ADTRAN D4PBCU0 warranty Table A. Basic Features, Practices, General, Installation

		Section 61150052L1-5
	C A U T I O N !	Issue 1, July 1995
PRACTICES		CLEI Code # D4PBCU0_ _ _
	SUBJECT TO ELECTROSTATIC DAMAGE
	OR DECREASE IN RELIABILITY.
	HANDLING PRECAUTIONS REQUIRED.

MODEL ACT PSU

ADVANCED COMMUNICATIONS TERMINAL

POWER SUPPLY UNIT

INSTALLATION/MAINTENANCE

		CONTENTS
1.	GENERAL		1
2.	INSTALLATION		1
3.	CONNECTIONS		2
4.	FACEPLATE INDICATORS		2
5.	MAINTENANCE		2
6.	WARRANTY AND CUSTOMER SERVICE		2
		FIGURES
Figure 1. ADTRAN ACT PSU			1
Figure 2.		Connector Pin Assignments	2
		TABLES
Table A.		Basic Features	1
Table B. ACT PSU Specifications			2
Table C.		Faceplate Indicators	2

1.GENERAL

1.1This practice provides installation and mainte- nance information for the ADTRAN Advanced Communications Terminal Power Supply Unit (ACT PSU). Figure 1 is a drawing of the unit. A detailed product description and specifications can be found in the ADTRAN ACT PSU Description Practice, Section 61150052L1-2. The part number and basic features for the unit are provided in Table A. The specifications for the ACT PSU are shown in Table B.

1.2Revisions to this practice will be summarized in this paragraph.

1.3The ADTRAN ACT PSU is a common module plug-in used in the ACT 2300, 1900, and 1950 channel banks. The unit converts the -48 VDC input to +5 VDC, +12 VDC, and -12 VDC output voltage levels to be used by other common equipment and channel units. The unit is also designed to operate in a parallel, redundant fashion for increased system reliability.

Figure 1. ADTRAN ACT PSU

2.INSTALLATION

2.1Inspect the unit for shipping damage immediately after unpacking it. If damage is discovered, file a claim immediately with the carrier; then contact ADTRAN Customer Service (see subsection 6.2).

2.2The ACT PSU plugs directly into the common card area in the positions marked POWER SUPPLY A or POWER SUPPLY B. To install the ACT PSU, grasp the unit by the faceplate and push it firmly into the backplane connector until the unit is seated. Lock the unit in position using the two faceplate screws.

2.3There are no adjustments or options for the ACT

PSU.

Table A. Basic Features

Unit	Part No.	Features
ACT PSU	1150052L1	Fuses incoming -48 V and 20 Hz
		ringing voltage.
		Converts -48 VDC to regulated +5
		VDC, +12 VDC, and -12 VDC.
		Outputs individually diode
		isolated to allow redundant
		operation.
		Front panel test points for all
		voltages.
		Front panel indicators showing
		the status of the unit.
		Filters -48 V to provide -48 F for
		the rest of the system.

61150.052L1-5A Page 1