Energotest ZL-4A, Operating Manual

Page: 38 / 97

Operating Manual
38 Arc fault
protection ZŁ-4A; (07.2019)
10.2. Optical inputs configuration
Optical inputs are configured by the manufacturer. If any change in optical inputs is nec-
essary follow the instruction point 11.3.
Default configuration:
•
C1 input
– associated to the zone 1,
•
C2 input
– associated to the zone 1,
•
C3 input
– associated to the zone 2,
•
C4 input
– associated to the zone 2.
10.3. Optical inputs checking
10.3.1. Check with an external light source
In order to activate optical inputs one has to use a light source of ~40 klux and place it 20 cm
away from the sensor. It is also possible to use a flash light. Information on optical module
activation will be visible on the central unit panel
– Fig. 21. A message on a temporary acti-
vation will be visible also on page 3) ACTIVATION of the central unit operation panel. “OPT
MODULE ACTIVE” LED will be illuminated with pulsed light.
During continuous lighting on the sensor after 5 s the inputs will become permanently
blocked and “ERROR” LED will light both on JP and JC. “OPT MODULE ACTIVE” LED will
light steadily. Detailed information on the activation will be available on the central unit opera-
tion panel. The signaling relay contact (F8, F9) JC will be closed. After removing the light
source, information on the temporary activation of the optical module will remain visible on
the panel. It should be removed by pressing a button on the bay unit control panel.
Attention!
If U< module is activated during optical inputs checking with an external light source, some
tripping signals may be generated by the protection according to the current sensors configu-
ration.
ESC
KAS