10
General Description
Informer Sensor/Radio Interface Unit (Model I-IPSIU)
Visual Indications
Table 1 Visual Indications
LED
Description
POWER The green Power LED turns on when power is connected and the device is
connected to a Federal Signal enabled network server. The Power LED flashes
on and off at a 100 ms when the unit is disconnected from the server.
Ethernet Port (PoE)
The I-IPSIU has an 8 pin Ethernet port for connecting to the communications network.
Ethernet wire runs must be less than 328 feet from the nearest network switch. The wired
Ethernet port auto-negotiates a 10/100, full or half duplex connection. Port 16887 must
be open for TCP/IP communications for the I-IPSIU to connect to the Commander server.
Power Input
Route the DC power cord through the strain relief located next to the digital input and
plug into the I-IPSIU. Plug the DC power supply into a 120 Vac outlet after all other
connections have been made. The center connector connects to the positive lead on the
DC supply.
Serial Port
The RS232 Port uses a 6 pin modular connector. Use the serial port to interface a message
board.
Carrier Detect/Rear Input
The Carrier Detect/Rear Input is used when the radio system provides a contact closure
for carrier detect.
Table 2 Carrier Detect/Rear Input
Terminal Description
1 and 2
Input from radio to indicate when radio is in use.
Digital Inputs
The digital input connectors accept 16-24 AWG wire. Route the digital input wires
through the supplied strain relief near the connector or through a user supplied strain
relief. Ensure all high-voltage and low-voltage wiring is physically separated or properly
insulated. The digital inputs are labeled from 1-16. Connect the top pin to the bottom pin
to activate the input. The connection must have a resistance less than 5 k Ohms. All the
pins on the bottom row of the digital inputs are tied to isolated ground.
Relay Outputs
Do not exceed the 10 A, 250 Vac, 30 Vdc resistive load rating specified for the
relay. The contacts must be de-rated for the load type used.