1762-L24BWAR Allen-Bradley MicroLogix 1200 I/O Controller

1762-L24BWAR Allen-Bradley MicroLogix 1200 Embedded I/O Controller

The 1762-L24BWAR is an embedded I/O and input power controller for the MicroLogix 1200 line. It runs on 120–240 VAC input power. The unit offers 10 standard 24 VDC inputs, 4 fast 24 VDC inputs, and 10 relay outputs. Its footprint is about 3.5 x 4.33 x 3.43 inches. A dedicated RS-232 Programmer/HMI port handles DH full-duplex traffic. That port cannot initiate messages. Parameters stay fixed at the factory setting. The sensor supply COM ties internally to chassis ground. Use that supply for input devices only, never for output circuits. Total sensor current equals the sum of all connected device currents.

Technical Data

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Catalog number: 1762-L24BWAR
• UPC: 10612598207173
• Input power: 120–240 VAC
• Inputs: 10 x 24 VDC plus 4 fast 24 VDC
• Outputs: 10 relay
• Controller type: sink/source MicroLogix 1200
• Dimensions: 3.5 x 4.33 x 3.43 in
• Port: RS-232 Programmer/HMI, DH full-duplex only

Input Electrical Profile

• Inputs 0–3 on-state: min 2.5 mA at 14 VDC, nominal 7.3 mA at 24 VDC, max 12 mA at 30 VDC
• Inputs 4 and up on-state: min 2 mA at 10 VDC, nominal 8.9 mA at 24 VDC, max 12 mA at 30 VDC
• Inputs 0–3 frequency: 0–20 Hz
• Inputs 4 and up frequency: 0 Hz to 1 kHz, scan-time dependent
• Off-state voltage: 0–5 VDC
• Off-state leakage: 1.5 mA minimum
• Sensor supply COM: tied to chassis ground internally

Compatible Equipment

• MicroLogix 1200 control systems needing embedded I/O
• Panels with mixed relay output loads and 24 VDC sensors
• Legacy machines running DH full-duplex HMI links
• Obsolete control cabinets needing a drop-in 1762-L24BWAR replacement

Warranty, Lead Time, Shipping

• 12-month warranty from Oiltech Controls
• Dispatch in 24–28 hours after order confirmation
• Shipping by FedEx, UPS, or DHL
• Tracking number sent on dispatch

FAQ

Q: Can I use the sensor supply to power output devices?

A: No. The sensor COM ties to chassis ground internally. Use it only for switches and sensors. Power output circuits from a separate supply.

Q: Why do fast inputs miss pulses?

A: Inputs 4 and up reach 1 kHz only if scan time allows. Lengthen the scan or move pulses to a faster module. Check off-state leakage on long cables.

Q: Can I change the RS-232 port parameters?

A: No. The port is fixed to DH full-duplex. It cannot start messages. Plan your HMI around that limit.

Q: What load can the relay outputs switch?

A: Relay contacts handle mixed AC and DC loads. Verify your load VA against the contact rating. Add snubbers on inductive DC coils.

Q: Surplus or refurbished, which should I pick?

A: Surplus units come from pulled panels with low run hours. Refurbished units get bench test and I/O checks. Tell us your duty cycle. Our engineers match the option to your process risk.