Description

Foxboro FBM238 is a discrete interface module providing 24 digital inputs and 8 digital outputs for reliable process automation.

Input Characteristics

• Maximum applied voltage: 30 V DC

• On-state voltage: 15 to 30 V DC

• Off-state voltage: 0 to 5 V DC

• On-state current: 2.3 mA max at 30 V DC

• Source resistance limits:

• On-state: ≤ 1 kΩ at 15 V DC

• Off-state: ≥ 100 kΩ at 30 V DC

Communication

• Communicates with associated FCM or FCP via Fieldbus

Power Requirements

• Input voltage range: 24 V DC (+5%, –10%)

• Module consumption: 2.65 W max at 24 V DC

• Heat dissipation: 5.3 W max at 2 A total load, all inputs at 30 V DC

Operating Conditions

• Operating temperature: –20 to +70 °C (–4 to +158 °F)

• Relative humidity: 5–95% non-condensing

• Altitude: –300 to +3000 m (–1000 to +10,000 ft)

Storage Conditions

• Temperature: –40 to +70 °C (–40 to +158 °F)