Marway Optima 833 Series User manual

Optima™833 Series
Power Distribution Units
Operating Guide and Reference
Sep 2021 : P/N 501055-000 Rev B

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Optima 820 Series
1General 3
1.1 Documentation Symbols (EN) ............................................... 3
1.2 Safety Notices (EN) ................................................................ 3
1.3 Symboles de Documentation (FR) ........................................ 4
1.4 Avis de sécurité (FR) .............................................................. 4
1.5 General Description ............................................................... 5
1.6 Product Models ...................................................................... 5
1.7 Product Ratings...................................................................... 6
2Installation 7
2.1 Installation Notes ................................................................... 7
3Operation 8
3.1 Startup.................................................................................... 8
3.1.1 Startup Without Conguring the Software..................... 8
3.1.2 Startup to Congure the Software ................................. 9
3.2 Ethernet and Serial Control................................................... 9
3.3 Breaker Controls .................................................................... 9
3.3.1 Main Breaker................................................................... 9
3.3.2 Branches........................................................................10
3.3.3 Controls Breaker ...........................................................10
3.4 Remote Switching / EPO Option..........................................11
3.4.1 Remote Override Switch ...............................................11
3.4.2 Remote Bus Connector.................................................12
3.5 Digital Power Meter..............................................................13
3.6 EMI Filter...............................................................................13
4Reference 14
5 Specications 15

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Optima 820 Series
1 General
1.1 Documentation Symbols (EN)
Safety and warning notices as well as general notices in this document are shown in a box with a symbol as follows:
Symbol for a life threatening danger.
Symbol for general safety notices (instructions and damage protection bans) or important
information for operation.
Symbol for general notices.
1.2 Safety Notices (EN)
Mortal danger - Hazardous voltage
• This product is classied as pluggable equipment. The mains inlet plug serves as the disconnect
device. The mains inlet plug shall be installed so that it is easily accessible.
• This product is equipped with a safety ground connection through the mains inlet plug, as well as
a redundant chassis ground screw on the rear panel. Ensure that the product is properly grounded
before applying power.
• Disconnect all power to the product prior to servicing control signal cabling.
• Do not open this product as it contains no user serviceable parts inside. All service concerns
should be directed to Marway Power Solutions.
• If this product is used in a manner which does not comply with this instruction manual, the
protection provided by the equipment may be impaired.
• All work on connections must be carried out under zero voltage (output disconnect), and may only
be performed by qualied and informed persons. Improper actions can cause fatal injury as well as
serious material damage.
• This product is intended for indoor use only and should not be exposed to excess moisture. Avoid
any use of liquids near the equipment, and condition which cause condensation.
• This product is intended for installation in a restricted access location by a skilled person.
• This product is intended for use by an instructed person.
• The equipment is only approved for use within the connection limits stated on the product label.
• The ratings for all output receptacles are marked on the chassis. Be sure to observe the ratings for
all connected load equipment.

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Optima 820 Series
1.3 Symboles de Documentation (FR)
Les consignes de sécurité et avertissements, ainsi que les avis généraux gurant dans ce document sont présentés dans
un encadré avec un symbole, comme illustré ci-dessous.
Symbole pour les avis de danger potentiellement mortel.
Symbole pour les avis de mise en garde pour la sécurité personnelle ou pour la protection de
l’équipement.
Symbole pour les avis importants concernant le fonctionnement.
1.4 Avis de sécurité (FR)
Danger de mort – Tension dangereuse
• Ce produit est classé comme un équipement enchable. La prise d’alimentation secteur sert de
dispositif de déconnexion. La prise d’alimentation secteur doit être installée de manière à être
facilement accessible.
• Ce produit est équipé d’une mise à la terre de sécurité via la prise d’alimentation secteur,
ainsi que d’une vis redondante de mise à la terre du châssis. Assurez-vous que le produit est
correctement mis à la terre avant de le mettre sous tension.
• Débranchez toute alimentation électrique du produit avant d’effectuer l’entretien du câblage des
signaux de commande.
• N’ouvrez pas ce produit, car il ne contient aucune pièce réparable par l’utilisateur. Tous les
problèmes de service doivent être adressés à Marway Power Solutions.
• Si ce produit est utilisé d’une manière non conforme au présent manuel d’instructions, la
protection fournie par l’équipement peut être compromise.
• Tous les travaux sur les connexions doivent être effectués sous une tension nulle et ne doivent
être effectués que par des techniciens qualiés et compétents. Des actions inappropriées peuvent
entraîner des blessures mortelles et des dommages matériels graves.
• Ce produit est conçu pour une utilisation à l’intérieur uniquement et ne doit pas être exposé à
une humidité excessive. Évitez toute utilisation de liquides à proximité de l’équipement et les
conditions susceptibles de provoquer de la condensation.
• Ce produit est destiné à être installé par une personne qualiée dans un endroit à accès restreint.
• Ce produit est destiné à être utilisé par une personne qui a reçu des instructions appropriées.
• L’utilisation de l’équipement est approuvée uniquement dans les limites de connexion indiquées
sur l’étiquette du produit.
• Les valeurs nominales de toutes les prises de sortie sont indiquées sur leur boîtier. Assurez-vous
de respecter les valeurs nominales de tous les équipements de charge raccordés.

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Optima 820 Series
1.5 General Description
The Optima 833 Series (model numbers MPD 833XXX) is a family of fteen power distribution units (PDUs) designed for
use with 120/208 Vac 3-phase supply power.
Each PDU receives mains power through a NEMA L21-30P inlet located on either the front or rear panel depending on the
model. Power is distributed as 120 and/or 208 Vac through eight branch circuits, each outtted with a variety of optional
outlets.
All models include an EMI lter, surge suppression, and remote-EPO feature. All models includes one unswitched NEMA
5-20R duplex receptacle which is not controlled by the remote-EPO feature. There are two styles of outlet congurations.
The rst is where all outlets are 5-20R. These are separated into four circuits of four outlets. The second style includes
three circuits of four 5-20R outlets, two circuits each with one L5 or L6 twist lock outlet, and one L21-20R outlet which is
fed directly from the main breaker (there is no branch breaker).
All models are constructed of a steel chassis, and designed for xed mounting within a 3U rack space in an EIA-310
compliant rack enclosure.
This documentation is about the hardware elements of the Optima 833 Series of PDUs. For detailed
information about the software, you’ll need the Optima RCM User Guide : Software and Basic
Controls Reference located on our website at http://www.marway.com/docs.
1.6 Product Models
Models are primarily organized by what type of power inlet they have. Then by the outlet congurations. All models have
a continuous duty rating of 24 A per phase at the inlet (30 A maximum). All models have two unswitched 5-20R outlets in
addition to the switched outlets noted in the table below.
Inlet Configurations Switched Outlet Configurations
Front
Panel
Straight*
Front
Panel
Flanged*
Rear
Panel
Straight*
Straight
Blade
Outlets
Twist Lock
5-20R L5-20 L5-30 L6-20 L6-30 L21-30
833000 833005 833010 16
833001 833006 833011 12 2 1
833002 833007 833012 12 2 1
833003 833008 833013 12 2 1
833004 833009 833014 12 2 1
* A complete part number follows the format of 833NNN-RRR-DDD where:
• NNN is part of the base part number from the list of models.
• RRR denes the RCM capabilities where:
• –PSW = inlet power is monitored, outlets are switched
• DDD is a dash number where:
• –000 = the remote EPO, if present, is a Normally Open (N.O.) type
• –001 = the remote EPO, if present, is a Normally Closed (N.C.) type

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Optima 820 Series
1.7 Product Ratings
All models of the 833 Series have the same input rating. Outlet ratings vary depending on the outlet type.
Inlet Rating Outlet Ratings
NEMA L21-30P
120/208VAC
3ɸ4P5W
50/60Hz
24 A continuous
30 A maximum
120 Vac, 1ɸ, 16 A continuous (20 A max.) per NEMA 5-20R duplex receptacle
120 Vac, 1ɸ, 16 A continuous (20 A max.) per NEMA L5-20R receptacle
120 Vac, 1ɸ, 24 A continuous (30 A max.) per NEMA L5-30R receptacle
208 Vac, 1ɸ, 16 A continuous (20 A max.) per NEMA L6-20R receptacle
208 Vac, 1ɸ, 24 A continuous (30 A max.) per NEMA L6-30R receptacle
120/208 Vac, 3ɸ, 24 A continuous (30 A max.) per NEMA L21-30R receptacle
24 A continuous (30 A max.) total per phase regardless of receptacle combination
(Outlet combinations are for connection exibility, not for increased current capacity.)

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Optima 820 Series
2 Installation
2.1 Installation Notes
The following guidance must be followed for proper installation of the product.
1. Mounting: This product is designed for mounting in an EIA-310 compliant 19” rack. The user is responsible for
ensuring the mounting method provides adequate structural support for the product, and any attached cables. The
user is also responsible for ensuring the mounting location provides adequate ventilation to dissipate heat generated
during operation of the product. Ensure the product is securely mounted before applying power.
2. Chassis ground: The rear of the chassis includes a redundant chassis ground screw and ground wire. If desired for your
installation location, connect the chassis ground wire to the rack cabinet using an appropriate fastener.
3. Optionally, connect the appropriate cables between the PDU outlets and the equipment being powered by the PDU.
This may be done later according to the startup procedures suitable to the end-user’s equipment and application.
4. If applicable, connect the cabling between the PDU and remote EPO control panel.
5. PDU Main Breaker: Ensure the Main Breaker on the front of the PDU is in the off position before connecting the PDU’s
inlet cable to the facility power source. (It is best to switch all breakers to the off position.)
6. Facility Power Source: The single-phase facility power source for this product must include an overcurrent protective
device capacity as dened in the table below:
Main Inlet Continuous Current
Rating
Mains Protection
Required
NEMA 5-15P 12 A 15 A
NEMA 5-20P 16 A 20 A
NEMA L5-20P 16 A 20 A
NEMA L6-20P 16 A 20 A
IEC C20 16 A 20 A
NEMA L5-30P 24 A 30 A
NEMA L6-30P 24 A 30 A
EN — These products are heavy. The ange mounting ears are designed to hold the PDU securely
against the rack mounting rails, but are NOT designed to support the weight of the product
vertically. The end user is responsible for ensuring the product’s weight is properly supported by the
rack’s infrastructure (which may require adding support rails).
FR — Ces produits sont lourds. Les oreilles de montage à bride sont conçues pour maintenir
solidement l’unité de distribution de l’alimentation contre les rails de montage, mais NE sont
pas conçues pour soutenir le poids du produit verticalement. Il incombe à l’utilisateur nal de
s’assurer que le poids du produit est correctement supporté par l’infrastructure du bâti (ce qui peut
nécessiter l’ajout de rails de support).

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Optima 820 Series
3 Operation
A B C
Ethernet Serial Aux 1Aux 2
Ethernet Serial Aux 1Aux 2
Values
Devices
Menu
Optima RCM
CB 5
OFFON
Main Breaker CB 1
OFFON
CB 2
OFFON
CB 3
OFFON
CB 4
OFFON
OFFON OFFON
EPO Only
Off
Remote
Remote OverrideControls
Breaker
PRESS
RESET
Enable
Disable
Return
J 20 J 21
J 22
J 23
Enable
Disable
Return
Delay
Disable
Return
Rear Panel
Left Side
3.1 Startup
In order to monitor or control the system over Ethernet, it will need to be congured to run on your specic network.
However, to perform an electrical or installation validation test, or even to run the system indenitely without the use of
the network, the unit can be run without rst conguring the software.
By default, the system will enable all outlets, though it may take a minute or so before outlets are switched on after
power is applied. This delay is caused by the software system starting up, and eventually setting the state of each relay
according to congurable settings.
In the sections below, a startup process is described suitable for rst-time network setup, or running without the software.
The Main Breaker can be used to manually cut power from all outlets. However, even with the main
circuit breaker Off, as soon as the inlet of the PDU is plugged into a live facility outlet, the control
system of the PDU is powered, and the software will start running.
3.1.1 Startup Without Conguring the Software
It is assumed the PDU is not plugged into the facility power source.
1. Switch all breakers on the PDU control panel to the Off position.
2. Whether there is a remote EPO panel connected to the unit or not, toggle the Remote Override switch to the up
position EPO Only. (The label has changed over the years, but the up position always functions the same way.)
2.1 This switch position is required if there is no EPO panel.
2.2 If there is a remote panel, this puts the PDU into a local control mode, ignoring the remote On/Off controls, but
allowing the EPO signal.)
3. If there is a facility disconnect switch for the PDU inlet, switch that off.
4. Insert the PDU’s inlet connector into the facility mains power source. If there is a facility power disconnect, switch that
to the On position.
4.1 At this point, the PDU control system is energized. Outlets will not have power, because the PDU’s breakers are
off, but the software will begin its startup process. The default factory setting congures the software to switch
the outlet relays on, however, while the breakers are off, power is not actually delivered to the outlets. Allow about
a minute for the software to switch on the relays.

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Optima 820 Series
5. Switch the PDU’s Main Breaker to the On position, and the ΦA, ΦB, ΦC indicators will be lit. These indicators do not
necessarily mean power is applied to the outlets. They simply means the main breaker is on and power is available to
all the branch breakers. The internal outlet control relays, branch breakers, and remote switching/EPO system are able
to prevent power from reaching the outlets.
6. Switch each branch breaker to the On position. The internal outlet control relays, and remote switching/EPO system
are able to prevent power from reaching the outlets. However, with a factory default setup, power should now be
applied to all outlets.
I there is not an EPO panel connected to the PDU, leave the Remote Override switch to the up position.
If there is a remote EPO panel connected to the PDU, such as Marway’s Commander UCP 5000, ip the switch to the
down Remote position. This system is discussed in detail farther down, as well as in the Optima RCM User Guide :
Software and Basic Controls Reference located on our website.
The PDU can continue to be used in this way as long as needed. The software can be congured later, or can be left
uncongured if it will not be used.
3.1.2 Startup to Congure the Software
The document Optima RCM User Guide : Software and Basic Controls Reference located on our website at http://www.
marway.com/docs is the complete resource for the process of conguring the network settings, and other software
features of the PDU. Obtain that document, and review the Getting Started chapter.
In effect, prepare the Serial and Ethernet connections to the PDU as described in the Software Guide, then use the
startup process described above in “3.1.1 Startup Without Conguring the Software” on page 8.
3.2 Ethernet and Serial Control
The document Optima RCM User Guide : Software and Basic Controls Reference located on our website at http://www.
marway.com/docs is the complete resource for how to setup, congure, and operate the Optima RCM software over serial,
Telnet, SSH, HTTP, SNMP, and RESTful API.
The Ethernet connection supports 10/100 Base-T, IPv4 DHCP and manual addressing. It is recommended to use a
manual address, or DHCP in conjunction with MAC ID reservations so that the IP address stays consistent.
The Serial interface is RS-232 implemented in an RJ45 connector. A protocol conversion cable with a USB connection at
one end and an RJ45 at the other end is ideal for connecting a computer to the Serial port. Marway offers these cables as
part number 311118-000. They can also be found on many online cable retailer web sites.
3.3 Breaker Controls
3.3.1 Main Breaker
The Main Breaker prevents or enables power to all PDU outlets. When Main Breaker is switched on, the indicators
labeled ΦA, ΦB, ΦC will be lit.
This breaker includes a breaker guard with a lockout feature. Attaching a small padlock (not included) through the guard
hole will prevent the breaker from being switched on.
Be aware that when the Remote Override mode switch is in the Off position, power is disconnected from the switched
outlets even if the main breaker is on.

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Optima 820 Series
3.3.2 Branches
The 833 series has two branch breaker congurations: one with ve branches, and one with six branches. All are rated
at 16 A continuous load (20 A maximum). The breaker assignments are printed on the rear panel near the outlets. In the
diagram below these markings have been exaggerated. (Note: in the six-branch conguration, the names are CB1 through
CB 5 and CB 7, there is no CB 6.)
J 22
J 23
Enable
Disable
Return
Delay
Disable
Return
J 17
J 1J 4
(CB 1)
J 13
(CB 4)
J 15
J 14
J 16
J 8
(CB 2)
J12
(CB 3)
J 5
J 9 J 18
(CB 5)
J 22
Enable
Disable
Return
J 15
(Main)
Choice of
twist-lock
Choice of
twist-lock
J 23
Delay
Disable
Return
J 1
J 5
J 9
J 16
(CB 7)
J 17
J 13
(CB 4)
J 14
(CB 5)
J 4
(CB 1)
J 8
(CB 2)
J 12
(CB 3)
3.3.3 Controls Breaker
There is a small pop-out breaker protecting the control system components. This isn’t used during normal operation. If it
were to pop out, try pressing it back in. If it fails to stay in, there may be failure in one of the controls which is shorted, or
is drawing excessive current. This would likely indicate the need for an RMA repair. Contact Marway support.