Allied Telesis MMCR18 User manual

613-002372 Rev. D
MMCR18
Media Converter Rack-mount Chassis
Installation Guide

Copyright  2023 Allied Telesis, Inc.
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesis, Inc.
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Allied Telesis, Inc. reserves the right to make changes in specifications and other information contained in this document
without prior written notice. The information provided herein is subject to change without notice. In no event shall Allied
Telesis, Inc. be liable for any incidental, special, indirect, or consequential damages whatsoever, including but not limited to
lost profits, arising out of or related to this manual or the information contained herein, even if Allied Telesis, Inc. has been
advised of, known, or should have known, the possibility of such damages.

3
Electrical Safety and Emissions
Standards
This section contains the following:
“US Federal Communications Commission”
“Industry Canada”
“Emissions, Immunity and Electrical Safety Standards” on page 4
“Translated Safety Statements” on page 4
US Federal Communications Commission
Radiated Energy
Note
This equipment has been tested and found to comply with the limits for a Class A digital device
pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with this instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own
expense.
Note
Modifications or changes not expressly approved of by the manufacturer or the FCC, can void
your right to operate this equipment.
Industry Canada
Radiated Energy
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.

4
Emissions, Immunity and Electrical Safety Standards
RFI Emissions FCC Class A, EN55032 Class A, CISPR 22 Class A, RCM, VCCI, UKCA, ICES
Warning
In a domestic environment this product may cause radio interference in which case the user
may be required to take adequate measures.  E84
Immunity EN55035, EN61000-3-2, EN61000-3-3
Electrical Safety UL60950-1 (CULUS), EN62368-1 (TUV), RoHS
Translated Safety Statements
Important: The  indicates that translations of the safety statement are available in the PDF
document Translated Safety Statements posted on the Allied Telesis website at
alliedtelesis.com/services-and-support.

5
Table of Contents
Preface ..................................................................................................................................................................................9
Safety Symbols Used in this Document ........................................................................................................................10
Contacting Allied Telesis ...............................................................................................................................................11
Chapter 1: Overview ..........................................................................................................................................................13
Introduction....................................................................................................................................................................14
Front Panel.............................................................................................................................................................14
Rear Panels ...........................................................................................................................................................15
Auxiliary Power Supply Slot ...................................................................................................................................15
Fan Unit..................................................................................................................................................................16
LEDs..............................................................................................................................................................................17
Alarm Out Connector on the Fan Unit ...........................................................................................................................18
Chapter 2: Installation .......................................................................................................................................................21
Setting up the Chassis ..................................................................................................................................................22
Reviewing Safety Precautions.......................................................................................................................................23
Preparing the Site..........................................................................................................................................................26
Unpacking the Package Contents .................................................................................................................................27
Chassis Package ...................................................................................................................................................27
Power Supply Package ..........................................................................................................................................28
Installing the Chassis on a Desktop ..............................................................................................................................30
Installing the Power Supply Unit into the Chassis .........................................................................................................31
Removing the Cover Plate from the Chassis.................................................................................................................33
Installing the Chassis in a 19-inch Equipment Rack......................................................................................................34
What to Prepare .....................................................................................................................................................34
Installing the Chassis in an Equipment Rack .........................................................................................................34
Installing a Media Converter in the Chassis ..................................................................................................................36
Installing a Blank Panel .................................................................................................................................................38
Powering on an AC-Powered Chassis ..........................................................................................................................39
Wiring and Powering on a DC-Powered Chassis..........................................................................................................40
Chapter 3: Troubleshooting ..............................................................................................................................................45
Appendix A: Technical Specifications .............................................................................................................................47
Physical Specifications..................................................................................................................................................47
Environmental Specifications ........................................................................................................................................47
Electrical Ratings...........................................................................................................................................................47
Relay Contact Ratings (Alarm Out Connector on the Fan Unit)....................................................................................47

Contents
6

7
List of Figures
Figure 1: Full Populated MMCR18 Chassis with Rack-mount Brackets Attached................................................................14
Figure 2: MMCR18 Front Panel............................................................................................................................................14
Figure 3: Back Panels ..........................................................................................................................................................15
Figure 4: MMCR18FAN Unit.................................................................................................................................................16
Figure 5: LEDs on the Front Panel .......................................................................................................................................17
Figure 6: Example of Alarm Out Usage on the Fan Unit ......................................................................................................18
Figure 7: Back Panel ............................................................................................................................................................31
Figure 8: Inserting the AC Power Supply Unit into Slot A.....................................................................................................31
Figure 9: Inserting the DC Power Supply Unit into Slot A.....................................................................................................31
Figure 10: Combinations of Two Power Supply Units ..........................................................................................................32
Figure 11: Front Panel with the Cover Panel........................................................................................................................33
Figure 12: Removing the Cover Panel..................................................................................................................................33
Figure 13: Attaching the Rack-Mount Brackets ....................................................................................................................34
Figure 14: Installing the Chassis in a Rack...........................................................................................................................35
Figure 15: Attaching the Sliding Carrier on a Media Converter ............................................................................................36
Figure 16: Media Converter on the Sliding Carrier ...............................................................................................................36
Figure 17: Installing the Media Converter in the Chassis .....................................................................................................37
Figure 18: Tightening the Captive Screw on the Sliding Carrier...........................................................................................37
Figure 19: Installing the Blank Panel to Cover an Empty Slot ..............................................................................................38
Figure 20: Locating the Terminals on the DC Terminal Block ..............................................................................................40
Figure 21: Stripped Wire.......................................................................................................................................................41
Figure 22: Connecting the Frame Ground Wire....................................................................................................................42

Figures
8

9
Preface
This guide contains instructions on how to install an MMCR18 Media
Converter Rack-mount Chassis.
This preface contains the following sections:
“Safety Symbols Used in this Document” on page 10
“Contacting Allied Telesis” on page 11

MMCR18 Media Converter Chassis Installation Guide
10
Safety Symbols Used in this Document
This document uses the following conventions:
Note
Notes provide additional information.
Caution
Cautions inform you that performing or omitting a specific action
may result in equipment damage or loss of data.
Warning
Warnings inform you that performing or omitting a specific action
may result in bodily injury.

Preface
11
Contacting Allied Telesis
If you need assistance with this product, visit the Allied Telesis web site at
www.alliedtelesis.com/services.

MMCR18 Media Converter Chassis Installation Guide
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13
Chapter 1
Overview
This chapter provides information about the MMCR18 Media Converter
Rack-mount Chassis and contains the following sections:
“Introduction” on page 14
“LEDs” on page 17
“Alarm Out Connector on the Fan Unit” on page 18

MMCR18 Media Converter Chassis Installation Guide
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Introduction
The MMCR18 rack-mount chassis provides rack-mount or desktop
installation for up to 18 MMC series media converters. The chassis is
available in both AC and DC power supply units to install.
Figure 1 shows a fully populated chassis with rack-mount brackets
attached. All products are connected to power through the power supply
and power backplane of the chassis.
Figure 1. Full Populated MMCR18 Chassis with Rack-mount Brackets
Attached
Front Panel Figure 2 shows the front panel of the MMCR18 chassis.
Figure 2. MMCR18 Front Panel
The LEDs on the front provide information about the status of the system,
chassis temperature, power supplies, and fan installed in the rear. For
more information, see “LEDs” on page 17.

Chapter 1: Overview
15
Rear Panels Figure 3 shows the back panels of the chassis with one AC or DC power
supply unit installed. The chassis is not shipped with a power supply unit.
You must install at least one AC or DC power supply unit.
Note
You must purchase the MMCR-PWR-AC or MMCR-PWR-DC power
supply unit separately.
Figure 3. Back Panels
Auxiliary Power
Supply Slot
You must purchase and install the MMCR-PWR-AC or
MMCR-PWR-DC power supply unit in the PSU1 slot to use the MMCR18
chassis. The PSU2 slot is for an auxiliary power supply. You can purchase
two power supply units and install one in the PSU1 slot and the other in the
PSU2 slot.
Note
You can install two AC power supply units, two DC power supply
units, or the combination of one AC and one DC power supply units
in the same chassis.
If one power supply fails, the LED of the corresponding power supply unit
on the front panel goes out and the entire power load is shifted to the other
power supply unit. The power supplies are hot-swappable.
Power Supply Slot A Auxiliary Power Supply Slot B
AC Model
DC Model
Power Supply Slot A Auxiliary Power Supply Slot B

MMCR18 Media Converter Chassis Installation Guide
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Fan Unit The MMCR18 chassis is shipped with the MMCR18FAN unit. This unit
includes two fans: FAN1 and FAN2, as shown in Figure 4.
Figure 4. MMCR18FAN Unit
The fan unit maintains operating temperatures by drawing cooling air into
the chassis. The fan unit has an Alarm Out Connector, which can be
connected to an external alert device. For more information, see “Alarm
Out Connector on the Fan Unit” on page 18.

Chapter 1: Overview
17
LEDs
The MMCR18 chassis have LEDs on the front panel as shown in Figure 5.
Figure 5. LEDs on the Front Panel
Table 1 describes the LEDs on the front of the MMCR18 chassis.
Table 1. LEDs on the Front Panel
LED Status Description
FAULT
(Red)
On An error occurred on a power supply unit or fan unit.
Off The power supply and fans are operating normally.
TEMP
(Yellow)
On The temperature is outside the specified temperature
range.
(See “Environmental Specifications” on page 47.)
Off The temperature is in the normal operating range.
PSU1
(Green)
On The power supply unit in PSU1 is providing power.
Off The power supply unit in PSU1 is not providing power.
PSU2
(Green)
On The power supply unit in PSU2 is providing power.
Off The power supply unit in PSU2 is not providing power.
FAN1
(Green)
On The FAN1 is operating normally.
Off An error occurred on the FAN1 unit.
FAN2
(Green)
On The FAN2 is operating normally.
Off An error occurred on the FAN2 unit.
FAULT TEMP PSU1 PSU2 FAN1 FAN2

MMCR18 Media Converter Chassis Installation Guide
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Alarm Out Connector on the Fan Unit
The MMCR18FAN unit is equipped with the 2-pin Alarm Out connector,
which can be connected to an external alert device. You can use this
external device to alert you a fan failure. Here are two examples of alert
devices for the Alarm Out connector:
Strobe light
Buzzer
Note
Alert devices are not available from Allied Telesis.
The Fan unit does not supply power on the Alarm Out circuit. Instead, the
circuit is an on or off dry contact relay. When an alarm condition occurs,
the Fan unit changes the circuit from close (on) to open (off). The circuit
remains open until the alarm is resolved, at which point the Fan unit
automatically closes it again. The processes to resolving alarms can vary.
The external alert device must provide the necessary power for the circuit
and be able to monitor the circuit for when it is closed or open.
The minimum switching load of the contacts is 10mVDC, 10uA.
Note
Perform confirmation testing with the actual load since reference
values may vary according to switching frequencies, environmental
conditions, and expected reliability levels.
For maximum contact ratings, see “Relay Contact Ratings (Alarm Out
Connector on the Fan Unit)” on page 47.
Figure 6 shows an Alarm Out connector configuration example.
Figure 6. Example of Alarm Out Usage on the Fan Unit

Chapter 1: Overview
19
The Alarm Out connector is connected to a strobe light. When the
temperature of the Fan unit exceeds the maximum operating temperature
and stops operating, it changes the circuit from closed to open. This
change triggers the strobe light to turn on. When the temperature of the
Fan unit goes down to the normal operating range and the Fan unit
operates normally, it changes the circuit from open to closed. This change
triggers the strobe light to turn off.

MMCR18 Media Converter Chassis Installation Guide
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