EZ-ZONE® Expansion Module (RME)

EZ-ZONE® Expansion Module (RME)


Expansion Module Specifications (RME)

(Select an RME module for additional inputs and outputs and higher amperage outputs.)

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

 


Specifications

Line Voltage/Power

      • Power consumption: 7 W, 14VA
      • Any external power supply used should comply with a Class 2 or SELV rating

Serial Communications

      • All modules ship with standard bus protocol for configuration and communication with all other EZ-ZONE products

Wiring Termination—Touch Safe Terminals

      • Right angle and front-screw type terminal blocks (slots A, B, D, E)
      • Input, power and controller output terminals, touch safe, removable, 12 to 30 AWG
      • Ring lug terminal blocks (slots A and D only)
      • Input, power and controller output terminals are touch safe and removable

Digital Input

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

Dry Contact

      • Min. open resistance 100kΩ
      • Max. closed resistance 50Ω

Output Hardware (6 digital inputs/outputs)

      • Update rate 10Hz
      • Switched dc
      • Output voltage 20VDC max.
      • Max. supply current source 40mA at 20VDC and 80mA at 12VDC
      • Open collector
      • Switched voltage max. 32VDC
      • Max. switched current per output 2.5A
      • Max. switched current for all six outputs combined 10A

Dual Solid State Relay

      • Two SSR board option, Form A, 10A max. each SSRs combined @ 24VAC min., 264VAC max., opto-isolated, without contact suppression, max. resistive load 10A per output at 240VAC, max. 20A per card at 122°F (50°C), max. 12A per card at 149°F (65°C)

Four Mechanical Relay

      • Four electro mechanical relays, 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.

Programmable Application Blocks

Compare

  • Greater than, less than, equal, not equal, greater than or equal, less than or equal

Counters

  • Counts up or down, loads predetermined value on the load signal. Output is active when the count value equals or exceeds predetermined target value

Linearization

  • Interpolated or stepped relationship

Logic

  • And, nand, or, nor, equal, not equal, latch, flip flop

Math

  • Average, process scale, deviation scale, differential (subtraction), ratio (divide), add, multiply, absolute difference, min., max., square root, sample and hold, altitude and dew point

Process Value

  • Sensor backup, average, crossover, wet/dry bulb, switch over, differential (subtraction), ratio (divide), add, multiply, absolute difference, min., max., square root, altitude, visala and dew point

Special Output Function

  • Compressor – turns on-off compressor for one or two loops (cool and dehumidify with single compressor)
  • Motorized valve – turns on-off motor open/closed outputs causing valve to represent desired power level
  • Sequencer – turns on-off up to four outputs to distribute a single power across all outputs with linear and progressive load wearing

Timers

  • On pulse – produces an output of fixed time on the active edge of timer run signal
  • Delay – output is a delayed start of timer run and off at same time
  • One shot – oven timer
  • Retentive – measures timer run signal and output on when accumulated time exceeds target

Variable

  • User value for digital or analog variable

Watlow® EZ-ZONE® RME diagram
Watlow® EZ-ZONE® RME diagram

(4) Connector Style
A = Right angle screw connector (standard)
F = Front screw connector (slots A, B, D and E only)
R = Ring lug connector (if ordered, then slots B and E must be = A)
S = Custom

 

 

(5) Slot A
A = None
C = 6 digital I/O
F = 3 universal process/retransmit outputs
J = 4 mechanical relay 5A, Form A
K = 2 SSRs, Form A, 10A max. each (if ordered, then slots B must be = A).
L = 4 SSR’s at 2A each. SSR’s grouped in 2-pairs with each pair sharing a common.

 

 

(5) Slot B
A = None
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.

 

(5) Slot D
A = None
C = 6 digital I/O
F = 3 universal process/retransmit outputs
J = 4 mechanical relay 5A, Form A
K = 2 SSRs, Form A, 10A max. each (if ordered, then slot E must be = A).
L = 4 SSR’s at 2A each. SSR’s grouped in 2-pairs with each pair sharing a common.
T = Quad inputs for external current transformers. Can do either single-phase or three-phase system measurement for all hardware outputs ordered within the expansion module.

 

 

(5) Slot E
A = None
C = 6 digital I/O
F = 3 universal process/retransmit outputs
L = 4 SSR’s at 2A each. SSR’s grouped in 2-pairs with each pair sharing a common.
T = Quad inputs for external current transformers. Can do either single-phase or three-phase system measurement for all hardware outputs ordered within the expansion module.

 

 

Firmware, Overlays, Parameter Settings

(11)(12) Additional Options
AA = Standard
AB = Replacement connectors hardware only, for the entered part number. Additional cost for the model can be disregarded as you are only ordering replacement connectors.
12 = Class 1, Div. 2 (not available with integrated limit controller or mechanical relay options).
XX = Custom

User Interfaces

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