Watlow EZ-ZONE RM Limit Module Rev C - Manual (Page 7)

Watlow EZ-ZONE ® RML Module • 4 • Chapter 1 Overview
Introduction
The EZ-ZONE ® Rail Mount Limit Module (RML)
is used in thermal applications to limit inadvertent
over-temperature conditions. The RML controller
provides multi-loop (12 loops maximum) safety assur-
ance against instances where over or under tempera-
ture runaway conditions could occur from a shorted
input sensor or an output device that could fail in a
closed position. The RML is recommended for any
application where thermal runaway could result
in large product scrap costs, affect operator safety,
cause damage to equipment, or create a fire hazard.
It just got a whole lot easier to solve the thermal
requirements of your system. The EZ-ZONE RML
module is provided in a space-saving, rail-mount
package and is highly scalable where you only pay
for what you need. Ordering options allow for 1 to
12 loops and for those applications that require the
ability to configure/monitor over a network the Mod-
bus RTU communication protocol is an option. Other
communications protocols are also available (e.g.,
EtherNet/IP, DeviceNet, Modbus TCP and Profibus
DP) when used in conjunction with a Rail Mount Ac-
cess (RMA) module or when using a Remote User In-
terface/ Gateway (RUI/GTW).
Standard Features and Benefits
EZ-ZONE configuration communications and
software
• Saves time and improves the reliability of control
ler set up
FM Approved Over-under Limit with Auxiliary
Outputs
• Increases user and equipment safety for over-
under temperature conditions
Parameter Save & Restore Memory
• Reduces service calls and down time
Agency approvals: UL Listed, CSA, CE, RoHS,
W.E.E.E. FM
• Assures prompt product acceptance
• Reduces end product documentation costs
• FM approval on Limit Models
• Semi F47-0200
Three-year warranty
• Demonstrates Watlow’s reliability and product
support
Touch-safe Package
• IP2X increased safety for installers and operators
Removable cage clamp wiring connectors
• Reliable wiring, reduced service calls
• Simplified installation
Programmable Menu System
• Reduces set up time and increases operator effi-
ciency
Full-featured Alarms
• Improves operator recognition of system faults
• Control of auxiliary devices