MicroLogix™ 1500 Programmable Controller Base Units 17
Publication 1764-IN001A-ML-P
Table 9 Input Specifications
Description 1764-24AWA 1764-24BWA and 1764-28BXB
Inputs 0 thru 7 Inputs 8 and Higher
On State Voltage
Range
79 to 132V ac 14 to 30.0 V dc at 30°C
(86°F)
14 to 26.4 V dc at 55°C
(131°F)
10 to 30.0 V dc at 30°C
(86°F)
10 to 26.4 V dc at 55°C
(131°F)
Off State Voltage
Range
0 to 20V ac 0 to 5V dc
Operating Frequency 47 Hz to 63 Hz 0 Hz to 20 KHz
(1764-24BWA)
0 Hz to 1 KHz
(1)
(1764-24BWA)
(1) Scan-time dependant.
On State Current:
• minimum
• nominal
• maximum
• 5.0 mA at 79V ac
• 12.0 mA at 120V ac
• 16.0 mA at 132V ac
• 2.5 mA at 14V dc
• 7.3 mA at 24V dc
• 12.0 mA at 30V dc
• 2.0 mA at 10V dc
• 8.9 mA at 24V dc
• 12.0 mA at 30V dc
Off State Leakage
Current
2.5 mA minimum 1.5 mA minimum
Nominal Impedance 12k ohms at 50 Hz
10k ohms at 60 Hz
3.3k ohms 2.7k ohms
Inrush Current (max.)
at 120V ac
250 mA Not Applicable Not Applicable
Table 10 Output Specifications
Specification 1764-24AWA/BWA 1764-28BXB
Current per Common 8A 8A
Current per Controller at 150V Maximum 24A 18A
at 240V Maximum 20A 18A
Table 11 Relay Contact Rating Table 1764-24AWA, -24BWA, -28BXB
Maximum Volts Amperes Amperes
Continuous
Voltamperes
Make Break Make Break
240V ac 7.5A 0.75A 2.5A 1800 VA 180 VA
120V ac 15A 1.5A
125V dc
0.22A
(1)
(1) For dc voltage applications, the make/break ampere rating for relay contacts can be determined by dividing
28 VA by the applied dc voltage. For example, 28 VA/48V dc = 0.58A. For dc voltage applications less than
48V, the make/break ratings for relay contacts cannot exceed 2A
1.0A 28 VA
24V dc
1.2A
(1)
2.0A 28 VA
Allen-Bradley Parts
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