54
Parallel interface USP-PI
Test function
22
Set outputs
It is possible to check the outputs of the USP-PI and wiring to the control unit by the test
function „set outputs“. The outputs can be switched completely or individually. Additionally
there is a short circuit test.
Fault signals from the USP-PI
If a fault is recognised by the USP-PI, the outputs 1-15 will go on and the output 16 off.
Communication fault
There is interference or no communication between the USP-Receiver and the USP-PI.
Possible causes:
- Receiver cable is not connected or damaged
- Too high residual ripple from the power supply (see technical data)
Ultrasound pulse fault
The USP-receiver does not recognise the ultrasonic signal.
Possible causes:
- Signal wire is damaged (large kink or bend in wire)
- Incorrectly mounted signal wire in the damper
- No connection between the receiver and transmitter (cable not connected or wires crossed
from the travelling cable – check the transmitter LED)
- Insufficient supply voltage (see technical data)
Output fault
Causes:
- One or more outputs are shorted
- The individual outputs can be checked as described in point 22.
Summary of Contents for USP-PI
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