1771-IB AB Allen-Bradley PLC 8 Number of inputs Digital DC Input Module 1771 Series Original brand new

1771-IB AB PLC 8 Number of inputs Digital DC Input Module 1771 Series Original brand new

1771 Digital DC Input Modules

Cat. No.	Number of Inputs	Voltage Category		Operating Voltage	Signal Delay (typical)	Off-State Current, Max.	Wiring Arm	Backplane Current Load	Applications*
1771-IGD	16	5V DC	TTL	TTL-compatible 5.0…5.3V	<1 ms	—	1771-WH	130 mA	TTL interfaces, BCD interfaces encoders (A-B Bulletin 854C)
1771-IB	8	10…60V DC	sink (source load)	10…27V	on = 12 (±7) ms off = 20 (±7) ms	3.0 mA	1771-WA	74 mA	Compatible with source switching devices, including:  •dry-contact switches •electro-mechanical transmitters •panel switching devices, such as pushbutton and selector switches
1771-IC	8			42…56V	on = 15 (±7) ms off = 20 (±7) ms	3.7 mA	1771-WA	74 mA
1771-IH	8			24…50V	on = 15 (±7) ms off = 15 (±7) ms	0.7 mA	1771-WA	74 mA
1771-IT	8			12…27V	on = 0.6 (±0.2) ms off = 0.6 (±0.2) ms	1.3 mA	1771-WA	74 mA
1771-IBD	16			10…30V	on = 1.3 (±0.1) ms off = 1.3 (±0.1) ms	2.0 mA	1771-WH	130 mA
1771-ICD	16			20…60V	on = 6 (±2) ms off = 20 (±1) ms	1.2 mA	1771-WH	250 mA
1771-IBN	32 (4 sets of 8)			10…30V	on = 6 (±2) ms (digital filter) off = 6 (±2) ms	1.7 mA	1771-WN	280 mA
1771-IV	8		source (sink load)	12…24V	on = 15 (±7) ms off = 15 (±7) ms	3.0 mA	1771-WA	74 mA	Sink DC input signal termination
1771-IVN	32 (4 sets of 8)			10…30V	on = 6 (±2) ms  (digital filter) off = 6 (±2) ms	1.7 mA	1771-WN	280 mA
1771-IQ	8		sink or source load	5…30V	fast,on/off <1 ms  slow,on/off = 12 ms (-7, +14 ms)	—	1771-WC	150 mA	Source or sink input signal termination time-critical applications
1771-IQ16	16			10…32V	4 filter times  0, 1, 9, and 18 ms	2.0 mA	1771-WN	100 mA