User manual

CONFIGURATION
001-7100-100 Version 0 Page 55 of 66 Vanguard 3G User Manual CDMA Version
Table 7 - I/O Signal Specifications
Input Type Label Specification
Analog Input AIN1…AIN4 External input voltage range:
0 to+28 Volts
Digital Input DIN1…DIN4 Logical level inputs, Schmitt-trigger
Positive threshold voltage: 2.2V max
Negative threshold voltage: 0.6V min
Maximum input voltage: 5.5V
General Purpose
External Digital
Outputs
NO1-COM1
NO2-COM2
NO3-COM3
NO4-COM4
The default Vanguard 3G power-up
state for each relay is open (no contact
between COM and NO output lines)
Nominal Switching Capacity (resistive
load)
1A, 30VDC
0.3A, 125 VAC
5.11.1 Debouncing
All analog and digital input signals are debounced for 500ms. Generation of all alarms and
indications is subject to a 500ms debouncing.
5.11.2 I/O Configuration
The Vanguard 3G I/O subsystem is configured via the Vanguard 3G WEB pages. Status Monitoring is
provided via NMEA-based protocol. The Vanguard 3G I/O subsystem operates according to a
manager/agent model. The PC-hosted manager sends requests to the Vanguard 3G I/O agent, which
performs the required actions. The Vanguard 3G agent reports alarms and indications to the PC-
hosted manager.