PLC Training Courses

Industrial Training - The Best for Less

PLC Training

Allen Bradley SLC 500 I/O Modules

Input/Output Modules

Allen-Bradley offers both discrete (digital) and analog Input and Output modules of various capabilities. The digital Input/Output modules feature a discrete signal that is either on or off, such as the input of limit switches or the output signal to a relay. Conversely, analog Input/Output modules convert voltage or current to point-in-time values via the processor, such as the input received by a thermocouple or the output signal of a pressure regulator. Virtually all SLC 500 Systems will incorporate the use of both discrete and analog Input and Output modules.

The SLC 500 System delineates between the various discrete modules by sorting them into two categories: Sinking and Sourcing. As an engineer designing your own system it will help you to understand the difference between these two options. Here is the definition as given by Allen-Bradley:

"Sinking and Sourcing are terms used to describe a current signal flow relationship between field input and output devices in a control system and their power supply.

  • Field devices connected to the positive side (+V) of the field power supply are sourcing field devices.
  • Field devices connected to the negative side (DC Common) of the field power supply are called sinking field devices.

To maintain electrical compatibility between field devices and the programmable controller system, this definition is extended to the input/output circuits on the discrete I/O modules.

  • Sourcing I/O circuits supply (source) current to the sinking field devices.
  • Sinking I/O circuits receive (sink) current from sourcing field devices.

Europe: DC sinking input and sourcing output module circuits are the commonly used options"

The following tables will help you to compare the Discrete Input/Output modules available in the Allen-Bradley SLC 500 System as well as the Analog Input/Output modules:

Discrete Sinking DC Input Modules

PART NUMBER1746-IB81746-IB161746-IB321746-IC161746-IH161746-ITB16
# OF INPUTS81632161616
POINTS/COMMON8168161616
VOLTAGE24V DC24V DC24V DC48V DC125V DC24V DC
OPERATING VOLTAGE RANGE10-30V DC10-30V DC15-30VDC (50°C)
15-26.4VDC (60°C)
30-60V DC (55°C)
30-55V DC (60°C)
90-146V DC10-30V DC
CURRENT AT 5V50mA50mA50mA50mA50mA50mA
CURRENT AT 24V0 mA0 mA0 mA0 mA0 mA0 mA
VOLTAGE, OFF-STATE INPUT, MAX.5.0V DC5.0V DC5.0V DC10.0V DC20.0V DC5.0V DC
NOMINAL INPUT CURRENT8 mA @ 24V DC8 mA @ 24V DC5.1 mA @ 24V DC4.1 mA @ 48V DC2.15 mA @ 125VDC
2.15 mA @ 132V DC
8 mA @ 24V DC
CURRENT, OFF-STATE INPUT, MAX.1 mA1 mA1.5 mA1.5 mA0.8 mA1.5 mA
SUGNAL ON DELAY, MAX.8 ms8 ms3 ms4 ms9 ms0.30 ms
SIGNAL OFF DELAY, MAX.8 ms8 ms3 ms4 ms9 ms0.50 ms

Discrete Sourcing DC Input Modules

PART NUMBER1746-IG161746-IV81746-IV161746-IV321746-ITV16
# OF INPUTS168163216
POINTS/COMMON16816816
VOLTAGE5V DC24V DC24V DC24V DC24V DC
OPERATING VOLTAGE RANGE4.5-5.5 V DC10-30V DC10-30V DC15-30V DC (50°C)
15-26.4V DC (60°C)
10-30V DC
CURRENT AT 5V140 mA50 mA85 mA50 mA85 mA
CURRENT AT 24V0 mA0mA0 mA0 mA0 mA
VOLTAGE, OFF-STATE INPUT, MAX.2-5.5V DC5.0V DC5.0V DC5.0V DC5.0V DC
NOMINAL INPUT CURRENT3.7 mA @ 5V DC8 mA @ 24V DC8 mA @ 24V DC5.1 mA @ 24V DC8 mA @ 24V DC
CURRENT, OFF-STATE INPUT, MAX.4.1 mA1 mA1 mA1.5 mA1.5 mA
SIGNAL ON  DELAY, MAX.0.25 ms8 ms8 ms3 ms0.30 ms
SIGNAL OFF DELAY, MAX.0.50 ms8 ms8 ms3 ms0.50 ms

Discrete Sinking DC Output Modules

PART NUMBER1746-OG161746-OV81746-OV161746-OV321746-OVP16
# OF OUTPUTS168163216
POINTS/COMMON168161616
VOLTAGE5V DC24V DC24V DC24V DC24V DC
OPERATING VOLTAGE RANGE4.5-5.5V DC10-50V DC10-50V DC5-50V DC20.4-26.4V DC
CURRENT @ 5V180 mA135 mA270 mA190 mA250 mA
CURRENT @ 24V0 mA0 mA0 mA0 mA0 mA
VOLTAGE DROP, ON-STATE OUTPUT, MAX.1.2 V @ 1.0 A1.2 V @ 0.5 A1.2V @0.5 A1.0 V @ 1.0 A
LOAD CURRENT, MIN.0.15 mA1 mA1 mA1 mA 1 mA
LEAKAGE CURRENT, OFF-STATE OUTPUT, MAX.0.1 mA1 mA1 mA1 mA1 mA
SIGNAL ON DELAY, MAX. (RESISTIVE LOAD)0.25 ms0.1 ms0.1 ms0.1 ms0.1 ms
SIGNAL OFF DELAY, MAX.
(RESISTIVE LOAD)
0.50 ms1.0 ms1.0 ms1.0 ms1.0 ms
CONTINUOUS CURRENT
PER MODULE
N/A8.0 A (30°C)
4.0 A (60°C)
8.0 A (30°C)
4.0 A (60°C)
8.0 A (0-60°C)6.4 A (0-60°C)
CONTIUOUS CURRENT
PER POINT
24 mA1.0 A (30°C)
0.5 A (60°C)
0.50 A (30°C)
0.25 A (60°C)
0.50 A (30°C)
0.25 A (60°C)
1.5 A (30°C)
1.0 A (60°C)
SURGE CURRENT PER POINT FOR 10 msN/A3.0 A3.0 A1.0 A (30°C)
1.0 A (60°C)
4.0 A+

Discrete Sourcing DC Output Modules

PART NUMBER1746-OB6EI1746-OB81746-OB161746-OB16E1746-OB321746-OB32E1746-OBP81746-OBP16
# OF OUTPUTS6 EP81616 EP3232 EP816
POINTS/
COMMON
IND. ISOLATED816161616416
VOLTAGE24V DC24V DC24V DC24V DC24V DC24V DC24V DC24V DC
OPERATING VOLTAGE RANGE10-30 V DC10-50V DC10-50V DC10-30V DC5-50V DC10-30V DC20.4-26.4V DC20.4-26.4V DC
CURRENT @ 5V46mA135 mA280 mA135 mA190 mA190 mA135 mA250 mA
CURRENT @ 24V0 mA0 mA0 mA0 mA0 mA0 mA0 mA0 mA
VOLTAGE DROP. ON-STATE OUTPUT, MAX.1.0V @
2.0 A
1.2V @
1.0 A
1.2V @
0.5A
1.0V @
0.5 A
1.2V @
0.5 A
1.2V @
0.5 A
1.0V @
2.0 A
1.0V @
1.0 A
LOAD CURRENT, MIN.1 mA1 mA1 mA1 mA1 mA1 mA1 mA1 mA
LEAKAGE CURRENT, OFF-STATE OUTPUT. MAX.1 mA §1 mA §1 mA §1 mA §1 mA 1 mA 1 mA §1 mA §
SIGNAL ON DELAY, MAX. (RESISTIVE LOAD)1.0 ms0.1 ms0.1 ms1.0 ms0.1 ms1.0 ms1.0 ms0.1 ms
SIGNAL OFF DELAY, MAX. (RESISTIVE LOAD)2.0 ms1.0 ms1.0 ms1.0 ms1.0 ms2.0 ms2.0 ms1.0 ms
CONTINUOUS CURRENT PER MODULES12.0 A
(0-60°C)
8.0 A (30°C)
4.0 A (60°C)
8.0 A (30°C)
4.0 A (60°C)
8.0 A
(0-60°C)
8.0 A
(0-60°C)
8.0 A
(0-60°C)
8.0 A
(0-60°C)
6.4 A
(0-60°C)
CONTINUOUS CURRENT PER POINT2.0 A
(0-60°C)
1.0 A (30°C)
0.50 A (60°C)
0.50 A (30°C)
0.25 A (60°)
1.0 A (30°)
0.50 A (60°C)
0.50 A (30°C)
0.25 A (60°C)
0.50 A (30°C)
0.25 A (60°C)
2.0 A
(0-60°C)
1.5 A (30°C)
1.0 A (60°C)
SURGE CURRENT PER POINT FOR 10 ms4.0 A3.0 A3.0 A2.0 A1.0 A (30°C)
1.0 A (60°C)
1.0 A (30°C)
1.0 A (60°C)
4.0 A4.0 A

Discrete AC Input Modules

PART NUMBER1746-IA41746-1A81746-IA161746-IM41746-IM81746-IM161746-IN16
# OF OUTPUTS4816481616
POINTS/
COMMON
4816481616
VOLTAGE100/120 VAC100/120 VAC100/120VAC200/240VAC200/240VAC200/240VAC24V AC/DC
OPERATING VOLTAGE RANGE85-132V @
47-63 HZ
85-132V @
47-63 HZ
85-132V @
47-63 HZ
170-265 V @
47-63 HZ
170-265 V @
47-63 HZ
170-265 V @
47-63 HZ
10-30VAC
10-30VDC
CURRENT @ 5V35  mA50 mA85 mA35 mA50 mA85 mA85 mA
CURRENT @ 24V0 mA0 mA0 mA0 mA0 mA0 mA0 mA
VOLTAGE, OFF-STATE INPUT, MAX.30 VAC30 VAC30 VAC50 VAC50 VAC50 VAC3.0 VDC
3.0 VAC
NOMINAL INPUT CURRENT12 mA @
120 VAC
12 mA @
120 VAC
12 mA @
120 VAC
12 mA @
240 VAC
12 mA @
240 VAC
12 mA @
240 VAC
8 mA @ 24 VDC
8 mA @ 24 VAC
CURRENT, OFF-STATE INPUT, MAX.2 mA2 mA2 mA2 mA2 mA2 mA1 mA (DC)
1 mA (AC)
INRUSH CURRENT, MAX.0.8 A0.8 A0.8 A1.6 A1.6 A1.6 A0.02 A
(AC ONLY)
INRUSH CURRENT TIME DURATION MAX.0.5 ms0.5 ms0.5 ms0.5 ms0.5 msO.5 ms--
SIGNAL ON DELAY, MAX.35 ms35 ms35 ms35 ms35 ms35 ms15 ms (DC)
25 ms (AC)
SIGNAL OFF DELAY, MAX.45 ms45 ms45 ms45 ms45 ms45 ms15 ms (DC)
25 ms (AC)

Discrete AC Output Modules

PART NUMBER1746-OA81746-OA161746-OAP12
# OF OUTPUTS81612
POINTS/COMMON486
VOLTAGE120/240  VAC120/240 VAC120/240 VAC
OPERATING VOLTAGE RANGE85-265 VAC @ 47-63Hz85-265 VAC @ 47-63Hz85-265 VAC @ 47-63Hz
CURRENT @ 5V185 mA370 mA370 mA
CURRENT @ 24V0 mA0 mA0 mA
VOLTAGE DROP, ON-STATE OUTPUT, MAX.1.50 V @ 1.0 A1.50 V @ 0.50 A1.2 V @ 2.0 A
LOAD CURRENT, MIN.10 mA10 mA10 mA
LEAKAGE CURRENT, OFF-STATE OUTPUT, MAX.2 mA2 mA2 mA
SURGE CURRENT PER POINT10.0 A for 25 ms10.0 A for 25 ms17.0 A for 25 ms
SIGNAL ON DELAY, MAX.
(RESISTIVE LOAD)
1 ms1 ms1 ms
SIGNAL OFF DELAY, MAX.
(RESISTIVE LOAD)
11 ms11 ms11 ms
CONTINUOUS CURRENT PER POINT1.0 A @ 30° C
0.50 A @ 60° C
0.50 A @ 30° C
0.25 A @ 60° C
2.0 A @ 30 ° C
1.25 A @ 55° C
1.0 A @ 60° C
CONTINUOUS CURRENT
PER MODULE
8.0 A @ 30° C
4.0 A @ 60° C
8.0 A @ 30° C
4.0 A @ 60° C
9.0 A @ 30° C
6.0 A @ 60° C

Analog Input/Output Modules

PART NUMBERFUNCTIONCURRENT/
VOLTAGE
I/O
 CHANNELS
DESCRIPTION
1746-NI4INPUT-20 TO + 20 mA
-10 TO + 10 VDC
4HIGH RESOLUTION INPUT
CURRENT/VOLTAGE
1746-NI8INPUT-20 TO + 20 mA
-10 TO + 10 VDC
8HIGH RESOLUTION INPUT
CURRENT/VOLTAGE
1746-NI16IINPUT-20 TO +20 mA16HIGH RESOLUTION INPUT
CURRENT
1746-NI16VINPUT-10 TO +10 VDC16HIGH RESOLUTION INPUT
VOLTAGE
1746-NIO4IINPUT/OUTPUT-20 TO + 20 mA or
-10 TO + 10 VDC INPUT;
0 TO 20 mA OUTPUT
2 INPUT;
2 OUTPUT
HIGH RESOLUTION INPUT
CURRENT/VOLTAGE;
CURRENT OUTPUT
1746-NIO4VINPUT/OUTPUT-20 TO + 20 mA or
-10 TO + 10 VDC INPUT; -10 TO +10 VDC OUTPUT
2 INPUT;
2 OUTPUT
HIGH RESOLUTION INPUT
CURRENT/VOLTAGE;
VOLTAGE OUTPUT
1746-FIO4IINPUT/OUTPUT0 TO 20 mA or
0 TO 10 VDC INPUT;
0 TO 20 mA OUTPUT
2 INPUT;
2 OUTPUT
FAST ANALOG INPUT;
ANALOG CURRENT OUTPUT
1746-FIO4VINPUT/OUTPUT0 TO 20 mA or
0 TO 10 VDC INPUT;
-10 TO +10 VDC OUTPUT
2 INPUT;
2 OUTPUT
FAST ANALOG INPUT;
ANALOG VOLTAGE OUTPUT
1746-NO4IOUTPUT0 TO 20 mA4CURRENT OUTPUT
1746-NO4VOUTPUT-10 TO +10 VDC4VOLTAGE OUTPUT
1746-NO8IOUTPUT0 TO 20 mA8CURRENT OUTPUT
1746-NO8VOUTPUT-10 TO +10 VDC8VOLTAGE OUTPUT
1746-NT4INPUT60 mA / 5V
40 mA /24V
4
+ CJC SENSOR
THERMOCOUPLE INPUT
TYPES J, K, T, E, R, S, B, N
1746-NT8INPUT120 mA/5 V
70 mA/24 V
8
+ CJC SENSOR
THERMOCOUPLE INPUT
TYPES J, K, T, E, R, S, B, N
1746-INT4INPUT110 mA/5 V
85 mA/24 V
4
+ CJC SENSOR
THERMOCOUPLE INPUT
TYPES J, K, T, E, R, S, B, N, C, D
1746-NR4INPUT50 mA/5 V
50 mA/24 V
4RTD/RESISTANCE INPUT
1746-NR8INPUT100 mA/5 V
55 mA/24 V
8RTD/RESISTANCEINPUT
1746-HSCEINPUTDIFF: 0 TO 5 VDC;
SE: ±5 VDC TO 30 VDC
1 SET ±A, ±B, ±Z DIFF; 5 VDC, 12 VDC, 24 VDC SEHIGH SPEED COUNTER WITH
DIFFERENTIAL (DIFF) OR
SINGLE-ENDED (SE) INPUTS
1746-HSCE2INPUT5 VDC TO 30 VDC2 SETS ±A, ±B,±Z; 2 ENCODERS; 4 PULSE DIFF OR SEHIGH SPEED COUNTER WITH DIFF, SE, OR ENCODER INPUTS
1746-BLMINPUT/OUTPUT110mA/5 V4 DIS/4 ANA  INPUT;
4 DIS/4 ANA  & 1 EXCITATION OUTPUT
BLOW MOLDING I/O WITH DISCRETE & ANALOG INPUTS/OUTPUTS
1746-BTMINPUT-50 TO +50 mV;
-100 TO + 100 mV
4BARREL TEMPERATURE MODULE
1746-HSTP1INPUT/OUTPUT200 mA/5 V5 VDC DIFF/12-24 VDC SE INPUT; DIGITAL OUTPUTSTEPPER CONTROL
MODULE
1746-HSRVINPUT/OUTPUT300 mA/5 V3 INPUT
1 OUTPUT
SERVO CONTROL
MODULE
1746-QVINPUT/OUTPUT250 mA/5 V1 INPUT
1 OUTPUT
OPEN-LOOP VELOCITY MODULE/HYDRAULICS
1746-QSINPUT/OUTPUT1000 mA/5 V
200 mA/24 V
4 INPUT
4 OUTPUT
CLOSED LOOP SERVO POSITIONING FOR SYNCHRONIZED AXES

Purchase Allen Bradley PLCs

Click for PLC Programming Training