Catalogs > Automation Systems Catalog > Programmable Controllers > MicroLogix 1500 System > MicroLogix 1500 Base Units
MicroLogix 1500 Base Units
Specifications
Base Unit Dimensions
| Dimensions (HxWxD), Approx. |
| 132 x 168 x 87 mm (5.19 x 6.62 x 3.43 in.) |
Base Unit Input Specifications
| Description | 1764-24AWA | 1764-24BWA and 1764-28BXB | |
| Inputs 0 through 7 | Inputs 8 and Higher | ||
| On-State Voltage Range | 79…132V AC | 14…30.0V DC at 30 °C (86 °F) 14…26.4V DC at 55 0 °C (131 °F) |
10…30.0V DC at 30 °C (86 °F) 10…26.4V DC at 55 °C (131 °F) |
| Off-State Voltage Range | 0…20V AC | 0…5V DC | |
| Operating Frequency | 47…63 Hz | 0…20 kHz (1764-24BWA) | 0…1 kHz⋆ (1764-24BWA) |
| On-State Current: | |||
| 5.0 mA at 79V AC | 2.5 mA at 14V DC | 2.0 mA at 10V DC | |
| 12.0 mA at 120V AC | 7.3 mA at 24V DC | 8.9 mA at 24V DC | |
| 16.0 mA at 132V AC | 12.0 mA at 30V DC | 12.0 mA at 30V DC | |
| Off-State Leakage Current, Min. | 2.5 mA | 1.5 mA | |
| Impedance, Nom. | 12 kW at 50 Hz 10 kW at 60 Hz |
3.3 kW | 2.7 kW |
| Inrush Current at 120V AC, Max. | 250 mA | — | — |
| ⋆ Scan time dependent. | |||
Base Unit Relay Contact Specifications (1764-24AWA, -24BWA -28BXB)
| Relay Contact Ratings | ||
| At 240V AC maximum | 7.5A make, 0.75A break, 2.5A continuous | 1800 VA make, 180 VA break |
| At 120V AC maximum | 15A make, 1.5A break, 2.5A continuous | 1800 VA make, 180 VA break |
| At 125V DC maximum | 0.22A make, 0.22A break, 1.0A continuous | 28 VA make or break |
| At 24V DC maximum | 1.2A make, 1.2A break, 2.0A continuous | 28 VA make or break |
Base Unit FET Output Specifications (1764-28BXB)
| Description | General Operation (Outputs 2 through 7) |
High-speed Operation (Outputs 2 and 3 only)⋆ ‡ |
|
| User Supply Voltage | 20.4…26.4V DC | 20.4…26.4V DC | |
| On-State Voltage Drop | at maximum load current | 1V DC | — |
| at maximum surge current | 2.5V DC | — | |
| Current Rating per Output | maximum load | 1A @ 55 °C (131 °F) 1.5A @ 30 °C (86 °F) | 100 mA |
| minimum load | 1.0 mA | 10 mA | |
| maximum leakage | 1.0 mA | 1.0 mA | |
| Surge Current per Output | peak current | 4.0A | — |
| maximum surge duration | 10 ms | — | |
| maximum rate of repetition @ 30 °C (86 °F) | once every second | — | |
| maximum rate of repetition @ 55 °C (131 °F) | once every 2 seconds | — | |
| Current per Common, Max. Total | 6A | — | |
| Turn-on Time, Max. | 0.1 ms | 6 ms | |
| Turn-off Time, Max. | 1.0 ms | 18 ms | |
| Repeatability, Max. | — | 2 ms | |
| Drift, Max. | — | 1 ms per 5°C (1 ms per 9 °F) | |
| ⋆ Scan time dependent. ‡ Outputs 2 and 3 are designed to provide increased functionality over the other FET outputs (4 through 7). They may be used like the other FET outputs, but in addition, within a limited current range, they may be operated at a higher speed. Outputs 2 and 3 also provide a pulse train output (PTO) or pulse width modulation (PWM) output function. |
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