Home › Watlow › EZ-ZONE® › RM Modules › EZ-ZONE® High-Density Control Module (RMH)

EZ-ZONE® High-Density Control Module (RMH)

Posted on Posted in RM Modules Tagged with , ,
EZ-ZONE® High-Density Control Module (RMH)


High-Density Control Module Specifications (RMH)

(Select an RMH module for 4 to 16 loops of control.)

Requires 24 to 28VAC/VDC power supply, includes communication port for configuration with EZ-ZONE configurator and PC.

    Line Voltage/Power

  • Power consumption: 7 W, 14VA
  • Any external power supply used should comply with a Class 2 or SELV rating Controller
  • User-selectable heat/cool, on-off, P, PI, PD, PID or alarm action, not valid for limit controllers

    • Process PID Options

  • Auto-tune with TRU-TUNE+ adaptive control
  • Control sampling rates: input = 10Hz, output = 10Hz (non-divisional)

    • Isolated Serial Communications

  • All modules ship with standard bus protocol for configuration and communication with all other EZ-ZONE controllers
  • Optional EIA 485, Modbus® RTU

    • Calibration Accuracy

  • ±0.1% of span, ±1°C. See user manual for details.

    • Universal Input

  • Thermocouple, grounded or ungrounded sensors
  • >20MΩ input impedance
  • Max. of 2kΩ source resistance
  • RTD 2-wire, platinum, 100Ω and 1000Ω @ 32°F (0°C) calibration to DIN curve (0.00385Ω/Ω/°C)
  • Process, 0-20mA @100Ω, or 0-10VDC @ 20kΩ input impedance; scalable, 0-50mV

    • Thermistor Input

  • 0 to 40kΩ, 0 to 20kΩ, 0 to 10kΩ, 0 to 5kΩ
  • 2.252kΩ and 10kΩ base at 77°F (25°C)

Digital Input

  • Update rate 10Hz
  • Max. input 36VDC at 3mA
  • Min. high state 3VDC at 0.25mA

    • Dry Contact Input

  • Update rate 10Hz
  • Min. open resistance 10kΩ, max. closed resistance 50Ω

    • Output Hardware

  • 6 digital inputs/outputs:
  • Switched dc, max. 20VDC @ 40mA, 12VDC @ 80mA
  • Open collector, max. 32VDC @ 1.5A, max. 8A per 6 outputs combined
  • Electromechanical relay, Form A, 5A, 24 to 240VAC or 30VDC max., resistive load, 100,000 cycles at rated load, requires a min. load of 20mA at 24V, 125VA pilot duty

    • Tri-Process (Three universal process/retransmit outputs)

  • Output range selections: 0 to 10VDC into a min. 4KΩ load
  • 0 to 20mA into max. 400Ω load

    • Quad SSR

  • Four SSRs at 2A each. SSRs are grouped in 2-pairs with each sharing a common. See table.

    • Maximum Current Per Relay

    Ambient Temp.1 Quad SSR CardMore than 1 Quad SSR Card
    -18 to 20°C2A1.5A
    20 to 65°C1A0.75A

    (4)Connector Style
    A=Right angle screw connector (standard)
    F=Front screw connector
    S=Custom

     

    (5)Slot A
    1=4 universal inputs (T/C, RTD 2-wire, 0-10VDC, 0-20mA) with control loops
    2=4 thermistor inputs with control loops

     

    (6)Slot B
    A=None
    1=4 universal inputs (T/C, RTD 2-wire, 0-10VDC, 0-20mA) with control loops
    2=4 thermistor inputs with control loops

     

    (7)Slot D
    A=None
    1=4 universal inputs (T/C, RTD 2-wire, 0-10VDC, 0-20mA) with control loops
    2=4 thermistor inputs with control loops
    C=6 digital I/O
    F=3 universal process/retransmit outputs
    J=4 mechanical relay 5A, Form A
    L=4 SSR’s at 2A each. SSR’s grouped in 2-pairs with each pair sharing a common.

     

    (7)Slot E
    A=None
    1=4 universal inputs (T/C, RTD 2-wire, 0-10VDC, 0-20mA) with control loops
    2=4 thermistor inputs with control loops
    C=6 digital I/O
    F=3 universal process/retransmit outputs
    J=4 mechanical relay 5A, Form A
    L=4 SSR’s at 2A each. SSR’s grouped in 2-pairs with each pair sharing a common

     

    (10)Enhanced Options
    A=Standard Bus
    1=Standard Bus and Modbus® RTU 485 (user-selectable)

     

    (11)(12)Additional Options
    AA=Standard
    AB=Replacement connectors hardware only for the entered model number
    XX=Custom