Diagnostic Specifications - 1756-OA8D
| Attribute | 1756-OA8D |
| Short trip, min | 12 A for 500 µs |
| No load | Off-state detection only |
| Output verification | On-state detection only |
| Pulse test | Configurable maximum width and max time delay from zero cross |
| Field power loss (zero cross) | Detects at 25V peak min (firmware phase locked loop) |
| Time stamp of diagnostics | ±1 ms |
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Technical Specifications - 1756-OA8D
| Attribute | 1756-OA8D |
| Outputs | 8 diagnostic, electronic fusing (4 points/group) |
| Voltage category | 120V AC 50/60 Hz |
| Operating voltage range(1) | 74…132V AC 47…63 Hz |
| Output delay time | |
| Off to On | 9.3 ms @ 60 Hz 11 ms @ 50 Hz |
| On to Off | 9.3 ms @ 60 Hz 11 ms @ 50 Hz |
| Current draw @ 5.1V | 175 mA |
| Current draw @ 24V | 250 mA |
| Total backplane power | 6.89 W |
| Power dissipation, max | 5.3 W @ 60 °C (140 °F) |
| Thermal dissipation | 18.0 BTU/hr |
| Off-state leakage current, max | 3 mA per point |
| On-state voltage drop, max | 2.5V peak @ 0.5 A 3V peak @ 1 A |
| Current per point, max | 1 A @ 30 °C (86 °F) linear derating 0.5 A @ 60 °C (140 °F) linear derating |
| Current per module, max | 8 A @ 30 °C (86 °F) linear derating 4 A @ 60 °C (140 °F) linear derating |
| Surge current per point | 8 A for 43 ms per point, repeatable every 2 s @ 30 °C (86 °F) 5 A for 43 ms per point, repeatable every 1 s @ 60 °C (140 °F) |
| Load current, min | 10 mA per point |
Product Photos
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