Connecting The Fault Relay/General Purpose Interface (Gpi) Ports - Harmonic Electra9200 Installation Manual

Chapter 2 Installing the Encoder
To connect the Ethernet management cable(s):
Connect an RJ-45/UTP cable from the encoder's back panel 10/100/1000 Mbps port to
n
a port on an Ethernet switch.
For RJ-45 pinouts, see
n
NOTE: The network hosting the IP output traffic should be a different network from your
management network.
The 10/100 test port on the front panel is for testing use only and should not be used as a
management port.

Connecting the Fault Relay/General Purpose Interface (GPI) Ports

Fault Relay
A contact closure is a physical connection between two platforms that defines the state of the
platform as either on or off. The Electra 9200 can signal a fault through a fault relay (contact
closure) for an external device. NMX communicates with the encoder via Ethernet and does
not use this function. The fault relay port connects to a Form C relay that can switch up to
0.25 A at 30 VDC.
The encoder energizes the fault relay during normal operation. The fault condition is indicated
in the same way as the encoder's powered-off condition, which is with the relay de-energized.
You can use this method to correctly identify a power supply failure or loss of input power.
The signals are normally open or normally closed.
NOTE: Any alarm causes the fault relay to change to the fault state. When multiple alarms
accumulate, all alarms must be active for the relay state to change.
GPI Ports
The GPI ports can be used for DPI input to the Electra 9200 and Ion-based encoders when a
contact closure is created. There are four GPI contacts. Each is independent and can be
provisioned to any one channel and multiple available channels.
To activate a contact closure:
1. Insert the individual wires needed into the contacts:
The first three ports are for fault relay, while the inputs labeled 1 through 4 are GPI ports.
2. Ground the wires to the ground pin (the last pin on the right) to activate a contact closure.
When configured in the DPI properties page of NMX, an SCTE35 message is sent out
when that pin is set to low.
Figure 2–4: Fault Relay/GPI Ports
For Fault Relay and GPI pinouts, see
© 2015 Harmonic Inc. All rights reserved.
RJ-45 Ethernet Port Pinouts.
(RN-05)
Fault Relay/General Purpose Interface (GPI)
14
Cabling the Encoder
Ports.
Electra 9200, Rev O