Seagate ST3390N Guía de instalación descargar pdf (Pagina 149)

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101

Installing, cabling, and configuring peripheral devices 10-27

Bix block cabling for peripheral devices

Standard 1.0 Modular Option EC Installation and Maintenance Guide November 1999

Bix block cabling for peripheral devices

Introduction

The following section outlines the Bix block designations and

cabling for the peripheral devices. You can cable peripherals

through the main distribution frame (MDF) as an alternative to

using the 4- and 5-port fanout cables for any module; this is the

normal method of cabling the alarm connections from module

MM0. See “Connecting the alarm to the main distribution

frame” on page 10-30.

To wire any of these three sets of connections to the MDF,

install an NEA25B cable to the appropriate Meridian Mail I/O

panel connector.

“ALM/MDM and 4- and 5-port RS-232 Bix block tip, ring, pin,

and pair colors” on page 10-28 lists tip, ring, pin, and pair color

information for the ALM/MDM cable, and the equivalents for

the 4- and 5-port fanout cables.

Alarms

Two Form-C dry contact relays are provided for connection to

customer-provided alarms. Each relay contact is rated at 0.5

amperes and 150 V DC. The major alarm contacts can be

triggered by the Enhanced MMP40 processor, a board reset, a

power off condition, or a watchdog timeout (which has a fixed

128-second timeout interval).

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Seagate ST3390N Guía de instalación Pagina 149

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