EZ-ZONE® Expansion Module (RME)

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