Example: Dual-Channel, Failsafe Input Device, With Test Pulse - Pilz PSS Series Operating Manual

Wiring

Example: Dual-channel, failsafe input device, with test pulse

Features:
• Depending on the application area and its respective regulations, this
connection diagram is suitable for applications up to Category 4 in
accordance with EN 954-1.
• This type of connection is mainly used for signal inputs with infrequent
operation.
• The operating system will detect all shorts between contacts and short
circuits to L+ and L-.
• Short circuits across the contact can be detected via the feasibility check
in the user program.
• The test pulse must be allocated to the input in the system software's
PSS Configurator (e.g. PSS WIN-PRO).
• On input devices with identical channels, each channel should be given a
separate test pulse. This will ensure that all short circuits are detected,
with the exception of short circuits that short out the input device (cable
from the test pulse to the input device and cable from the input device to
the input).
• Cable runs (distance from input device):
200 m; with 1 kOhm resistance parallel to input max. 800 m
5-10 Operating Manual: PSS(1) DI2O Z