Products Description
| Company Information | |||
| [email protected] | |||
| Mobile | +8613950166376 | ||
| +8613950166376 | |||
| 13950166376 |
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Allen‑Bradley 1756‑OX81 ControlLogix Digital Relay Output Module |
| Module Type | Isolated digital relay output module (8 points) |
| Series | ControlLogix 1756 I/O family |
| Number of Outputs | 8 relay output channels (isolated) |
| Output Type | Electromechanical relay (normally open / normally closed depending on model wiring) |
| Contact Voltage Range | Typically 5 – 250 VAC / 5 – 125 VDC (general relay rating – datasheets required for precise values) |
| Contact Current Rating | ~2 A per point (common for ControlLogix relay outputs) |
| Isolation Voltage | ~250 V continuous (relay outputs to backplane) |
| Backplane Current (5.1 VDC) | ~200–300 mA (typical for discrete relay modules) |
| Backplane Current (24 VDC) | ~2–3 mA (typical) |
| Power Dissipation | ~3–5 W (module dependent on load switching activity) |
| Output Response | Relay operate/release times ~5–15 ms typical (varies with load) |
| Operating Temperature Range | 0 °C to 60 °C (typical ControlLogix spec) |
| Storage Temperature Range | –40 °C to 85 °C (typical) |
| Relative Humidity (Non‑condensing) | 5 % to 95 % (typical) |
| Connection Type | Removable terminal block (e.g., 1756‑TBCH / 1756‑TBSH) |
| Mounting | Installed in ControlLogix chassis slot |
| Dimensions (H × W × D) | ~300 mm × 38.1 mm × 111.25 mm (standard 1756 module footprint) |
| Weight | ~0.35–0.45 kg (approximate typical) |
FAQ
FAQ
Q1: What is the main function of the 1756‑OX81 module?
It provides eight isolated electromechanical relay outputs for switching AC or DC field devices in a ControlLogix system.
Q2: How many output channels does it have?
It has 8 relay output channels.
Q3: What types of loads can the relays switch?
The module can switch a wide range of loads up to typical industrial control voltages (e.g., AC and DC).
Q4: Are the outputs isolated?
Yes, outputs are isolated from the backplane and other channels to improve noise immunity and safety.
Q5: How much current can each relay contact handle?
Each output relay can typically handle around 2 A per point.
Q6: Does the module draw power from the chassis backplane?
Yes — like other ControlLogix I/O modules, it uses backplane power.
Q7: What are the environmental operating limits?
It operates between 0 °C and 60 °C and can be stored from –40 °C to 85 °C with up to 95 % non‑condensing humidity.
Q8: What are the typical size and weight of the module?
The module’s dimensions follow the standard 1756 I/O footprint (about 300 mm × 38.1 mm × 111.25 mm) and weighs roughly 0.35–0.45 kg.
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Packing & Delivery
We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.
For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.
Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.
