Eurotech PCN-1001, User Manual

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Know
WinClient PCN-1001 User manual
69
PCN-1001_UserMan_En_4.0
Notes about the Digital I/O interface
The PCN-1001 can be interfaced and triggered by means of two general-purpose inputs and two general-purpose
outputs. For example, the general-purpose digital I/O interface can be used to detect a doors status (open or
closed).
In this case the logic to follow is:
0 Door closed
1 Door open
The counters will be activated when the door
status becomes 1 (Open).
The general-purpose I/Os are 1 kV isolated
and are available on the M1 connector.
They allow for a direct connection to industrial equipment with an isolation of 3750 V
RMS
.
In the Wide-gate configuration the door status input has to be connected to the M1 connector of the first PCN-
1001, using GPI1. For further information refer to the ‘ Optocoupled I/O functions panel’ paragraph on page 67
and to the Note: ‘ How the threshold works when using digital inputs’ on page 47.
The Output Block
The figure below shows the electrical schematics of the output block. The labels on the right side refer to the M1
and M2 connectors, while the left side of the picture refers to the internal processing part of the system.
The Output Block behaves as a low-side switch. The load connected to the low-side switch can draw current
either from an external power source or from the Digital OUT V+ referred to the Digital OUT GND.
Figure 5. Schematics of the output differential optocoupled block
Recommended output operating conditions
PARAMETERS
SYMBOL VALUE UNIT
Maximum Voltage
V
MAX
32 V
Maximum Reverse Voltage V
REV MAX
32 V
Maximum Current I
MAX
300 mA
Maximum Current on Digital OUT V+
I
MAX ON V+
20 mA
2nd
PCN-1001
1st
PCN-1001
M2 M2 M1 M1
60 cm
Direct
connection
Vehicle Data BUS (Communication interface and power supply)
Central
Unit
Door