1756SC-OF8H

Overview

1756SC-OF8H is an Allen-Bradley analog output module with HART support, offering 8 high-precision voltage or current outputs for use in ControlLogix or ProcessLogix chassis.

Output Specifications

• Number of Outputs: 8 (voltage or current)

• Voltage Output Range: ±10.4 V

• Current Output Range: 0–21 mA

• Drive Capability:

• Current: 50–750 Ω

• Voltage: ≥2 kΩ

• Load Reactance:

• Current: 10 µH max

• Voltage: 1 µF max

Performance

• Resolution:

• Current: 15 bits (650 nA/bit)

• Voltage: 16 bits

• Data Format: IEEE 32-bit floating point

• Settling Time:

• Current (no HART): <23 ms

• Current (with HART): <37 ms

• Voltage: <8.5 ms

• Accuracy at 25 °C:

• Voltage: <0.1% of range

• Current: <0.15% of range

• Module Error (Full Temp. Range):

• Voltage: 0.15%

• Current (4–21 mA): 0.3%

• Temperature Drift:

• Offset: 100 µV/°C (voltage), 200 nA/°C (current)

• Gain: 20 ppm/°C (voltage), 35 ppm/°C (current)

• Calibration Interval: 12 months typical

Protection & Detection

• Open Circuit Detection: Current outputs only (≥0.1 mA)

• Overvoltage Protection: ±24 VDC

• Short Circuit Protection:

• Current: Limited to ≤21 mA

• Voltage: Limited to ≤35 mA

Power & Installation

• Chassis Compatibility: ControlLogix, ProcessLogix

• Power Consumption:

• 200 mA @ 5.1 V

• 230 mA @ 24 V

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