Marway Optima 820 Series User manual

Optima™820 Series
Power Distribution Units
Operating Guide and Reference
Apr 2021 : P/N 501053-000 Rev A

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

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Optima 820 Series
1 General
1.1 Documentation Symbols
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
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 General Description
The Optima 820 Series (model numbers MPD 820XXX) is a family of 48 power distribution units (PDUs) designed for use
with a single-phase supply power of either 120 Vac, 110–240 Vac, or 200–240 Vac.
Each PDU receives mains power through an inlet located at the rear. Power is distributed to all outlets on one or two
branches depending on the model. A variety of inlet and outlet connectors is available.
All models include a circuit breaker, indicator, surge suppression, and Marway’s RCM™ networking control system to
provide individual outlet switching over Ethernet®. Additionally, three options of inlet power monitoring with digital display,
a remote on/off/EPO control bus, and an integral EMI lter are available in a variety of combinations.
All models are constructed of a steel chassis, and designed for xed mounting within a 1U rack space in an EIA-310
compliant rack enclosure.
This documentation is about the hardware elements of the Optima 820 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.
1.4 Product Models &Ratings
Models are primarily organized by what type of power inlet they have. Then by the outlet congurations. All models have
one unswitched utility outlet on the front panel, and eight software switched outlets on the rear panel. Marway’s Standard
Products Catalog includes more detailed tables with exact model number congurations with inlets, outlets, and options
identied.
Group Models* Mains Inlet Inlet Rating Outlets Outlet Ratings
Group 1
MPD 820001
and
MPD 820101
NEMA 5-15P
120 Vac, 50/60 Hz
12 A continuous
(15 A maximum)
NEMA 5-15R • 12 A per outlet (15 A max)
• 12 A unit total (15 A max)
Group 2
MPD 820002
and
MPD 820102
NEMA 5-20P
120 Vac, 50/60 Hz
16 A continuous
(20 A maximum)
NEMA 5-20R • 16 A per outlet (20 A max)
• 16 A unit total (20 A max)
Group 3
MPD 820003
and
MPD 820103
NEMA L5-20P
120 Vac, 50/60 Hz
16 A continuous
(20 A maximum)
NEMA 5-20R • 16 A per outlet (20 A max)
• 16 A unit total (20 A max)
Group 4
MPD 820004
and
MPD 820104
NEMA L6-20P
200–240 Vac, 50/60 Hz
16 A continuous
(20 A maximum)
IEC C13 • 10 A per outlet (10 A max)
• 16 A unit total (20 A max)
Group 5
MPD 820005
and
MPD 820105
IEC C20
110–240 Vac, 50/60 Hz
16 A continuous
(20 A maximum)
IEC C13 • 10 A per outlet (10 A max)
• 16 A unit total (20 A max)
Continued next page.

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Optima 820 Series
Group Models* Mains Inlet Inlet Rating Outlets Outlet Ratings
Group 6
MPD 820006
and
MPD 820106
NEMA L5-30P
120 Vac, 50/60 Hz
24 A continuous
(30 A maximum)
NEMA 5-15R
• 12 A per outlet (15 A max)
• 12 A total for Outlets 1–4
• 12 A total for Outlets 5–8
• 24 A unit total (30 A max)
Group 7
MPD 820007
and
MPD 820107
NEMA L5-30P
120 Vac, 50/60 Hz
242 A continuous
(30 A maximum)
NEMA 5-20R
• 16 A per outlet (20 A max)
• 16 A total for Outlets 1–4
• 16 A total for Outlets 5–8
• 24 A unit total (30 A max)
Group 8
MPD 820008
and
MPD 820108
NEMA L6-30P
200–240 Vac, 50/60 Hz
24 A continuous
(30 A maximum)
IEC C13
• 10 A per outlet (10 A max)
• 12 A total for Outlets 1–4
• 12 A total for Outlets 5–8
• 24 A unit total (30 A max)
* A complete part number follows the format of 820NNN-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
• –NSW = inlet power is not 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
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
Some Optima 820 units can be 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 PDU
vertically. The end user is responsible for ensuring the PDU’s weight is properly supported by the
rack’s infrastructure (which may involve adding support rails).

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Optima 820 Series
3 Operation
Enable
Disable
Return
Controls
Breaker
J 9
J 8
J 10
PRESS
RESET
Ethernet Serial Aux 1 Aux 2
Ethernet Serial Aux 1 Aux 2
Values
Devices
Menu
J 1
Optima RCM
Main
Power
OFFON
EPO Only
Outlets Off
Normal
UCP Control Mode
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 Power breaker can be used to manually cut power from the outlets. However, even with
the Main Power 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 the breaker on the PDU control panel to the off position.
2. If the unit is equipped with the UCP Control Mode switch, whether there is a remote EPO panel connected to the
unit or not, toggle the switch to the up position labeled 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 Main Power
breaker is 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 main breaker is off, power is not actually delivered to the
outlets. Allow about a minute for the software to switch on the relays.
5. Switch the PDU’s Main Power breaker to the On position, and the indicator will be lit. This indicator does not
necessarily mean power is applied to the outlets. It simply means the main breaker is on and power is available to

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Optima 820 Series
all outlets. The internal outlet control relays, and the 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.
If the PDU has the UCP Control Mode toggle switch, and if there is not an EPO panel connected to the PDU, leave the
switch in the up EPO Only 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 Normal 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 7.
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 enables/disables power to all PDU outlets. When Main Breaker is switched on, the Main Power
indicator labeled will be lit. If the PDU is equipped with the UCP Control Mode mode switch, the Off position will
disconnect power from the outlets even if the main breaker is on.
3.3.2 Branches
All models use a 2-pole main breaker. However, that breaker is used a couple of different ways across the product line.
The following descriptions should help to explain the ratings table above.
12/15 A Rated Units (Group 1)
All models with a 12/15 A inlet rating have both line and neutral connected to the breaker. All outlets are on a single
branch. Therefore, the total continuous load for the whole PDU is 12 Amps. With 5-15R outlets, any one outlet can carry

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Optima 820 Series
a continuous load up to 12 Amps (with no draw on other outlets), or a combination of outlets can draw a total of up to 12
Amps for the whole PDU.
16/20 A Rated Units (Groups 2, 3, 4, 5)
All models with a 16/20 A inlet rating have both line and neutral connected to the breaker. All outlets are on a single
branch. Therefore, the total continuous load for the whole PDU is 16 Amps.
For units with 5-20R outlets, any one outlet can carry a continuous load up to 16 Amps (with no draw on other outlets), or
a combination of outlets can draw a total of up to 16 Amps.
For units with C13 outlets, any one outlet can carry a continuous load up to 10 Amps (with no draw on other outlets), or a
combination of outlets can draw a total of up to 16 Amps.
24/30 A Rated Units (Groups 6, 7, 8)
All models with a 24/30 A inlet rating use the two breaker poles to power the line of two branches. Outlets are divided
between the two branches to provide greater total capacity. The total continuous load for all these models is 24 amps for
the whole PDU.
The two branches are mapped as follows:
• Branch 1 — outlets 1–4, and outlet 9
• Branch 2 — outlets 5–8
Branch 2
Enable
Disable
Return
J 8
J 10 J 1
Controls
Breaker
J 9
PRESS
RESET
Ethernet Serial Aux 1 Aux 2
Ethernet Serial Aux 1 Aux 2
Values
Devices
Menu
Optima RCM
Main
Power
OFFON
EPO Only
Outlets Off
Normal
UCP Control Mode
Branch 1
For Group 6 units with 5-15R outlets, each breaker branch is rated for 12/15 A. Any one outlet can carry a continuous
load up to 12 Amps (with no draw on other outlets), or a combination of outlets on one branch can draw a total of up to
12 Amps. The total for the whole PDU is 24 amps (the rating of the inlet connector, which happens to coincide withe the
sum of the branches).
For Group 7 units with 5-20R outlets, each breaker branch is rated for 16/20 A. Any one outlet can carry a continuous
load up to 16 Amps (with no draw on other outlets), or a combination of outlets on one branch can draw a total of up to 16
Amps. The total for the whole PDU is 24 amps (not 32!) which is the rating limit of the inlet connector.
For Group 8 units with C13 outlets, each breaker branch is rated for 12/15 A. Any one outlet can carry a continuous load
up to 10 Amps (with no draw on other outlets), or a combination of outlets on one branch can draw a total of up to 12
Amps. The total for the whole PDU is 24 amps (the rating of the inlet connector, which happens to coincide withe the sum
of the branches).

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Optima 820 Series
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.
3.4 Remote Switching / EPO Option
The Remote Switching / EPO option includes the controls to interface to Marway’s Commander UCP 5000 Remote On/
Off/EPO panels and similar compatible panels. This panel is not required to operate the PDU. Refer to Marway’s Standard
Products Catalog for a list of the specic models which include this option.
Enable
Disable
Return
J 8
J 10 J 1
Controls
Breaker
J 9
PRESS
RESET
Ethernet Serial Aux 1 Aux 2
Ethernet Serial Aux 1 Aux 2
Values
Devices
Menu
Optima RCM
Main
Power
OFFON
EPO Only
Outlets Off
Normal
UCP Control Mode
3.4.1 Remote Mode Switch
The UCP Control Mode is a three-position switch used as a local override to the remote command system. The three
modes are labeled EPO Only, Outlets Off, and Normal. These are named from the perspective of having a remote
control panel connected to the system.
When there is a remote panel connected to the PDU:
• Normal (down position) is the normal operating mode. Outlets 1–8 are subject to the remote panel On/Off/EPO
controls (and, of course, the internal software-controlled relays).
• Outlets Off (center position) causes an internal contactor to disengage power from outlets 1–8. Outlet 9 is not
affected. The PDU will ignore the On/Off/EPO commands of the remote panel. Therefore, Off disconnects power to
outlets 1–8 even if the main breaker is switched on, and even if the internal software-controlled relays are switched
on.
• EPO Only (up position) causes the PDU to ignore the On/Off commands of the remote panel. The EPO signal is still
allowed.
When there is not a remote control panel connected:
• EPO Only (up position) is the normal operating mode. Effectively, this is a Local Control mode.
• Outlets Off (center position) causes an internal contactor to disengage power from outlets 1–8. Outlet 9 is not
affected. The PDU will ignore the On/Off/EPO commands of the remote panel. Therefore, Off disconnects power to
outlets 1–8 even if the main breaker is switched on, and even if the internal software-controlled relays are switched
on.
• Normal (down position) will behave like Off. (With no remote control panel connected, this label is a bit of a
misnomer as this would not be the normal position.)