VCSBC4012.pdf – VCSBC4012 Single Board Smart Camera Operating Manual
9
Input Signals IO interface
Nominal voltage:
12 – 24 V
Absolute maximum voltage:
voltages greater than 40 V can destroy the inputs
Type:
Circuit GND directly connected
Input current:
1 mA @ 24V
Threshold value:
10 V
Internal signal delay:
- No delay for direct IO access
- 10ms delay for DSP polling
The PLC-compatible inputs (24-V level, the positive signal is detected) include input protection circuits.
A minimum voltage of 10V is required to reliably sense a logic high signal.
Output Signals IO Interface
Operating voltage:
Depends on external output supply
Absolute maximum voltage:
voltages greater than 40 V can destroy the outputs
Type: BC850
open
collector
Switching voltage:
negative switching (NPN), output high switching to GND
Current:
max. 80 mA per output
Absolute maximum current:
total currents greater than 80 mA per output can destroy
plugs and cables
no inductive/ capacitive load allowed
Switching power:
max. 1.0 W per output
Protection against inductive
loads:
no
Resistance when switched on:
20 Ohm
Short circuit protection:
No protection
Suggested external circuit for using camera outputs NPN
GND
R pull- up, 1k – 10k,
depending on Voltage
(5V: 1k – 24V: 10k)
Camera output circuit
(internal)
External output circuit
external supply
Output signal voltage
output transistor
switching to GND
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1996-2011 Vision Components GmbH Ettlingen, Germany
