Connecting the Inputs and Outputs
5-18 Installation Manual: PSS 3056 Series
On-board dual-pole 2 A outputs
PSS 3056 PSS 3056-1 PSS 3056-2
PSS SB 3056
Number 8 4 4
Configuration O1.16 - O1.23 O1.16 - O1.19 O1.16 - O1.19
Features:
• The outputs are dual-pole switching 2 A outputs.
• The operating system of the programmable safety system tests the
outputs during each cycle. Any short circuits or open circuits to the load
will be detected.
• During testing, the load is isolated from the supply for 100 ... 200 µs
in each cycle (depending on the load and the line length).
The load must not switch off during this time.
Outputs that are switched off are switched on for approximately 100 µs,
in order to test the monitoring inputs. The load must not switch on during
this time.
• To avoid overloading the contacts, the current at the connection
terminals should be 10 A maximum.
• The maximum continuous current over all the outputs is 10 A.
• Error messages can occur when testing outputs on which the contactors
are smaller than the recommended load. The error messages are
triggered by too high an inductance on the contactors. In this case it
helps to have a 1 kOhm resistor connected in parallel to the contactor
coil.
• Each output is protected against short circuit, overload and
overtemperature. Outputs are designed for resistive and inductive loads.
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