GuardPLC 2000 Safety Controller
GuardPLC 2000 Controller
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A scalable, high-performance safety system, the GuardPLC 2000 modular safety controller can be easily expanded by adding up to six I/O modules in its chassis, including digital and analog I/O modules, and a high-speed counter module. Additional I/O expansion is also available by using the GuardPLC distributed I/O blocks on the safety-rated GuardPLC Ethernet.
Benefits
- Modular – greatest I/O density of the GuardPLC family (up to 144 digital I/O points), which allows for specific configuration to suit individual needs.
- Expandability – widest variety of safety I/O available to expand the safety system.
- Ethernet and ASCII port – allows communication to other GuardPLC controllers, Distributed I/O, and other standard devices (HMIs and standard PLCs).
- Safety analog outputs – for controlling valves, valve positions, and speeds.
- High-speed counters – high-speed counters provide a cost-effective solution for applications that require speed and motion sensing.
Typical Applications
- Entertainment industry; ride control and ski lift control
- Press control
- Burner management
- Emergency shutdown
- Material handling systems
Product Design
The GuardPLC 2000 controller consists of a rack, power supply, CPU with communication ports and I/O modules. As many as six I/O modules may be added to the basic GuardPLC 2000 system, including digital input and output channels and analog input and output channels. All I/O can be tested by the CPU to provide system integrity. The GuardPLC 2000 system can provide as many as 144 digital inputs and 96 digital outputs. Programming is accomplished with the RSLogix Guard PLUS! Programming and Configuration Software.
The GuardPLC 2000 CPU has one 10/100BaseT Ethernet port for programming and peer-to-peer communications and two RS-232 interface ports (9-pin D-shell) for ASCII. The CPU controls all functions of the GuardPLC 2000 system as well as communication to other systems. LEDs display the operating modes: Run and Error for the I/O modules; Run, Error, Stop, Programming and Forcing for the CPU.
Features
- Metal chassis.
- I/O self test.
- 24V dc digital I/O.
- Expandable number of I/O.
- Multiple I/O test points.
- Certified by TÜV for use in applications up to SIL 3 according to IEC 61508; EN 954-1, Category 4.
- Programmed with RSLogix Guard PLUS! Software.
- RS-232 port for ASCII communication (read only).
- Ethernet port for programming and configuration.
Communication
GuardPLC safety controllers communicate on a Safe Ethernet communications network called GuardPLC Ethernet. The network is TÜV-certified for use in safety applications up to EN954 Category 4 and SIL 3, and can be used for distributed safety I/O and peer-to-peer communications between GuardPLC controllers, as well as programming using RSLogix Guard PLUS! software. And because it’s Ethernet, you use standard category 5 cables, switches and routers.
Using GuardPLC distributed I/O, you can place your safety I/O where your safety field devices are located, reducing wiring costs. Peer-to-peer communications allow GuardPLC controllers running their own programs to interlock with each other for applications that need to link one manufacturing cell to others.
In addition, the GuardPLC 1200 and GuardPLC 2000 controllers have an RS-232 ASCII port that lets a standard PLC read safety system status out of the GuardPLC controller. GuardPLC 1600 and 1800 controllers have an RS-485 ASCII port and are available with either Modbus RTU slave or PROFIBUS DP slave communications. Using RSLogix Guard PLUS! programming software, select the tags you wish to read from the GuardPLC controller, and the data is sent every time the connected device asks for it.
NetLinx Integration
The ever-increasing demand for both enhanced plant productivity and improved workplace safety has fueled a trend toward integrated safety control and standard control systems. Control system users now expect their safety systems to possess all of the efficiencies and conveniences of their standard controls. Today's modern manufacturing plants will not accept safety systems that compromise productivity. Both machine builders and end users expect that the cost of implementing and maintaining a safety system will continue to drop without reducing the level of protection to the user.
The first level of integrating your GuardPLC controller into your standard control system is at the information network level. The GuardPLC 1600 and 1800 controllers let you to accomplish this easily with embedded EtherNet/IP protocol. Able to run EtherNet/IP protocol at the same time as safety-rated GuardPLC Ethernet protocol, the GuardPLC controller uses EtherNet/IP protocol to communicate status about the safety control system to other standard devices such as PLCs (ControlLogix®, FlexLogix™, CompactLogix™, SLC™ 500 or PLC-5®), HMIs (PanelView™ and VersaView®) and others. The GuardPLC controller can even control standard I/O, like Flex I/O and Point I/O, on an EtherNet/IP network. This capability lets you integrate your GuardPLC on the EtherNet/IP network already running in your plant.
The GuardPLC 1600 and GuardPLC 1800 controllers can also communicate with devices on the DeviceNet™ safety network via the DeviceNet Safety Scanner. The scanner communicates with CompactBlock™ and ArmorBlock® Guard I/O™, providing safety I/O data and status information to the GuardPLC controllers. The safety scanner also allows for standard DeviceNet communication to devices such as standard PLCs, HMIs, and standard I/O.
GuardPLC Typical Configuration
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Specifications
General Specifications
The following specifications are common to all GuardPLC products unless indicated.
| Operating Temperature | 0…60 °C (32…140 °F) |
| Non-Operating Temperature | -40…85 °C (-40…185 °F) without backup battery |
| Relative Humidity | 95% |
| Vibration | 1 g @ 10…150 Hz |
| Shock, Operating | 15 g |
Certifications
(When product is marked.)
| Certifications | GuardPLC | 1753 I/O | 1755 I/O | 1753-DNSI | |||
| 1200 | 1600 | 1800 | 2000 | ||||
| c-UL-us | UL Listed Industrial Control Equipment, certified for US and Canada. | UL Listed for Class I Division 2 Groups A,B,C,D Hazardous Locations, certified for US and Canada ¬ | |||||
| CE | Compliant for all applicable directives. | ||||||
| C-Tick |
C-Tick compliant with all applicable acts | ||||||
| TUV | TÜV Certified for Functional Safety up to SIL 3, Cat. 4 | ||||||
| ODVA | — | ODVA conformance tested to DeviceNet and DeviceNet Safety specifications. | |||||
GuardPLC 2000 Controller Specifications
Because the GuardPLC 2000 controller is a modular system, you must select a controller, chassis, power supply, and I/O modules. Use the following specification tables to help you decide which components to select for your application.
GuardPLC 2000 Controller
| Cat. No. | 1755-L1 |
| Application Memory | 500 KB |
| User Program Memory | 500 Kbytes |
| Available User Memory | 1000 |
| Communication Ports | 1 Ethernet connector for RSLogix Guard PLUS! 2 ASCII connectors (RS-232) |
| Operating Voltage, Nominal | 3.3V DC 5V DC |
| Ethernet Interface | RJ-45 |
| EtherNet/IP Communication Rate | 10/100 Mbps |
| Digital I/O, Max. | 240 |
| Analog I/O, Max. | 48 |
| I/O Total, Max. | 240 |
Chassis
The GuardPLC chassis houses the GuardPLC 2000 controller, power supply, and up to six safety I/O modules. A filler module is also available for unused slots.
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| Cat. No. | 1755-A6 |
| Description | 6-slot GuardPLC 2000 I/O Rack |
| Expansion Module Slots | 6 |
| Dimensions (HxWxD), Metric | 255 x 285 x 210 mm |
| Dimensions (HxWxD), Imperial | 10 x 11.2 x 8.3 in |
| Mounting Type | Panel |
Power Supply
The Power Supply module transforms the system supply voltage from 24V to 3.3V dc/5V dc (used for internal I/O bus). It occupies the left-most slot of the GuardPLC 2000 chassis. The power supply comes with a lithium battery, which has a four-year lifespan, that is used for back-up. Four LEDs indicate the power supply, battery voltage, and faults.
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| Cat. No. | 1755-PB720 |
| Description | GuardPLC 2000 Power Supply Module |
| Current Capacity (Amps) at 3.3V | 10 |
| Current Capacity (Amps) at 5V | 2 A |
| Operating Voltage Range | 20.4…28.8V DC (10 ms buffer), ripple £15% |
| Operating Voltage, Nominal | 24V DC |
| Power Supply Output Current Rating | 10 A @ 3.3V DC 2 A @ 5V DC |
| External Fusing | 30 A / IEC¬ |
| Overload Protection | None |
| Watchdog Timer | Yes |
| Replacement Battery | 1755-BAT |
| Weight, Metric | 820 g |
| Weight, Imperial | 1.80 lb |
| Operating Temperature | 0…60 °C (32…140 °F) |
| Non-Operating Temperature | -40…60 °C (-40…140 °F) with battery -40…85 °C (-40…185 °F) without battery |
| TUV | TÜV Certified for Functional Safety. |
| CE | Compliant for all applicable directives. |
| C-Tick | C-Tick compliant with all applicable acts |
| UL | UL Listed Industrial Control Equipment. |
| ¬ The supply can provide up to 30 A for I/O modules. Use an appropriate fuse for your system's power requirements. | |
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GuardPLC 2000 I/O
Safety-related inputs are automatically subjected to a high-grade, cyclical self-test in GuardPLC 2000 systems during operation. These test routines are TÜV approved and help ensure the safe function of the respective module. When an error is detected, the application is provided with a "0" signal, and a detailed error message is generated optionally. If there are minor failures in the module (no effect on the safety function), no user diagnostic information is generated.
- The GuardPLC 2000 digital I/O module, 1755-IB24XOB16, has 24 inputs and 16 outputs for signals, and the inputs and outputs are electrically isolated. In case of module error, the outputs are switched to the de-energized state.
- The eight channels on the analog input module, 1755-IF8, can be used as eight single-ended or four differential analog inputs for 0 to 10V or 0 to 20 mA signals. No mixing is allowed. The incoming signals are converted into an integer value with a 12-bit resolution. This value then can be used in the user program. In case of module error, the logic outputs of the modules are switched to the de-energized state.
- The analog output module, 1755-OB8, has eight analog outputs with a 12-bit resolution. They are electrically isolated in groups of two outputs with a common ground. The output ranges of the module can be switched to 0 to 21 mA, 0 to 10.25V dc or -10.25 to +10.25V dc. For each channel, the module has a switch placed on the printed circuit board to switch the different output ranges. In case of module error, the outputs are switched to the de-energized state.
- The counter module, 1755-HSC, has two operating modes: counter mode and decoder mode. The module has 24-bit counters with two outputs each. The counters can operate in both directions (up and down) and have a separate reset input. The input signals of 5V can be in a frequency range of 0 to 1 MHz. Use a PC to configure the input voltage, which can be 5V or in a range of 10 to 26.4V. In case of module error, the outputs are switched to the de-energized state. The counter can count pulses with direction and reset inputs up to 1 MHz. The counter module can also be used as an 8-bit gray code encoder.
GuardPLC 2000 24-input / 16-output Digital Combination Module
| Cat. No. | 1755-IB24XOB16 |
| Number of Digital Inputs | 24 |
| Number of Digital Outputs | 16 |
| Backplane Current (mA) at 24V | 500 mA |
| Backplane Current (mA) at 3.3V | 300 mA |
| Current, On-State Output, Max. | 2 A @ 30 °C |
| Operating Voltage Range | 24V DC (-15%…+20%), ripple £5% |
| Voltage, On-State Input, Nom. | 24V DC |
| Voltage, On-State Output, Max. | Operating voltage minus 2V (depending on load) |
| Voltage, On-State Output, Nom. | 24V DC |
GuardPLC Safety Analog I/O Modules
| Cat. No. | 1755-IF8 | 1755-OF8 |
| Description | GuardPLC 2000 8-input Analog I/O Module | GuardPLC 2000 8-output Analog I/O Module |
| Number of Analog Inputs | 8 single-ended or 4 differential | — |
| Number of Analog Outputs | — | 8 |
| Backplane Current (mA) at 24V | 400 mA | 400 mA |
| Backplane Current (mA) at 3.3V | 150 mA | 150 mA |
| Operating Voltage Range | 24V DC (-15%…+20%), ripple £ 15% | 24V DC (-15%…+20%), ripple £15% |
| Overvoltage Protection | 30V (±15V DC) | 24V |
| Input Impedance | Analog Input: 1 MW (DC) | — |
| Input Signal Range | 0…±10V DC or 0…20 mA (with shunt) 0…±10.25V DC or 0…20.5 mA (with shunt) |
— |
| Input Resolution | 12 bit | — |
| Output Signal Range | — | 0…±10V or 0…20 mA |
| Source Value | — | UINT |
| Accuracy | 0.1% @ 25 °C (77 °F) 0.5% @ 60 °C (140 °F) |
0.3% @ 25 °C (77 °F) 0.5% @ 60 °C (140 °F) |
GuardPLC 2000 Safety High-Speed Counter Module
| Cat. No. | 1755-HSC |
| Number of Counters | 2 |
| Counting Frequency (kHz), Max. | 1000 |
| Number of Digital Outputs | 4 |
| Output Point Density | 4 |
| Backplane Current (mA) at 24V | 100 mA¬ |
| Backplane Current (mA) at 3.3V | 800 mA |
| Backplane Current (mA) at 5V | 100 mA |
| Overload Current, Max. | 2 A @ 18V (all four outputs overloaded)T |
| Current, On-State Output, Max. | 500 mA |
| Counter Input Current, Nom. | £3 mA |
| Counter Input Voltage, Nom. | 5V or 24V |
| Operating Voltage Range | 24V DC (-15%…+20%), ripple £15% |
| Input Resistance | 3.7 kW |
| Input Resolution | 24 bit (value range 0…16,777,215) |
| ¬ Without load. T This is the level at which the outputs will switch off. With a supply voltage of 24V, the overload current will be slightly higher than 2A. |
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For More Information
These and other publications are available for download from the Rockwell Automation Literature Library.
| For More Information See | Publication Number |
| GuardPLC Programmable Controllers Selection Guide | 1753-SG001 |