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Configuring a Allen-Bradley SLC 500 PLC

The Allen-Bradley SLC 500 System is a modular, small chassis-based class of programmable controllers integrating discrete, analog, and specialty I/O and peripheral devices in stand-alone electronics cabinets.

By EngNet Engineering Network

The System has become the choice of manufacturing engineers worldwide because it is the industry standard for reliability and cost effectiveness. Consider these features that make the SLC 500 System the option you should consider:

  • Powerful - the SLC 500 System offers programmable controllers that are well equipped to handle a broad range of applications from small, one machine processes to high speed assembly operations, and all points in between.
  • Modular – the System can be configured to your precise needs today, yet is totally expandable and adaptable to future changes. Power supplies, memory capabilities, the number and type of input and output points, and the various communication links required are all easily included in the System to satisfy virtually every situation.
  • Advanced Instruction Capability – indirect addressing, high level math capabilities, and compute instructions are a feature of the System.
  • Communication versatility – options include on-board Ethernet, DH+, DH-485, ControlNet, DeviceNet, and Remote Input/Output.
  • Numerous I/O Options – modules are available to fulfill every conceivable need, from both discrete and analog I/O to temperature signals to a wide array of third-party specialty modules compatible with the System.
  • Industrial Use Design – the SLC 500 System is engineered to withstand the extremes encountered in industrial environments, such as excessive vibration, temperature fluctuations, and even electrical noise and interference.
  • Windows Software – RSLogix 500 programming software is an Allen-Bradley/Rockwell Automation exclusive product designed to maximize productivity by simplifying program development and/or troubleshooting. The RSLogix 500 ladder logic programming includes flexible editors, point-and-click I/O configuration, and a powerful database editor.

The SLC 500 System can be configured with up to 64 K of data/program memory and literally 100s of types of both discrete and analog I/O modules, making it the system of choice for everything from very basic to extremely intricate industrial applications. Minimum SLC 500 Systems require a processor module, and I/O modules in a single chassis with a power supply. Advanced local Systems can be created, using from one to three local chassis and up to 30 I/O and/or communication modules. More complex Systems are created using I/O across networks distributed in remote locations and connected via multiple I/O links.

Creating a SLC 500 System may seem to be a daunting task at first, but it is really a very straightforward proposition. The first step is to examine the manufacturing blueprints, and all related machine and electrical functions requiring an input /output. Plot the entire operation in a spreadsheet to determine the exact number of I/O points that will be required as well as the amount of memory needed to complete the operations. Once you have determined the number of I/O points, and all specialty applications, such as temperature controllers, you are ready to select the various elements of the SLC 500. Here are some ideas on selecting the appropriate hardware, and accompanying tables identifying the various components and their capabilities.

To create an SLC 500 System there are a few basic steps to take. The following checklist will guide you through the various steps required:

Once you have completed the above steps you are ready to get your system up and running.

Well, there you have it: a basic tutorial to make you familiar with and help you to configure your SLC 500 system. Following these simple steps will assist you in creating a system that will handle all aspects of your requirements. Furthermore, the Allen-Bradley SLC 500 is one of the most reliable and cost-effective options available in the industrial marketplace, and has been for many years. Go ahead. Design your system using the SLC 500. You'll be glad you did!

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 NUMBER 1746-IB8 1746-IB16 1746-IB32 1746-IC16 1746-IH16 1746-ITB16
# OF INPUTS 8 16 32 16 16 16
POINTS/COMMON 8 16 8 16 16 16
VOLTAGE 24V DC 24V DC 24V DC 48V DC 125V DC 24V DC
OPERATING VOLTAGE RANGE 10-30V DC 10-30V DC 15-30VDC (50°C)
15-26.4VDC (60°C)
30-60V DC (55°C)
30-55V DC (60°C)
90-146V DC 10-30V DC
CURRENT AT 5V 50mA 50mA 50mA 50mA 50mA 50mA
CURRENT AT 24V 0 mA 0 mA 0 mA 0 mA 0 mA 0 mA
VOLTAGE, OFF-STATE INPUT, MAX. 5.0V DC 5.0V DC 5.0V DC 10.0V DC 20.0V DC 5.0V DC
NOMINAL INPUT CURRENT 8 mA @ 24V DC 8 mA @ 24V DC 5.1 mA @ 24V DC 4.1 mA @ 48V DC 2.15 mA @ 125VDC
2.15 mA @ 132V DC
8 mA @ 24V DC
CURRENT, OFF-STATE INPUT, MAX. 1 mA 1 mA 1.5 mA 1.5 mA 0.8 mA 1.5 mA
SUGNAL ON DELAY, MAX. 8 ms 8 ms 3 ms 4 ms 9 ms 0.30 ms
SIGNAL OFF DELAY, MAX. 8 ms 8 ms 3 ms 4 ms 9 ms 0.50 ms

Discrete Sourcing DC Input Modules

PART NUMBER 1746-IG16 1746-IV8 1746-IV16 1746-IV32 1746-ITV16
# OF INPUTS 16 8 16 32 16
POINTS/COMMON 16 8 16 8 16
VOLTAGE 5V DC 24V DC 24V DC 24V DC 24V DC
OPERATING VOLTAGE RANGE 4.5-5.5 V DC 10-30V DC 10-30V DC 15-30V DC (50°C)
15-26.4V DC (60°C)
10-30V DC
CURRENT AT 5V 140 mA 50 mA 85 mA 50 mA 85 mA
CURRENT AT 24V 0 mA 0mA 0 mA 0 mA 0 mA
VOLTAGE, OFF-STATE INPUT, MAX. 2-5.5V DC 5.0V DC 5.0V DC 5.0V DC 5.0V DC
NOMINAL INPUT CURRENT 3.7 mA @ 5V DC 8 mA @ 24V DC 8 mA @ 24V DC 5.1 mA @ 24V DC 8 mA @ 24V DC
CURRENT, OFF-STATE INPUT, MAX. 4.1 mA 1 mA 1 mA 1.5 mA 1.5 mA
SIGNAL ON  DELAY, MAX. 0.25 ms 8 ms 8 ms 3 ms 0.30 ms
SIGNAL OFF DELAY, MAX. 0.50 ms 8 ms 8 ms 3 ms 0.50 ms

Discrete Sinking DC Output Modules

PART NUMBER 1746-OG16 1746-OV8 1746-OV16 1746-OV32 1746-OVP16
# OF OUTPUTS 16 8 16 32 16
POINTS/COMMON 16 8 16 16 16
VOLTAGE 5V DC 24V DC 24V DC 24V DC 24V DC
OPERATING VOLTAGE RANGE 4.5-5.5V DC 10-50V DC 10-50V DC 5-50V DC 20.4-26.4V DC
CURRENT @ 5V 180 mA 135 mA 270 mA 190 mA 250 mA
CURRENT @ 24V 0 mA 0 mA 0 mA 0 mA 0 mA
VOLTAGE DROP, ON-STATE OUTPUT, MAX. 1.2 V @ 1.0 A 1.2 V @ 0.5 A 1.2V @0.5 A 1.0 V @ 1.0 A
LOAD CURRENT, MIN. 0.15 mA 1 mA 1 mA 1 mA  1 mA
LEAKAGE CURRENT, OFF-STATE OUTPUT, MAX. 0.1 mA 1 mA 1 mA 1 mA 1 mA
SIGNAL ON DELAY, MAX. (RESISTIVE LOAD) 0.25 ms 0.1 ms 0.1 ms 0.1 ms 0.1 ms
SIGNAL OFF DELAY, MAX.
(RESISTIVE LOAD)
0.50 ms 1.0 ms 1.0 ms 1.0 ms 1.0 ms
CONTINUOUS CURRENT
PER MODULE
N/A 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) 6.4 A (0-60°C)
CONTIUOUS CURRENT
PER POINT
24 mA 1.0 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 ms N/A 3.0 A 3.0 A 1.0 A (30°C)
1.0 A (60°C)
4.0 A+

Discrete Sourcing DC Output Modules

PART NUMBER 1746-OB6EI 1746-OB8 1746-OB16 1746-OB16E 1746-OB32 1746-OB32E 1746-OBP8 1746-OBP16
# OF OUTPUTS 6 EP 8 16 16 EP 32 32 EP 8 16
POINTS/
COMMON
IND. ISOLATED 8 16 16 16 16 4 16
VOLTAGE 24V DC 24V DC 24V DC 24V DC 24V DC 24V DC 24V DC 24V DC
OPERATING VOLTAGE RANGE 10-30 V DC 10-50V DC 10-50V DC 10-30V DC 5-50V DC 10-30V DC 20.4-26.4V DC 20.4-26.4V DC
CURRENT @ 5V 46mA 135 mA 280 mA 135 mA 190 mA 190 mA 135 mA 250 mA
CURRENT @ 24V 0 mA 0 mA 0 mA 0 mA 0 mA 0 mA 0 mA 0 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 mA 1 mA 1 mA 1 mA 1 mA 1 mA 1 mA 1 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 ms 0.1 ms 0.1 ms 1.0 ms 0.1 ms 1.0 ms 1.0 ms 0.1 ms
SIGNAL OFF DELAY, MAX. (RESISTIVE LOAD) 2.0 ms 1.0 ms 1.0 ms 1.0 ms 1.0 ms 2.0 ms 2.0 ms 1.0 ms
CONTINUOUS CURRENT PER MODULES 12.0 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 POINT 2.0 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 ms 4.0 A 3.0 A 3.0 A 2.0 A 1.0 A (30°C)
1.0 A (60°C)
1.0 A (30°C)
1.0 A (60°C)
4.0 A 4.0 A

Discrete AC Input Modules

PART NUMBER 1746-IA4 1746-1A8 1746-IA16 1746-IM4 1746-IM8 1746-IM16 1746-IN16
# OF OUTPUTS 4 8 16 4 8 16 16
POINTS/
COMMON
4 8 16 4 8 16 16
VOLTAGE 100/120 VAC 100/120 VAC 100/120VAC 200/240VAC 200/240VAC 200/240VAC 24V AC/DC
OPERATING VOLTAGE RANGE 85-132V @
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 @ 5V 35  mA 50 mA 85 mA 35 mA 50 mA 85 mA 85 mA
CURRENT @ 24V 0 mA 0 mA 0 mA 0 mA 0 mA 0 mA 0 mA
VOLTAGE, OFF-STATE INPUT, MAX. 30 VAC 30 VAC 30 VAC 50 VAC 50 VAC 50 VAC 3.0 VDC
3.0 VAC
NOMINAL INPUT CURRENT 12 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 mA 2 mA 2 mA 2 mA 2 mA 2 mA 1 mA (DC)
1 mA (AC)
INRUSH CURRENT, MAX. 0.8 A 0.8 A 0.8 A 1.6 A 1.6 A 1.6 A 0.02 A
(AC ONLY)
INRUSH CURRENT TIME DURATION MAX. 0.5 ms 0.5 ms 0.5 ms 0.5 ms 0.5 ms O.5 ms --
SIGNAL ON DELAY, MAX. 35 ms 35 ms 35 ms 35 ms 35 ms 35 ms 15 ms (DC)
25 ms (AC)
SIGNAL OFF DELAY, MAX. 45 ms 45 ms 45 ms 45 ms 45 ms 45 ms 15 ms (DC)
25 ms (AC)

Discrete AC Output Modules

PART NUMBER 1746-OA8 1746-OA16 1746-OAP12
# OF OUTPUTS 8 16 12
POINTS/COMMON 4 8 6
VOLTAGE 120/240  VAC 120/240 VAC 120/240 VAC
OPERATING VOLTAGE RANGE 85-265 VAC @ 47-63Hz 85-265 VAC @ 47-63Hz 85-265 VAC @ 47-63Hz
CURRENT @ 5V 185 mA 370 mA 370 mA
CURRENT @ 24V 0 mA 0 mA 0 mA
VOLTAGE DROP, ON-STATE OUTPUT, MAX. 1.50 V @ 1.0 A 1.50 V @ 0.50 A 1.2 V @ 2.0 A
LOAD CURRENT, MIN. 10 mA 10 mA 10 mA
LEAKAGE CURRENT, OFF-STATE OUTPUT, MAX. 2 mA 2 mA 2 mA
SURGE CURRENT PER POINT 10.0 A for 25 ms 10.0 A for 25 ms 17.0 A for 25 ms
SIGNAL ON DELAY, MAX.
(RESISTIVE LOAD)
1 ms 1 ms 1 ms
SIGNAL OFF DELAY, MAX.
(RESISTIVE LOAD)
11 ms 11 ms 11 ms
CONTINUOUS CURRENT PER POINT 1.0 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 NUMBER FUNCTION CURRENT/
VOLTAGE
I/O
 CHANNELS
DESCRIPTION
1746-NI4 INPUT -20 TO + 20 mA
-10 TO + 10 VDC
4 HIGH RESOLUTION INPUT
CURRENT/VOLTAGE
1746-NI8 INPUT -20 TO + 20 mA
-10 TO + 10 VDC
8 HIGH RESOLUTION INPUT
CURRENT/VOLTAGE
1746-NI16I INPUT -20 TO +20 mA 16 HIGH RESOLUTION INPUT
CURRENT
1746-NI16V INPUT -10 TO +10 VDC 16 HIGH RESOLUTION INPUT
VOLTAGE
1746-NIO4I INPUT/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-NIO4V INPUT/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-FIO4I INPUT/OUTPUT 0 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-FIO4V INPUT/OUTPUT 0 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-NO4I OUTPUT 0 TO 20 mA 4 CURRENT OUTPUT
1746-NO4V OUTPUT -10 TO +10 VDC 4 VOLTAGE OUTPUT
1746-NO8I OUTPUT 0 TO 20 mA 8 CURRENT OUTPUT
1746-NO8V OUTPUT -10 TO +10 VDC 8 VOLTAGE OUTPUT
1746-NT4 INPUT 60 mA / 5V
40 mA /24V
4
+ CJC SENSOR
THERMOCOUPLE INPUT
TYPES J, K, T, E, R, S, B, N
1746-NT8 INPUT 120 mA/5 V
70 mA/24 V
8
+ CJC SENSOR
THERMOCOUPLE INPUT
TYPES J, K, T, E, R, S, B, N
1746-INT4 INPUT 110 mA/5 V
85 mA/24 V
4
+ CJC SENSOR
THERMOCOUPLE INPUT
TYPES J, K, T, E, R, S, B, N, C, D
1746-NR4 INPUT 50 mA/5 V
50 mA/24 V
4 RTD/RESISTANCE INPUT
1746-NR8 INPUT 100 mA/5 V
55 mA/24 V
8 RTD/RESISTANCEINPUT
1746-HSCE INPUT DIFF: 0 TO 5 VDC;
SE: ±5 VDC TO 30 VDC
1 SET ±A, ±B, ±Z DIFF; 5 VDC, 12 VDC, 24 VDC SE HIGH SPEED COUNTER WITH
DIFFERENTIAL (DIFF) OR
SINGLE-ENDED (SE) INPUTS
1746-HSCE2 INPUT 5 VDC TO 30 VDC 2 SETS ±A, ±B,±Z; 2 ENCODERS; 4 PULSE DIFF OR SE HIGH SPEED COUNTER WITH DIFF, SE, OR ENCODER INPUTS
1746-BLM INPUT/OUTPUT 110mA/5 V 4 DIS/4 ANA  INPUT;
4 DIS/4 ANA  & 1 EXCITATION OUTPUT
BLOW MOLDING I/O WITH DISCRETE & ANALOG INPUTS/OUTPUTS
1746-BTM INPUT -50 TO +50 mV;
-100 TO + 100 mV
4 BARREL TEMPERATURE MODULE
1746-HSTP1 INPUT/OUTPUT 200 mA/5 V 5 VDC DIFF/12-24 VDC SE INPUT; DIGITAL OUTPUT STEPPER CONTROL
MODULE
1746-HSRV INPUT/OUTPUT 300 mA/5 V 3 INPUT
1 OUTPUT
SERVO CONTROL
MODULE
1746-QV INPUT/OUTPUT 250 mA/5 V 1 INPUT
1 OUTPUT
OPEN-LOOP VELOCITY MODULE/HYDRAULICS
1746-QS INPUT/OUTPUT 1000 mA/5 V
200 mA/24 V
4 INPUT
4 OUTPUT
CLOSED LOOP SERVO POSITIONING FOR SYNCHRONIZED AXES

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Allen Bradley SLC 500 Communication Modules

Communication Modules

You will need to ascertain what your communication requirements are going to be, which will help you to select the proper communication modules for your system. Processors used in the SLC 500 PLC system communicate across the 1746 backplane, contained in the chassis, to the various Input/Output modules in the system. The different processors have a variety of communication ports on board for communication with other processors and computers. These varied communication ports will be part of the criteria you will use in selecting the right processors for your system. Every processor in the SLC 500 series has one or two built-in ports for direct communication with EtherNet/IP, DH+, DH-485, or RS-232 (DFI, ASCII, or DH-485 protocols).

Additionally, separate modules can be incorporated into the system's design to provide other communication ports within the system. Modules for ControlNet and Universal Remote Input/Output links are an option, as well as I/O adapter modules to interface I/O modules with scanner ports in remote locations. The Communication Modules available are denoted in the following table.

SLC 500 Communication Modules

PART NUMBER DESCRIPTION
1761-NET-ENI ETHERNET INTERFACE, 24 VDC, 10/100 Mbps, SERIES C DEVICE
1761-NET-ENIW WEB-ENABLED ETHERNET INTERFACE, 24 VDC, 10/100 Mbps, SERIES C DEVICE
1747-KFC15 CONTROLNET MESSAGING MODULE, 4-DIGIT, 7-SEGMENT DISPLAY; RS-232 TO SLC
1747-SCNR CONTROLNET SCANNER, CONTROLS BOTH DISCRETE & ANALOG I/O
1747-ACN15 CONTROLNET ADAPTER, 0.9 A @ 5 VDC, SINGLE & GROUP MODULE CONNECTION
1747-ACNR15 CONTROLNET ADAPTER, 0.9 A @ 5 VDC, SINGLE & GROUP MODULE CONNECTION
MEDIA REDUNDANCY VIA DUAL BNC CONNECTORS
1747-SDN DEVICENET SCANNER MODULE, 500 mA/5 VDC, 90 mA/24 VDC, 125/250/500 Kbps
1761-NET-DNI DEVICENET INTERFACE, 200 mA/24 VDC, 125/250/500 Kbps, ONLINE MONITORING
1747-KE DH-485/RS-232C INTERFACE MODULE, DF1 PROTOCOL, 150 mA/5 VDC, 40 mA/24 VDC
1761-NET-AIC ADVANCED INTERFACE CONVERTER, ISOLATED (2) RS-232 TO RS-485 CONVERTER,
120 mA/ 24 VDC, INRUSH MAX 200 mA/ 24 VDC, 500 VDC ISOLATION
1747-AIC ISOLATED LINK COUPLER, CONNECTS PROCESSOR TO DH-485 NETWORK
1747-UIC USB TO DH-485 CONVERTER, ˂100 mA USB, USB 1.1/ 12 Mbps, DH-485 BAUD/19.2 Kbps
1747-SN REMOTE I/O SCANNER, WIDE AREA DISTRIBUTION (10,000 FT),  CONNECTS 16/32 DEVICES, 600 mA
1747-BSN BACKUP REMOTE I/O SCANNER, SUPPORTS REDUNDANCY & REPAIR OF SYSTEM FAULTS, 800 mA
1747-ASB REMOTE I/O SCANNER, COMMUNICATION LINK WITH I/O MODULES, 375 mA
1747-DCM DIRECT COMMUNICATION MODULE, PLACED IN CHASSIS WITH PROCESSOR, 360 mA

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Allen Bradley SLC 500 Processor

Processor

Selecting a processor is the next step in designing your system. After taking all the steps above, it is possible to determine your processor needs. You will choose the processor needed based on memory, number of Input/Output modules, speed, communications, and programming requirements of your system. Here are the basic features of the SLC 500 Processors by type of processor:

  • SLC 5/01 - A basic set of 52 instructions with 1 K or 4 K options. This processor supports up to three chassis for a maximum of 30 slots and from 4 to 3940 Input/Output points.
  • SLC 5/02 - For more complex applications, communications, faster scan times, and extensive diagnostics. Maximum 3 chassis (30 slots) and 4 to 4096 Input/Output points.
  • SLC 5/03 - Available with 8 K, 16 K, and 32 K memory. Built-in RS-232 allows connection to external devices without added modules. Maximum 3 chassis (30 slots) and 4 to 4096 Input/Output points.
  • SLC 5/04 - Incorporates a DH+ port for high-speed communications between processors and controllers. Available memory options of 16 K, 32 K, and 64 K. Maximum 3 chassis (30 slots) and 4 to 4096 I/O points. SLC 5/04P contains ERC2 algorithms especially for Plastics Machinery Control.
  • SLC 5/05 - Same functions as SLC 5/04 but with Ethernet rather than DH+ communications. Ethernet communicates at 10 Mbps or 100 Mbps for high performance upload/download, online editing, and peer-to-peer communications. Maximum 3 chassis (30 slots) and 4 to 4096 I/O points.

The following tables further delineates the features available in the SLC 500 processors.

SLC 500 Processors

TYPE SLC 5/01 SLC 5/01 SLC 5/02 SLC 5/03 SLC 5/03 SLC 5/03 SLC 5/04 SLC 5/04 SLC 5/04 SLC 5/05 SLC 5/05 SLC 5/05
PART #
(1747-)
L511 L514 L524 L531 L532 L533 L541 L542 L543 L551 L552 L553
MEMORY 1 K 4 K 4 K 8 K 16 K 32 K 16 K 32 K 64 K 16 K 32 K 64 K
CURRENT/5 VDC 90 mA 90 mA 90 mA 500 mA 500 mA 500 mA 1000 mA 1000 mA 1000 mA 1000 mA 1000 mA 1000 mA
CURRENT/ 24 VDC 0 mA 0 mA 0 mA 175 mA 175 mA 175 mA 200 mA 200 mA 200 mA 200 mA 200 mA 200 mA
DISCRETE
I/O MAX.
7880 8192 8192 8192 8192 8192 8192 8192 8192 8192 8192 8192
 CHASSIS/
SLOTS
3/
30
3/
30
3/
30
3/
30
3/
30
3/
30
3/
30
3/
30
3/
30
3/
30
3/
30
3/
30
COMM.
ON-BOARD
DH-485
SLAVE
DH-485
SLAVE
DH-485 DH-485 &
RS-232
DH-485 &
RS-232
DH-485 &
RS-232
DH+ &
RS-232
DH+ &
RS-232
DH+ &
RS-232
ETHERNET & RS-232
MEMORY MODULE EEPROM EEPROM EEPROM FLASH EEPROM
PROG. LANG. RS LOGIX 500
PROG. INST. 52 52 71 107 107 107 107 107 107 107 107 107
SCAN TIME 8 ms/K 8 ms/K 4.8 ms/K 1 ms/K 1 ms/K 1 ms/K 0.9 ms/K 0.9 ms/K 0.9 ms/K 0.9 ms/K 0.9 ms/K 0.9 ms/K

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Allen Bradley SLC 500 Chassis

Chassis

Available in four different sizes, the SLC 500 chassis offers maximum flexibility as you configure your system. The chassis come in 4-slot, 7-slot, 10-slot, and 13-slot options to allow you to design the perfect system for your application. The chassis accepts the SLC 500 processor module or the SLC 500 adapter module and the various Input/Output modules. Every chassis will need its own power supply, which installs on the left side of the chassis. You can connect a maximum of three chassis with the available chassis interconnect cables. The following table delineates the chassis and cable options available for the SLC 500 system.

SLC 500 Chassis and Cable Options

PART NUMBER DESCRIPTION
1746-A4 4 SLOT CHASSIS
1746-A7 7 SLOT CHASSIS
1746-A10 10 SLOT CHASSIS
1746-A13 13 SLOT CHASSIS
1746-C7 CHASSIS INTERCONNECT CABLE – USED TO LINK CHASSIS UP TP 6” APART
1746-C9 CHASSIS INTERCONNECT CABLE – USED TO LINK CHASSIS 6” TO 36” APART
1746-C16/td> CHASSIS INTERCONNECT CABLE – USED TO LINK CHASSIS 36” TO 50” APART
1746-N2 CARD SLOT FILLER – USED TO PROTECT UNUSED SLOTS IN A CHASSIS

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Allen Bradley SLC 500 Power Supply

Power Supply

Each chassis in the SLC 500 system requires its own power supply. You will need to analyze your system requirements thoroughly to ascertain the power supply requirements for each chassis. Overloading a power supply can result in system shutdown and/or premature failure of the power supply or other system components. This is not the place to underrate system needs. As you calculate your system's power needs, don't forget to include possible future enhancements to the system. When configuring your system, it is always safer to provide excess power than to be borderline on your system's requirements.

The SLC 500 system has three AC and four DC power supply options. Mounting on the left side of the chassis, the power supply requires just two screws. The AC options are 120/240 volt selectable. All the power supplies have an LED indicating it is working normally. Each power supply can withstand brief power losses, which enables the system to continue normal functioning. All SLC 500 power supplies operate at 0 to 60° C (32 to 140° f) and use #14 AWG wiring. The power supply options for the SLC 500 are specified in the following table.

SLC 500 Power Supplies

PART NUMBER LINE VOLTAGE CURRENT @ 5 VDC CURRENT @ 24 VDC USER CURRENT INRUSH CURRENT
1746-P1 85-265 VAC
47-63 Hz
2 A 0.46 A 0.2 A @ 24 VDC 20 A
1746-P2 85-265 VAC
47-63 Hz
5 A 0.96 A 0.2 A @ 24 VDC 20 A
1746-P3 19.2-28.8 VDC 3.6 A 0.87 A 20  A
1746-P4 85-250 VAC
47-63 Hz
10 A 2.88 A 1 A @ 24 VDC 45 A
1746-P5 90-146 VDC 5 A 0.96 A 0.2 A @ 24 VDC 20 A
1746-P6 30-60 VDC 5 A 0.96 A 0.2 A @ 24 VDC 20 A
1746-P7 10-30 VDC
ISOLATED
12 VDC IN: 2 A
24 VDC IN: 3.6 A
12 VDC IN: 0.46 A
24 VDC IN: 0.87 A
20 A

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Allen Bradley SLC 500 Software

Software

The SLC 500 system uses RSLogix 500 ladder logic programming. This software package offers an industry leading user interface and is compatible with Rockwell Software's DOS-based programming packages and MicroLogix processors. RSLogix 500 correlates with Windows software, such as Windows 2000, Windows XP, and Windows Vista.

RSLogix 500 incorporates easy-to-use editing, such as drag-and-drop, Test Edits, and even online or offline editing. Context menus are quickly available with a right mouse button click. Input/Output configuration is easily carried out with both point-and-click and drag-and drop capabilities. Database editors, diagnostics and troubleshooting tools are also available at your fingertips. Online help is readily available, including step by step guidance for common programming functions. The RSLogix 500 programming packages described in the following table are compatible with Windows 2000, XP, and Vista. The English versions are provided on CD-ROM so that you always have the original copy available for present or future needs.

RSLogix 500 Programming Packages

PART NUMBER DESCRIPTION
9324-RL0300ENE RSLOGIX 500 PROGRAMMING FOR SLC 500 & MICROLOGIX
9324-RL0100ENE RSLOGIX 500 STARTER PROGRAMMING PACKAGE
9324-RL0700NXENE RSLOGIX 500 PROFESSIONAL PROGRAMMING PACKAGE

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