48

Electrical Installation

Power Requirements

Alarm

The ICX-250 unit is equipped with an external alarm connector (located on the rear panel of the unit) that will close in the event of an alarm condition such as: T1 failure, internal failure, or power failure. A Red alarm is detected by the T1 interface and responded to by issuing the yellow alarm signal on the T1. The figure below illustrates the alarm connector. It is recommended you use 26 to 24 gauge twisted-pair wire.

Alarm Closure Plug (supplied)

Wire (not supplied)

wire tightening screws (located under adapter)

Small Screwdriver

(not supplied)

Grounding Requirements

Due to the UL regulatory requirements, a mounting stud is required for connection of the AC input earth ground lead to the ICX-250 chassis. The ground lead must be connected to the chassis using a No. 6 nut and lock washer combination. The mounting location is labeled with the IEC 417 No. 5019 symbol () to identify this as the AC earth ground connection point. This mounting stud is located next to the IEC 320 AC input connector.

The loop battery return and the FXS digital and analog circuitry must share a common ground. The access point on the back panel of the ICX- 250 product allows connection to an external battery return lead which will be physically connected to the FXS circuit ground. This access point is provided as part of the DC power input connector.

 

 

 

 

 

 

 

Grounding

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

attached to external ground

 

 

 

 

 

 

Symbol

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No. 6 nut

 

 

 

 

 

 

 

 

 

 

 

location

 

 

 

 

 

 

 

 

 

 

 

 

 

and lock washer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

120 VAC - .6A 60Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ADCP-62-023

Issue 1, September 1998

 

© 1998, ADC Telecommunications, Inc.