Marway Optima 533 Series User manual

Optima™533 Series
Power Distribution Units
Operating Guide and Reference
Apr 2021 : P/N 501035-000 Rev B

Page 2
Optima 533 Series
1General 3
1.1 Documentation Symbols........................................................ 3
1.2 Safety Notices......................................................................... 3
1.3 General Description ............................................................... 4
1.4 Product Models....................................................................... 4
1.5 Product Ratings ...................................................................... 5
2Installation 6
2.1 Installation Notes.................................................................... 6
3Operation 7
3.1 Startup .................................................................................... 7
3.2 Breaker Controls..................................................................... 7
3.2.1 Main Breaker................................................................... 7
3.2.2 Branch Breakers ............................................................. 7
3.2.3 Controls Breaker ............................................................. 8
3.3 EPO Controls........................................................................... 8
3.3.1 Remote Mode Switch...................................................... 8
3.3.2 Remote Bus Connectors................................................. 9
4Reference 11
5 Specications 12

Page 3
Optima 533 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.

Page 4
Optima 533 Series
1.3 General Description
The Optima 533 Series (model numbers MPD 533XXX) 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. Circuit 1 of all models includes one
unswitched NEMA 5-20R duplex receptacle (J1) which is not controlled by the remote-EPO feature. Circuits 2–6 are also a
5-20R duplex subject to the remote control bus (EPO). Circuits 7 and 8 are either the same as 2–6, or are one outlet each
of either L5-20, L5-30, L620, or L6-30. Some models feature a “9th circuit” with an L21-30R 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.
1.4 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).
Inlet Configurations Outlet Configurations
Front
Panel
Straight*
Front
Panel
Flanged*
Rear
Panel
Straight*
Straight
Blade
Duplex
Twist Lock
5-20R L5-20 L5-30 L6-20 L6-30 L21-30
533000 533005 533010 8
533001 533006 533011 6 2 1
533002 533007 533012 6 2 1
533003 533008 533013 6 2 1
533004 533009 533014 6 2 1
* Each model has one of two “dash number” designators:
• –000 = the remote EPO is a Normally Open (N.O.) type
• –001 = the remote EPO is a Normally Closed (N.C.) type

Page 5
Optima 533 Series
1.5 Product Ratings
All models of the 533 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.)

Page 6
Optima 533 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 three-phase facility power source for this product must include an overcurrent protective
device with a maximum rating of 30 Amps.
The Optima 533 is a heavy product. 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).

Page 7
Optima 533 Series
3 Operation
Optima
Main Breaker CB 8CB 7CB 6CB 5CB 4CB 3CB 2CB 1
AB C
PRESS
RESET
Local/On
Off
Remote
Outlet Control Bus
Enable
Disable
Return
J 9
J 10
J 10
J 11
OFFON OFFON OFFON OFFON OFFON OFFON OFFON OFFON
OFFON OFFON
J 11
J 12
J 12
J 13
Enable
Disable
Return
Delay
Disable
Return
Rear Panel • Left Side
3.1 Startup
Switch all breakers on the PDU control panel to the off position. Switch the Outlet Control Bus mode switch to the up
position labeled Local/On. (This forces the PDU into local mode, ignoring any existing remote panel for now.)
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. At this point, the PDU is energized, though all indicator lamps will be off.
Switch the PDU’s Main Breaker to the On position, and the ΦA, ΦB, ΦC indicators will be lit. All branch circuits are ready
for use. As each branch breaker is switched on (e.g. CB1, CB2, etc.), the indicator above it will be lit.
If there is not an EPO panel connected to the PDU, leave the switch in the up Local/On position. If there is remote EPO
panel connected to the PDU, such as Marway’s Commander UCP 5000, ip the Outlet Control Bus switch to the down
Remote position.
3.2 Breaker Controls
The PDU has three distinct groups of controls: the main breaker, the branch breakers, and the remote EPO system.
3.2.1 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.
3.2.2 Branch Breakers
All Optima 533 models include eight branch breakers. All are rated at 16 A continuous load (20 A maximum). CB1 is for J1
(both outlets of the duplex). CB2 is for J2, et cetera. There is no breaker for the L21-30 outlet J9 on the models where this
outlet is included. Each breaker has an unlabeled, corresponding indicator just above it. When the breaker is in the on
position, the corresponding lamp will be lit.

Page 8
Optima 533 Series
J 11 J 12
Enable
Disable
Return
Delay
Disable
Return J 2 J 1
J 3J 4J 5J 6J 7J 8
J 12 J 13
Enable
Disable
Return
Delay
Disable
Return
J 9
J 7
J 8
J 2 J 1
J 3J 4J 5J 6
Choice of
twist-lock
Choice of
twist-lock
CB1CB2CB3CB4CB5CB6CB7CB8
Main
Breaker
whether on
front or rear
always
whole
duplex
3.2.3 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.
3.3 EPO Controls
All Optima 533 PDUs include 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.
3.3.1 Remote Mode Switch
The Outlet Control Bus has a three-mode switch which is used as a local override to the overall remote command
system. The three modes are labeled Local/On, Off, and Remote.
When there is not a remote control panel connected:
• Local/On (up position) is the normal operating mode.
• Off (center position) causes an internal contactor to disengage power from all branches except for the CB1/J1 branch
which continues to be powered. Therefore, Off disconnects power to almost all outlets even if the breakers are
switched on.
• Remote (up position) will behave like Off.
When there is a remote panel connected to the PDU:

Page 9
Optima 533 Series
• Remote (down position) is the normal operating mode. Outlets are subject to the branch breakers, the main breaker,
and the upstream remote panel On/Off/EPO controls.
• Local/On (up position) causes the PDU to ignore the On/Off/EPO commands of the remote panel. The local breakers
will then be in sole control of the outlets.
• Off (center position) causes an internal contactor to disengage power from all branches except for the CB1/J1 branch
which continues to be powered. The PDU will ignore the On/Off/EPO commands of the remote panel. Therefore, Off
disconnects power to almost all outlets even if the breakers are switched on.
If there will not be a remote On/Off/EPO panel connected to the PDU, switch the Outlet Control
Bus mode switch to the up position labeled Local/On. This is the normal operating position for any
unit with no remote panel. (The other positions will prevent power from getting to the outlets.)
Whether there is a remote control panel connected or not, toggling the Outlet Control Bus mode
switch to the center position labeled Off will disconnect power to almost all outlets even if the
breakers are switched on. The Off mode causes an internal contactor to disengage power from all
branches except for the CB1/J1 branch which continues to be powered.
3.3.2 Remote Bus Connectors
There are a total of four connectors, but note that there are two types of connectors. Based on the label of the top pin,
we call the two types the standard “enable” type, and the alternative “delay” type. There are three of the standard type (2
front, 1 back), and one of the delay type (on the back).
Multiple PDUs can be wired in a daisy-chain fashion to be operated by a single remote panel.
Remote Bus connectors have two different numbering systems depending on the model. (Why? A convention from the
military equipment realm is that all connectors are labeled sequentially. Since some models have 8 outlet junctions, and
some have 9 outlet junctions, the subsequent connectors for the Remote Bus have labels of either J9, J10, J11, J12, or
J10, J11, J12, J13.)
Models with J1 through J8 Outlets
The standard enable connectors are J9, J10, J11. These are all wired in parallel.
The delay connector is J12. When used, the On signal from the remote panel is delayed by about 2 seconds.
Models with J1 through J9 Outlets
The standard enable connectors are J10, J11, J12. These are all wired in parallel.
The delay connector is J13. When used, the On signal from the remote panel is delayed by about 2 seconds.

Page 10
Optima 533 Series
J 11 J 12
Enable
Disable
Return
Delay
Disable
Return J 2 J 1
J 3J 4J 5J 6J 7J 8
Input
J 12 J 13
Enable
Disable
Return
Delay
Disable
Return
J 9
J 7
J 8
J 2
J 3J 4J 5J 6
J 11 J 12
Enable
Disable
Return
Delay
Disable
Return J 2 J 1
J 3J 4J 5J 6J 7J 8
Input
J 12 J 13
Enable
Disable
Return
Delay
Disable
Return
J 9
J 7
J 8
J 2
J 3J 4J 5J 6
Enable
Disable
Return
Enable
Return
Outlet Control Bus
J1 J2 J4 J5J3
Remote EPO Input Outlet Control Bus
Aux 2
Marway Commander UCP 5000 Remote EPO
Using the “Enable” connectors, each PDU receives the On signal at the same time. Using the “Delay” connector to connect to the second PDU, the second PDU will receive
the On signal approximately 2 seconds after the first PDU.
Enable
Disable
Return
Enable
Return
Outlet Control Bus
J1 J2 J4 J5J3
Remote EPO Input Outlet Control Bus
Aux 2
3.3.2.1 Remote Bus Connector Wiring
The 3-pin connectors use two low-voltage signals as follows:
• Shorting the Enable pin to the Return pin with a dry contact will trigger the remote bus Enable signal.
• Shorting the Disable pin to the Return pin with a dry contact will trigger the remote bus Disable signal.
• Note that the Disable signal has priority, so that if both signals are triggered at the same time, the net result will be
Disable.
For additional information about Marway’s Commander UCP remote panel, visit the web site at
http://www.marway.com/commander-epo-panels

Page 11
Optima 533 Series
4 Reference
Standard Features
(1) Main 24/30 A breaker and phase-power indicators.
(2) Branch 16/20 A circuit breakers for outlets. CB1 is
for J1. CB2 is for J2, et cetera. There is no breaker
for J9 on the models where J9 is included.
(3) Internal controls 1 A, push-type breaker.
(4) Remote EPO mode switch. A three-position toggle
provides manual control over the remote EPO mode.
The Local/On position forces all outlets powered
on, and only the remote EPO button will have affect
(not the remote on/off). The Off position forces all
outlets off, and the remote panel has no affect. The
Remote position allows full control of the outlets by
the remote panel.
(5) Front panel remote EPO control bus interface. Two
connectors enable the PDU to be daisy chained
between a remote EPO panel (such as Marway’s
UCP) and another PDU, or between two PDUs.
(6) Rear panel remote EPO interface. A third connector
for when a rear connection is more convenient.
(7) Rear panel remote EPO delay interface. When the
Enable signal of a remote panel is triggered, the
signal is propagated immediately to all downstream
devices through the connectors identied by (5)
and (6). This connector (7) introduces a delay of 2
seconds before forwarding the Enable signal. By
daisy chaining PDUs with the delay connectors,
a staggered start can be created between each
downstream PDU.
(13) Mounting brackets. May be mounted to yield a
“ush,” front-recessed, rear-facing, or rear-recessed
position of the chassis relative to the rack’s
mounting rails. The brackets include a cutout to
allow an inlet cable to be directed into the interior
of the rack when the brackets are mounted for a
recessed-chassis position. The brackets may also
be removed for table top operation, or adaptation of
the end user’s own brackets.
Optional Congurations
(8) A 5-20R duplex at J1 is standard on all models. The
location of the J1 duplex and the Inlet connector (9)
are swapped on some models. Therefore, the inlet
can be located on the rear panel or the front panel.
(9) Power inlet. Some models include a recessed male
connector as shown. Some models include a strain-
relieved 9-foot cable with an L21-30 plug.
(10) All models include at least six 5-20R duplexes.
(11) On some models, J7 and J8 are twist lock
connectors (with a choice of L5-20, L5-30, L6-20,
L6-30 where both are the same). On other models,
J7 and J8 are 5-20R duplexes.
(12) Models which include twist locks for J7 and J8 will
also include J9 which is always an L21-30 providing
pass-through power from the main breaker.
Input
Front Only
J 12 J 13
Enable
Disable
Return
Delay
Disable
Return
J 9
J 7
J 8
J 2 J 1
J 3J 4J 5J 6
19.00"
17.12"
9.00"
0.75"
1.75"
1.75"
3.47"
1 2 3 5 4913
811 1012
6
7
Optima
Input
Main Breaker CB 8CB 7CB 6CB 5CB 4CB 3CB 2CB 1
A B C
PRESS
RESET
Local/On
Off
Remote
Outlet Control Bus
Enable
Disable
Return
J 10 J 11
OFFON OFFON OFFON OFFON OFFON OFFON OFFON OFFON
OFFON OFFON
Optional Inlet Connectors
Input
Front or Rear

Page 12
Optima 533 Series
5 Specications
Remote EPO (standard)
• Panel connector: AMP #1-480304-0, 250 Vac, 4 A
maximum.
• Mating cable connector: AMP #1-480305-0.
• Where Outlet Control Bus is labeled starting with J9,
the J9, J10, J11 connectors are wired in parallel. J12
delay the enable signal.
• Where Outlet Control Bus is labeled starting with J10,
the J10, J11, J12 connectors are wired in parallel.
J13 delay the enable signal.
• All outlets other than J1 are managed by the Remote
Control Bus.
• J1 outlets (and outlet J9 if present) are always
powered relative to the Main Breaker state.
Pin 3 : Return
Power On
Power Off,
EPO Active
Pin 2 : Disable
Pin 1 : Enable
J1
Marway UCP, or
customer supplied circuit
Remote On EPO Override
Enable Outlet
Groups B & C
Marway Optima PDU
Optima Remote EPO Circuit
Inlet Voltage and Current
• All models 120/208 Vac, 50/60 Hz, three-phase wye
• All models 24 A continuous load / 30 A maximum
Overload Protection (standard)
• All models include a four-pole main circuit breaker
wired with all three phases and neutral passing
through the breaker.
• All branch breakers are UL 489, 16 A continuous load
(20 A maximum)
• Based on NEC regulations, traditional load ratings
are de-rated to 80% for continuous duty. For example,
a traditional 30 A maximum rating is now interpreted
and labeled as a 24 A continuous duty rating. Optima
current ratings are shown with continuous/maximum
rating values.
Surge Suppression (standard)
• All models include a thermally protected varistor on
each phase with a single-pulse energy rating of 120
joules.
• All models have a peak surge current rating of
10,000 A for a single pulse 8x20µs wave.
Environment
• Operating Temperature: 32°F to 122°F
• Maximum Altitude: 6,562 feet
• Relative Humidity: 5% to 85% non-condensing
EMI Filter (standard)
• All models have < 1.0 mA leakage.
Frequency (MHz) 0.15 0.5 1 10 30
Common Mode (dB) 55 62 65 50 45
Differential Mode (dB) 36 55 60 60 50
Typical Insertion Loss (closed 50 Ohm system)

Optima™533 Series Power Distribution Units
Operating Guide P/N 501035-000 Rev B
© 2021, Marway Power Systems, Inc. All rights reserved.
Optima™, Optima RCM™, Commander™, TwinPower™, mPower™, and mPower DC™ are trademarks of Marway Power
Systems, Inc. All other trademarks are the property of their respective owners.
Global Support Contacts
Web: www.marway.com
Email: [e-mail]
[e-mail]
Phone: [phone] (7am–5pm PST)
ere may be updates to this documentation at:
http://www.marway.com/docs
Marway Power Solutions
1721 S. Grand Ave., Santa Ana, CA 92705
800-462-7929 •[e-mail]