Watlow EZ-ZONE RM Limit Module Rev C - Manual (Page 12)

Watlow EZ-ZONE ® RML Module • 9 • Chapter 1 Overview
Push to select Zone
Address and Protocol
EZ-ZONE RML-Limit Module - System Diagram
None, Thermocouple, 2-Wire RTD (100, 1k),
Thermistor (5k, 10K, 20k, 40k), Process
(V, mV, mA)
Analog Input 1 through 12 Limit
Controller
Output
Function
Input
Function
Output 7, 8, 9 and 10
5A Mechanical Relay Form A
Some input/output combinations not possible, see ordering matrix
Zone and Status
LED
Zone Selection
Output Status
LEDs
2
3
4
5
6
1
10
9
7
8
Button
D E
B
A
S M
EIA - 485 Communications
Standard Bus
(optional Modbus RTU)
Inter-module Bus
Indicates Zone
Address
Card Status
Slots A, B, D, E
Indicates I/O
Status
RUI, EZ-ZONE PM/ST,
PC, PLC or HMI
Other RM Modules
Power Supply
Modbus RTU
Address 1 - 16
Standard Bus
Zone 1 - 16
Supervisory &
Power Board
Slot C
20.4 to 30.8 Vac oe Vdc
Slot E
Indicates communications
activity (Modbus or Stand-
ard Bus)
Process Value
Alarm
Timer
Special Output Function 1-4
Profile Event Output A-H
Math
Heat Power
Off
Analog Input
Cool Power
Compare
Counter
Digital I/O
Module Limit
Function Key
Limit
Linearization
Logic
Slot A, B, D
4-Form A
Mechanical Relay
Outputs
Note:
Output 8 will always be the limit output
regardless of Slot E options. It will be
either the global limit or assigned to a
specific loop.
4-Form A Mechanical Relay Outputs Slot E
12 Limit Loops-Slots A, B, D
Input Sensor