Clear-Com HLI-FBS - Manual (Page 18)

Key to HMS-4X Main Station: Rear panel
Feature Description
A
Power supply with metal cable restrainer. The power supply operates at 100 - 240
VAC / 50-60Hz /
250 watts / T 3.15A H 250 V.
B
Control I/O (25 way female D-type). Use to connect up to 4 relay control outputs or 4
optically isolated control inputs (see 5.5 Configuring the Control I/O).
Pin Function Pin Function
Pin 1 Relay 1 NC Pin 14 Relay1 Pole
Pin 2 Relay 1-NO Pin 15 Relay 2 NC
Pin 3 Relay2-Pole Pin 16 Relay 2-NO
Pin 4 Relay 3 NC Pin 17 Relay3 Pole
Pin 5 Relay 3-NO Pin 18 Relay 4 NC
Pin 6 Relay4-Pole Pin 19 Relay 4-NO
Pin 7 Pin 20 +5V
Pin 8 GND Pin 21 +5V
Pin 9 GND Pin 22 Opto 1-
Pin 10 Opto 1+ Pin 23 Opto 2-
Pin 11 Opto 2+ Pin 24 Opto 3-
Pin 12 Opto 3+ Pin 25 Opto 4-
Pin 13 Opto 4+
Table 6: Control I/O pin out
18 HelixNet Partyline User Guide