Allen-Bradley 1756-0F8 PLC Analog Output Module
Core Specifications
| Parameter |
Specification |
| Model |
1756-OF8 Series ControlLogix |
| Number of Channels |
8, Channel-Backplane Isolation |
| Output Type |
Voltage/Current Software Configurable |
| Voltage Range |
±10 VDC (0–10.4 V) |
| Current Range |
0–20 mA / 4–20 mA |
| Resolution |
15-bit (650 nA/bit @21mA; 320 µV/bit @10.4V) |
| Accuracy |
Full Scale ±0.05% |
| Isolation Withstand Voltage |
Continuous 250 VDC; 1350 VAC 1s Test |
| Backplane Power Consumption |
5.1V: 150 mA; 24V: 210 mA |
| Total Power Consumption |
5.8 W |
| Scan Time |
Integer: 8 ms; Floating Point: 12 ms |
| Setup Time |
<2 ms (Resistive Load) |
Protection Features
Short-circuit current limiting (≤21 mA), open-circuit detection (current only), overvoltage protection (±24 VDC)
Key Features
- Dual-mode output: Each channel independently configurable as voltage (±10V) or current (0/4–20mA)
- Electrical isolation: Channel isolation from backplane suppresses ground loops and industrial interference
- High precision: 15-bit resolution with 0.05% accuracy for precision control requirements
- Comprehensive protection: Short circuit, open circuit, and overvoltage protection
- Data format support: Integer (two's complement) and IEEE 32-bit floating-point, compatible with Logix programming
Physical Specifications
Net Weight: 0.14 kg (0.3 lbs) - module body only
Gross Weight: 0.25–0.35 kg/unit (including packaging and terminal blocks)
Dimensions: 118 × 138 × 30 mm (standard single-slot module)
Mounting: Single-slot ControlLogix rack with removable terminal block (RTB)
Terminal Types: 1756-TBNH / 1756-TBSH / 1756-TBCH
Environmental & Certification
Operating Temperature: 0–60°C
Relative Humidity: 5–95% (non-condensing)
Certifications: UL/CSA/CE certified
Status: Active (In Production)