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GuardPLC 2000 Safety Controller
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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) |
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| 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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