Watlow EZ-ZONE RMH - Manual (Page 7)

Watlow EZ-ZONE ® RMH Module • 4 • Chapter 1 Overview
Introduction
The EZ-ZONE ® RM High Density (RMH) control
module provides multi-loop (4 to 16 loops) PID control
in a small footprint. The RMH takes the pain out of
solving your thermal loop requirements as a stand-
alone module or in applications that require distrib-
uted control.
It just got a whole lot easier to solve the thermal
requirements of your system. The RMH module is
provided in a space-saving, rail-mount package and
is highly scalable where you only pay for what you
need. For those applications that require the abil-
ity to configure/monitor the control over a network,
Modbus RTU communications is an option. Other
communications protocols are also available (e.g.,
EtherNet/IP, DeviceNet, Modbus TCP and Profibus
DP) when used in conjunction with an RMA module
or when using a Remote User Interface/ Gateway
(RUI/GTW).
Standard Features and Benefits
PID controller
• Provides two mounting options (DIN rail, chassis
mount)
• Reduces wiring time and termination complexity
compared to connecting discrete products
• Reduces panel space and installation cost
Communication Capabilities
• Supports network connectivity to a PC or PLC
• Watlow Standard Bus or Modbus
® RTU
• Provides plug and play capabilities with basic Re-
mote User Interface (RUI’s)
• SpecView for Watlow used over standard bus com-
munications
• Free standard bus communications port and free
PC software (EZ-ZONE Configurator)
Additional Control Integration Options
• Includes programmable timer functions
• Includes programmable counter functions
• Allows for simple math and logic programming op-
tions
Advanced PID Control Algorithm
• Offers TRU-TUNE
® + adaptive control to provide
tighter control for demanding applications
• Provides auto-tune for fast, efficient startup
Integrated Thermal Loop Diagnostics
• Users can easily tell that the entire thermal sys-
tem is functioning properly
• Provides complete system diagnostics that are far
superior to simple discrete level diagnostics
• Allows for flexible synergistic use of hardware,
such as using one loop's sensor as a backup to an-
other loop in the event of sensor failure.
• Helps prevent load loss or allow for maintenance
to be scheduled when more convenient.
• Provides notification of system problems to help
reduce maintenance and service costs
Off-the-Shelf Designed System Solution
• Improves system reliability with a factory inte-
grated solution that minimizes inter-module con-
nections and potential problems at screw termina-
tion points.
• Reduces installation cost
• Eliminates compatibility headaches often encoun-
tered with using many different components and
brands
Controller Handles High Ambient Tempera-
tures
• Operates in an unprecedented temperature range
of -18 to 65°C (0 to 149°F) for cabinets and panel
enclosures with elevated temperature levels
Memory for Saving and Restoring User-De-
fined Parameter Default Settings
• Allows customers to save and restore their own
defined defaults for machine parameter settings
• Reduces service calls and downtime due to inad-
vertent end user parameter adjustments
Modules Allow for Greater Design Flexibility
• Allows PID loops to be added in increments of
four. Module can scale from 4 to 16 total loops
• Saves money because you do not pay for any more
than you need and don’t settle for any less func-
tionality than you need
Synergistic Module Control
• Allows outputs selected for control (heat/cool),
alarms or events to be located in any physical
module, regardless of which module is connected
to the input sensor
Split-Rail Control
• Allows modules to be mounted together or mount-
ed remotely from one another
• Shares control operation via Synergistic Module