Communication Interface
Remote Contacts (IBM AS/400)
The remote contacts interface is a standard feature. It is provided through solid state relays with contacts through a DB9 male connector located on the back of the UPS. The following chart shows the signals and the connector pinout.
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1 | Fault Signal | Closed when fault |
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2 | UPS stop com- | Backup stop when the |
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| mon | level changes from |
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3 | UPS stop signal |
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| input | High (+3 to +15 V) |
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4 | Normal input | Closed with normal |
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| 4 | ||
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| power supply | supply power |
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5 | Signal common | Common signal return |
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6 | Bypass operation | Closed during bypass |
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7 | Battery voltage | Closed at voltage drop |
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| low |
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8 | UPS operation | Closed during inverter |
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| operation |
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9 | Power failure | Closed at power failure |
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| signal |
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| Voltage |
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| Current | ||||||
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| 48 VDC peak |
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| 100 mA peak | ||||||
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| 30 VAC rms |
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| 70 mA rms | ||||||
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| (42 VAC peak) |
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| (100 mA peak) | ||||||||
DB9 Male Connector Outline (facing connector)
26 | 1800 Series User Manual |
