SNR SNR-S212i-8POE Series, Руководство по установке

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SNR-S212i-8POE Installation Guide Hardware structure
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2.7.7 Digital input cable
Introduction
The digital input interface on the SNR-S212i-8POE uses 4 PINs of the 5-PIN Phoenix
terminal (5.08 mm space) to input external alarms from an external device.
The digital input interfaces supports dual way input. Each way supports two statuses:
Status 1: the input voltage is 13 30 V.
Status 2: the input voltage is -30 to 1 V.
The condition for triggering alarms can be configured as required. By default, it is status 1.
If status 1 is configured as the alarm status, status 2 is the normal status.
If status 2 is configured as the alarm status, status 1 is the normal status.
Appearance
The digital input cable is composed of the connector and alarm conducting wire, as shown in
Figure 2-16.
Figure 2-16 Alarm interface
Table 2-23 describes the digital input interface.
Table 2-23 Digital input interface
Terminal Description
|1 Positive terminal of the No. 1 way external digital input
|2 Positive terminal of the No. 2 way external digital input
Negative terminal
Technical specifications
Table 2-24 lists technical specifications of the digital input cable.