Data sheet – Procom 4NPA User Manual
Page 4
Data Sheet
4NPA
LF Interface Module
The Front Plate Symbols and their Meaning:
The System Blinker
Addressing from processor taking place
I/O Input/output
BUS output works as push-push operation with the system blinker
BUS input works as push-pull operation with the system blinker
Sending/receiving
status
(depending on set)
LED blinking:
LF signal being sent
LED lit:
LF signal being received
Fuse
(depending on set)
LED off:
Fuse has been triggered
Technical Data:
Operating Voltage:
48 V
(power level)
Operating Voltage:
+/-5 V
(control)
Feeding Current (48 V): Max. 4x 1.5 A to the third-party call stations
Operational Current (+5V ):
Max. 60 mA
LW Interfaces:
4x 300 Hz - 3400 Hz
Temperature Range: 0 °C to 45 °C
Weight:
300 g
Date:
13.03.2009 1 Page:
4/5 Author:
HS
Document-No.:
DB_4NPA_2320_01
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