MAX Technical Specifications

This appendix describes specifications for different facets of the MAX, and discusses cabling requirements.

General specifications

Battery

The MAX contains an internal 3V lithium battery. The normal operating life of this battery exceeds five years.

Only trained engineers authorized by Ascend should open the MAX unit's case for testing, maintenance, installation, or any other purpose. Furthermore, only trained engineers should replace MAX components.

Warning: The battery can explode if incorrectly replaced. Replace the battery only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions.

ATTENTION: IL Y A DANGER D'EXPLOSION S'IL Y A REMPLACEMENT INCORRECT DE LA BATTERIE. REMPLACER UNIQUEMENT AVEC UNE BATTERIE DU MÉME TYPE OU D'UN TYPE RECOMMANDEÉ PAR LE CONSTRUCTEUR. METTRE AU RÉBUT LES BATTERIES USAGÉES CONFORMÉMENT AUX INSTRUCTIONS DU FABRICANT.

Power requirements

The MAX unit's source power requirements are listed in

Table B-1. MAX source power requirements


Element	Value
Voltage	90-240 VAC
Phase	Single
Frequency	47-63 Hz

The power requirements for the redundant power standard MAX are listed in
Table B-2. Redundant power standard MAX requirements

Element

Value

Voltage

90-135 VAC/180-270 VAC

Phase

Single

Frequency

47-63 Hz

Input Power

MAX 6000: 80W (nominal)-200W (maximum)
Standard MAX: 80W (nominal)-120W (maximum)

Fuse

5 Amp slow-blow for 120 VAC input
2.5 Amp slow-blow for 240 VAC input

Table B-2.

The redundant power requirements for the MAX 6000 are listed in
Table B-3. Redundant power MAX 6000 requirements

Element

Value

Voltage

-43 to -60 VDC

Input Power

MAX 6000: 80W (nominal)-200W (maximum)
Standard MAX: 80W (nominal)-120W (maximum)

Fuses

7.5 Amp GMT (two fuses)

Table B-3.

The MAX unit's configuration profiles are stored in battery-protected memory. When the MAX is turned off, the profiles are not lost.

Note: Use a protected AC power source, or add surge protection between the power source and the MAX.

Environmental requirements

For best results, you should house the MAX in a room with constant temperature and humidity. In general, cooler environments are better, and an operating temperature of 32° to 104° Fahrenheit (0° to 40° Celsius) is recommended. Storage temperatures of -40° to 176° Fahrenheit (-71.4° to 80° Celsius) are acceptable.

Humidity should be high enough to prevent accumulation of static electricity, but low enough to prevent condensation. An operating relative humidity of up to 90% is acceptable.

You can operate the MAX at altitudes of 0 to 14800 ft. (0-4500 m).

The MAX base system weighs 15 lbs (6.81 kg); a fully loaded system weighs 30 lbs (13.6 kg). The MAX has these dimensions: 3.0" x 17" x 12" (8.9 cm x 43.2 cm x 30.5 cm).

The base system of a redundant power standard MAX or MAX 6000 weighs 41 lbs (18.6 kg); a fully loaded system weighs 56 lbs (25.5 kg). The redundant power MAX has the dimensions 7.0" x 17.5" x 12" (17.8 cm x 44.5 cm x 30.5 cm).

Alarm relay operating specifications

On the back panel of the Ascend unit is a pair of alarm-relay terminal-block contacts that remains open during normal operation. The contacts close during loss of power, hardware failure, or reset.

The maximum rated load for the alarm relay is:

1 amp at 30 Vdc.
0.6 amp at 60 Vdc.
0.6 amp at 60 Vac.

Caution: To reduce the risk of electric shock, do not connect the alarm circuit to a device with an output exceeding 30 Vrms, 42.4 Vpeak, or 60 Vdc.

techpubs@eng.ascend.com

Copyright © 1998, Ascend Communications, Inc. All rights reserved.