voltage ratings?
Can I run this on 220-240VAC?
How do I use this with a UPS or generator?
How do I connect a
mixture of redundant and single-cord devices?
Can this unit switch out-of-phase inputs?
| Question: | What's new in the product? |
| Answer: | In this latest version, we've increased the hold-over time (time that the unit will operate without power) to over 2 seconds. We've added a power-save feature to the LCD and improved operation in brown-out conditions. It's still just as easy to use. There are no user settings. Just plug it in and let the microprocessor do the work. |
| Question: | What are the switching times? |
| Answer: | Switching from a failed input typically occurs in about 9ms. The exact switching time is determined by the nature of the input failure (ie. complete failure or brownout), but it won't exceed 15ms. There are also lockout and qualification times to prevent oscillation. Find complete specifications here. |
| Question: | What are the RS-232 port settings? |
| Answer: | The serial port is a DTE port, output only, for status monitoring. It operates at 9600 baud, N, 8, 1. |
| Question: | Can you develop custom hardware for my application? |
| Answer: | Gladly. We've done this for many customers. For larger orders (500+ units), we may be able to amortize the R&D expense. Contact |
| Question: | What are the current and voltage ratings? |
| Answer: | The output current rating is conservatively set at 12A. To improve long-term reliability, 20-30A components are used internally.. |
| Question: | Can I run out-of-phase circuits? |
| Answer: | Yes. The failover switch will handle any input phasing. 3 phase and split phase (+/-180 degree) circuits will work fine. |
| Question: | Can I run on 240VAC |
| Answer: | No. The unit is designed and rated only for 120VAC. Operation at higher voltages is unsafe.. |
| Question: | How do I connect a mix of redundant and non-redundant loads? |
| Answer: | Devices such as servers which have redundant power supplies should have one cord connected to the output of the failover switch, and the other to the most reliable outside source of power (other than the primary input). Devices without redundant inputs should connect to the output of the failover switch. |
| Question: | How do I connect a UPS or generator? |
| Answer: | Place the UPS in series with the primary input cord to the failover switch. In other words, connect the UPS between the primary cord and outside power. If you are using a generator with a generator transfer switch as backup, connect the generator or transfer switch output to the secondary input. Devices such as servers which have redundant power supplies should have one cord connected to the output of the transfer switch, and the other to the most reliable outside source of power (other than the primary input). |
If we haven't answered your questions here, please call (408) 330-5599 or
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