Communication Interfaces
Remote Contacts
The remote contacts interface is provided as a set of solid state relay switch contacts. The switches are available through a DB9 male connector on the rear of the UPS. The following chart shows the pin assignment for each signal.
Maximum current carrying capacity | DB9 Male Connector Outline | |
Of the switch | (Facing connector) | |
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Voltage | Current |
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48 Vdc Peak | 100 mA peak |
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30 Vac rms | 70 mA rms |
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(42 Vac peak) | (100 mA peak) |
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Pin | Signal Function | Logic | In the UPS |
1 | Fault Signal | Closed when fault detected |
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2 | UPS stop common | Backup stop when the level |
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3 | UPS stop signal input | changes from Low |
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High (+3 to +15 V) |
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4 | Normal input power supply | Closed with normal supply power |
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5 | Signal common | Common signal return |
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6 | Bypass operation | Closed during bypass operation |
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7 | Battery voltage drop | Closed at voltage drop |
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8 | UPS operation | Closed during inverter operation |
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9 | Power failure signal | Closed at power failure |
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Note Pin switches are shown in their inactive states. For example, if battery voltage is low, pin 7 will be connected to pin 5.
12 | 1600EP Series Instruction Manual |
