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ControlLogix 8 Point Analog Output
SKU: 1756-OF8I
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Short Description
Description:
The 1756-OF8I is a high-performance 8-point analogue output module intended for ControlLogix® systems.
It sends precise voltage or current signals over individually isolated channels, making it perfect for operating analogue equipment in industrial automation.
Signal Types:
Voltage: ±10V, 0-10V, and 0-5V.
Current: 0-20 mA; 4-20 mA.
Resolution: 16 bits for excellent accuracy.
Isolation: Each channel is electrically isolated to improve safety and noise immunity.
Protection:
Open-circuit detection (in current mode).
Short circuit detection (voltage mode).
Provides overvoltage protection up to ±30V DC.
Data format is IEEE 32-bit floating point.
Conversion Method: R-Ladder DAC, monotonic, no missing codes.
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Electrical & Output Capabilities:
Channels: 8 individually isolated analogue outputs.
Signal Types:
Voltage: ±10V, 0–10V, 0–5V.
Current: 0–20 mA, 4–20 mA.
Resolution:
Voltage:
±10V → 0.32 mV/count.
0–10V → 0.16 mV/count.
0–5V → 0.08 mV/count.
Current:
0–20 mA → 0.32 µA/count.
Data Format: IEEE 32-bit floating point.
Conversion Method: R-Ladder DAC, monotonic with no missing codes.
Output Load Requirements:
Voltage mode: ≥1000 Ω.
Current mode: 0–1000 Ω.
Diagnostics & Protection:
Open-Circuit Detection: Available in current mode.
Short-Circuit Detection: Available in voltage mode.
Overvoltage Protection: ±30V DC.
Isolation Voltage:
250V continuous (channel-to-backplane and channel-to-channel).
Power & Thermal:
Backplane Current Draw:
200 mA @ 5.1V DC.
220–385 mA @ 24V DC (depending on load resistance).
Power Dissipation:
Voltage mode: 5.4 W.
Current mode:
250 Ω load → 5.4 W.
500 Ω → 5.8 W.
750 Ω → 6.5 W.
1000 Ω → 6.7 W.
Thermal Dissipation:
Up to 22.9 BTU/hr depending on load.
Environmental Ratings:
Operating Temperature: –20°C to +60°C.
Storage Temperature: –40°C to +85°C.
Humidity: 5% to 95% non-condensing.
Shock Resistance: IEC 60068-2-27 tested to 30G.