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The Pilz PSS SB DI16 is a programmable safety system module designed for use as a decentralized input/output device on SafetyBUS p. This operating manual, item number 20 085-07, provides comprehensive information on its function, operation, and technical specifications.
The PSS SB DI16 module provides 16 digital inputs and 4 dedicated test pulse outputs. It is suitable for connecting single or dual-channel safety-related input devices, with or without test pulses. The inputs can be assigned to two I/O-Groups within SafetyBUS p. Each test pulse output features four terminals, which can also be configured in pairs as 24 VDC terminals. The module requires a 24 V supply, which powers both the module electronics and the dedicated test pulse outputs. Galvanic isolation from SafetyBUS p is achieved via optocouplers, enhancing safety and reliability.
The module's inputs are designed to detect "High" signals between +15 VDC and +30 VDC and "Low" signals between -3 VDC and +5 VDC. All inputs include input filters. The input status is transmitted to the PSS master CPU via SafetyBUS p. Diagnostic circuitry continuously monitors the function of the inputs, including the input filter. In the event of an error, all outputs in the affected I/O group are switched off, and the I/O-group transitions to a STOP condition. An error telegram is then stored on SafetyBUS p, and the error is logged in the PSS SB DI16 error buffer.
For applications where test pulses are not used, single-channel input devices can be used up to and including category 2 in accordance with EN 954-1, while dual-channel input devices extend to category 3 applications. Proper wiring is essential to prevent short circuits in external wiring and shorts to the supply. Test pulses are mandatory for single-channel input devices above category 2 and dual-channel input devices above category 3.
Signal detection at the inputs requires a signal to be present for a duration longer than the "Event Timeout" configured in the PSS WIN-PRO system software. Signals shorter than the 300 µs pulse suppression time will be ignored, and no Event Telegram will be sent. The module supports two signal change behaviors: "Default," where signal changes are not registered while waiting for an acknowledgment telegram, and "Fast," where each signal change is stored in a FIFO telegram buffer, and an Event Telegram is sent for each detected change upon acknowledgment.
The four test pulse outputs (T₀ to T₃) are used for testing input device wiring. Only inputs operating on the zero signal principle (switching off) are permitted for safety-related applications. Test pulses are allocated to inputs via the configurator in the programming device. Each test pulse output has four terminals, which can be configured as 24 VDC terminals if not used for test pulses. By default, all terminals are configured as 24 VDC terminals. Each terminal pair has a maximum load capacity of 0.5 A.
The module's operation on SafetyBUS p requires setting a device address via a switch and configuring it using the PSS WIN-PRO system software. Device addresses from 32 to 95 (decimal) are permitted. The configurator also defines the I/O groups to which the device belongs. The module can be divided into Section A and Section B, which can belong to different I/O-Groups. Inputs can be assigned to either section as needed. The PSS master addresses inputs based on their section membership and the device address.
Display elements include LEDs for status display for each input, a "Supply" LED, a dual-colored "Device" LED, an "SB active" LED, and an "I/O Group" LED.
Installation involves attaching the module to a 35 mm DIN-rail or screwing it onto a mounting plate using fixing bolts. Recommended free space for rail-mounting, ventilation, and wiring should be observed.
In case of a defective module or wiring error, all outputs in the affected I/O group will switch off, and the I/O-group will enter a STOP condition. An error telegram is stored on SafetyBUS p, and the error is logged in the PSS SB DI16 error buffer. Error messages appear on the PSS master's display, and the error stack display in the programming device can be used to locate the error.
For recommissioning, a function test is crucial after inserting terminal blocks, as they are not position-coded, to eliminate potential errors. The module configuration is managed through the online help of the PSS WIN-PRO system software.
General| Brand | Pilz |
|---|---|
| Model | PSS SB DI16 |
| Category | Network Hardware |
| Language | English |
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