Watlow EZ-ZONE RMH - Manual (Page 13)

Watlow EZ-ZONE ® RMH Module • 10 • Chapter 1 Overview
EZ-ZONE RMH Module - System Diagram
16 Control Loops - Slots A, B, D and E
R M H x - [1,2] [1,2] [1,2] [1,2] - A A A A
Push to select Zone
Address and Protocol
None, Thermocouple, 2-Wire RTD (100, 1k),
Thermistor (5k, 10K, 20k, 40k), Process
(V, mV, mA) or 1K Potentiometer
Analog Input 1 through 16 PID
Controller
Output
Function
Input
Function
Zone and Status
LED
Zone Selection
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
RUI,
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 or Vdc Indicates communications
activity (Modbus or Stand-
ard Bus)
Slot A, B, D, E
Input Sensor