Allen-Bradley 1771-CFM Configurable Flowmeter Module

Overview:

• Versatile I/O module for flow measurement
• Provides four input channels for connecting flowmeters
• Offers various configuration options for different measurement needs

Technical Specifications:

• Number of Input Channels: 4
• Module Location: 1771-A1B, A2B, A3B, A3B1, A4B (series A and B) I/O chassis, 1771-AM1, AM2 I/O chassis with integral power supply, adapter
• Maximum Count Value: 0-9,999,999 (programmable)
• BTW Processing Time (worst case): 5.5ms on a configuration change
• Module Scan Time: 1.3-5ms (depending on configuration and frequency)
• Maximum Input Frequency: 100kHz flowmeter input (120kHz gate input overrange at 100kHz)
• Inputs per Channel: 2-flowmeter input, 1-gate input (Totalizer and Nonresettable Totalizer modes)
• Flowmeter(FO-F3) Input Voltage: 5-30V DC (TTL compatible)
• Flowmeter(F0-F3) Input Impedance: 5K2±30% resistive
• Gate(GO-G3) Voltage: 5-12 and 12-30V DC
• Gate(GO-G3) Current: 22mA maximum
• Number of Outputs: 4
• Maximum Output Off-state Leakage Current: Less than 300µA
• Maximum On-state Voltage Drop: 0.6 x current
• Output Control: Any number of outputs assignable to any of 4 channels, one "turn-on" value and one "turn-off" value per output
• Output Voltage: 5 to 30V DC, customer supplied
• Output Current: 1A per channel sourced out of module
• Output Switching Time: Outputs triggered by Total: turn ON 100µs; turn OFF <100µs, all other turn ON and OFF times <1ms
• Filtering (F0-F3 inputs): Jumper selectable high-speed or low-pass filter (filter below 70Hz)
• Debouncing (G0-G3 inputs): Software selectable 1s (approximate) between transitions with no minimum pulse width (Totalizer and Nonresettable Totalizer modes only)
• Module DC Source Output: 24V DC; 12mA; ripple: 5%; noise: 240mV peak-to-peak
• Backplane Current: 0.8A maximum, 5V DC
• Customer Supply: 5 to 30V DC