Installation Guide

Page 10
Installation guide
INSTALL_GATEWAY-LITE-V7
2019/04 Edition
4.3 Dry contacts
Number of dry contacts
4
Breaking capability
60V / 100mA
Connectors
Terminal block
Wire sections
From AWG28 to AWG16
(0.08mm² to 1.3mm²)
Dry contacts consist of isolated relays with breaking capability of 60V / 100mA. It’s easy to use
standard voltages available in the technical cabinets, namely 12VDC and 24VDC.
Use the shortest cable as possible and make sure it’s properly sized to carry the required
current. The pluggable terminal block accepts wire sizes ranging from 0.08mm² to 1.3 mm² (16
AWG to 28 AWG).
The equipment includes removable connectors for user wiring. To prevent the connections
from loosening, make sure the connector is properly seated and the wire is securely plugged
into the connector. To avoid damaging the connector, be careful not to over tighten the screws.
The maximum torque for the connector screws is 0.25 Nm.
The breaking capacity of the contacts is limited to 100mA. This is more than enough
for a traffic light controller or PLC, but a larger load should never be connected
directly to one of the dry contacts.
Dry contacts act as simple switches. For the information to be understood by a PLC, it is
necessary to load the outputs. Only use resistive loads. Below is an example wiring diagram
in case the PLC and the GATEWAY-LITE are powered by 12VDC:
The dry contacts can be configured via the NETPULSE-APP application to be in normally
closed or normally open mode.