Watlow EZ-ZONE RMA PLUS Specifications

RMA PLUS Remote Access Module

Watlow’s New
RMA PLUS Remote
Access Module Offers
Plug and Play Access to
Powerful EZ-ZONE® RM
Family

SPECIFICATION SHEET

Watlow’s new RMA PLUS remote access module supports
Watlow’s powerful EZ-ZONE® RM temperature controller
family by communicating with and providing access to all
EZ-ZONE RM modules in a system.

EZ-ZONE RMA users have had to spend more time than
desired to connect their entire system. Now the RMA PLUS
offers standard state-of-the-art connectivity from the device
to the entire system. Real-time communication is possible via
a built-in Ethernet switch or USB. Users can also connect to
third-party and legacy devices because the RMA PLUS acts as
a gateway between Modbus® TCP and Modbus® RTU.

The device comes standard with a built-in managed Ethernet
switch with two Ethernet jacks. Up to three Modbus® TCP
sessions, three Watbus over Ethernet sessions and one
Watbus over USB session is available in a single device.
Users can also log up to 16 gigabytes of data standard or
upgrade to a maximum of 32 gigabytes. Configuration and
data logs are available as Windows® files so they can be easily
accessed. In addition, discovery and transfer speeds have
gone from minutes with the legacy EZ-ZONE RMA to just
seconds with the RMA PLUS.

Because the RMA PLUS is an essential component of the
EZ-ZONE RM family, users receive all the benefits and support
of working with Watlow®.

Features and Benefits

Plug and play access to EZ-ZONE RM family

• Integrates easily into existing systems

Built-in Ethernet switch

• Eliminates the need to provide a switch for small systems

• Offers port mirroring for troubleshooting

• Protects from broadcast and multicast storms

Integrated USB connection

• Provides easy connection from PC with no converter

• Ensures real-time communication from software packages

Modbus® TCP and Modbus® RTU

• Allows users to build tables based on individual needs

• Connects to third-party and legacy devices

Data logging

• Offers users the opportunity to log any data point in the

system

Specifications

(Select a RMA PLUS module for communication protocol
options, data logging and system conguration)
Interoperable with:

• EZ-ZONE RM (C, E, H, L, S) version 9.0+ (high-speed Watbus)

• EZ-ZONE RM (A, C, E, H, L, S) (low-speed Watbus)

• EZ-ZONE PM, RUI, ST (low-speed Watbus)

• EZ-ZONE RM (F, G, UH, Z)

• POWERGLIDE™

Line Voltage/Power

• Power consumption: 4 W, 9VA

• Any external power supply used should comply with a
Class 2 or SELV rating

Isolated Serial Communications

• All modules ship with standard bus protocol (Watbus)
for conguration and communication connection to all
EZ-ZONE products

Standard Communication

• Watbus over Ethernet (gateway to high-speed Watbus)

• Watbus over USB (gateway to high-speed Watbus)

• Watbus via Serial (‘C’ connector)

• Modbus® TCP

Additional Communication Options

• EIA 232/485, Modbus® RTU

• DeviceNet™ (future option)

• EtherNet/IP™ (future option)

USB

• USB 2.0 device

• Mini USB connector type

• Recognized as a composite device: vendor specic and mass
storage classes

• USB host (future option)

Real Time Clock with Battery Backup

• Accuracy (typical): +/- 30ppm at 77°F (25°C)

• +30/-100ppm overtemperature operating range

• Battery type and typical lifetime rating: 10 years at
77°F (25°C)

• Lithium battery used, recycle properly

Data Logging

• Maximum of 2000 valid records

• Maximum of 500 unique data points per Watbus bus
and zone

• File storage on embedded micro SD memory

• Comma separated value (CSV) le type

• Access log les via USB device port

Memory Card

• Micro SDHC (4-32GB)

• 4GB class 4 SDHC on standard models (operating
temperature: -25 to 85°C)

• 16GB class 10 SDHC on data log models (operating
temperature: -40 to 85°C)

• -4 to 185°F (-20 to 85°C) ambient rating, non-volatile
memory

Note: All module parameters are backed up in memory.

Configuration Code

Module for communications, data logging and storage. Comes standard with Modbus® TCP, standard bus over Ethernet, USB device,
internal storage and SD card.

① ② ③ ④

Rail Mount

Access Module

RMAP

⑤

A =

None

2 =

Modbus® RTU 232/485

5 =

DeviceNet™ (future option)

⑥

A =

None

1 =

18 T/C scanner inputs (future option)

2 =

18 T/C limit inputs with one global relay output (future option)

⑦

A =

None

D =

Data logging to 16G SD card

⑧

A =

None

B =

Bluetooth® (future option)

W =

Wi-Fi (future option)

–

Additional Communication Protocols

Ultra High Density T/C Input Card

⑤

Additional

Communication

Protocols

Data Logging

Wireless Connectivity

⑥

Ultra High Density

Thermocouple

Input Card

⑦

Data

Logging

⑧

Wireless

Connectivity

⑨

A =

⑩

A =

⑪ ⑫

AA =

XX =

Watlow® and EZ-ZONE® are registered trademarks of Watlow Electric
Manufacturing Company.
Modbus® is a registered trademark of Schneider Automation Incorporated.
Windows® is a registered trademark of the Microsoft Corporation.
Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc.
POWERGLIDE™ is a trademark of Watlow Electric Manufacturing Company.
DeviceNet™ and EtherNet/IP™ are trademarks of Open DeviceNet Vendors Association.

⑨

Future

Option

A

–

Future option

Future option

Standard
Custom/locked code application specic

⑩

Future

Option

A

⑪ ⑫

Additional

Options

Future Option

Future Option

Additional Options

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