Led Indicators - Fermax EXP8-IO Manual De Instrucciones

Cod. 970092 V12_20
Note: Do not use more than single pair in UTP cable for RS485 communication bus.

LED indicators

Expanders are equipped with LED indicators which are used to signal integral functions.
Table 2. LED indicators
Symbol Colour
Indicator
PWR
LINK
REL1-REL8
Inputs
Expander offers general purpose parametric inputs of NO and NC, type. Input types and electric parameters
such as response time are defined within low level configuration (AC-MAX ST/LT v2.0). Input functions are
assigned within high level configuration (AC-MAX ST v1.6/v2.0). Multiple functions can be assigned to the
same input at the same time.
Table 3. Input types
NO input
NO input can be in normal or in triggered state. In
normal state C contacts are opened. Input
A
triggering is caused by C
Outputs
Expander offers relay outputs with NO/NC contacts. Electric parameters such as polarity are configured within
low level configuration (AC-MAX ST/LT V2.0). Function are assigned to outputs within high level configuration
(AC-MAX ST v1.6/2.0 o LT V2.0). Multiple functions with different priorities can be assigned to the same output
at the same time.
Integral functions
LED indicates expander power supply.
Green
LED indicates communication on RS485 bus
Red
LED is on when corresponding relay is switched on.
Red
contacts closing.
A
NC input
NC input can be in normal or in triggered state. In
normal state C contacts are closed. Input triggering
A
is caused by C contacts opening.
A
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