Innotech Micro2000 M2K04

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Application

The Innotech Micro2000 Series Controllers are designed to be used

in commercial applications to provide complete control for air

conditioning systems. Specifically for applications where a condenser

water pump interlock system is required.

Features

• Condenser Water Pump Interlock Control

• LED Display of Temperature and Program functions

• Control Station fits standard electrical wall plates

• Four core screened cable simplifies connection between the control

station and controller

• Adjustable Proportional Band, Dead Zone, Compressor Restart Time,

Aer hours Timer and Setpoint Range

• Able to operate as 2 cool, 2 electric heating or as reverse cycle heating

or cooling

• Aer Hours function

• 365 Day Battery Backed Real Time Clock

• Programmable Schedules, 4 events per day

• Programmable Holidays, 20 On / O dates

• Storage of Accumulated Aer Hours Run Time

• All adjustments from the control station

Specifications

Power Supply

• Voltage: 240VAC ±10% @ 50/60Hz

• Power Consumption: 7VA max

Inputs

• 10kΩ thermistor temperature sensor

• Digital Input for Switched contact

Outputs

Relay # 1: Voltage free relay contacts:

Normally Open 240VAC, 16A resistive

240VAC, 6A inductive

Relay # 2, 3: Voltage free relay contacts:

Normally Open 240VAC, 10A resistive

240VAC, 6A inductive

Relay # 4, 5: Voltage free relay contacts:

Normally Open 240VAC, 2A resistive

240VAC, 0.5A inductive

Connection Between Controller and Control Station

• 4 way connection via 3 core plus screen cable

Control Station Terminal Identification

• IN 1 Temperature Sensor Input

• IN 2 Digital Input for Switched Contact

• IN 3 Verify Signal Feedback Input

• +12V Power from Controller

• Comms Comms to Controller

• GND Ground from Controller

Controller Terminal Identification

240 Volt Power connection to Control Unit:

• Earth

• N Neutral supply

• 240V~ Mains 240VAC Supply

Output Relays

• NO Normally open contact

• COM Common contact

Comms Terminals

• +12V Power to Control Station

• Comms Comms from Control Station

• GND Ground to Control Station

Battery

Contains a lithium type battery, dispose of properly.

(In accordance with local regulations)

• Type CR-2032 Lithium Battery

• Nominal voltage 3 Volts

• Shelf life 5 years, dependent on ambient temperature

Caution: Risk of Explosion if battery is replaced by an incorrect type.

Temperature Ratings

• Storage: 0 to 50°C non-condensing

• Operating: 0 to 40°C non-condensing

• Sensor Input: 5 to 35°C

Models:

M2K04: 1 Speed FAN, 2 COOL and 2 HEAT Controller, 365 Day

Battery Backed Time Clock, with Condenser Water Pump

Interlock

DS 9.04

October 2013

M2K04

Micro2000 Controller

NO Com

FANS

NO Com

Heat 1

NO Com

Heat 2

NO Com

Cool 2

NO Com

Cool 1

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Summary

Micro2000 Controller Specifications

Power Supply Details

Details of voltage and power consumption requirements for the controller.

Input Signal Specifications

Specifies the types of inputs supported, including thermistor and digital inputs.

Output Relay Configurations

Lists the voltage-free relay contacts for various output functions.

Control Station Connection

Explains the 4-way connection method between the controller and control station.

Terminal Identification

Identifies terminals on control station and controller for power, communication, and signals.

Battery Information

Information on the type, voltage, and disposal of the controller's lithium battery.

Temperature Operating Ranges

Specifies storage, operating, and sensor input temperature ranges.

Application Overview

Describes the primary use of Micro2000 Series Controllers in commercial HVAC systems.

Key Features

Highlights key functionalities like pump interlock, LED display, and programmable schedules.

Installation and Operation

Approvals Conformance

Lists the electromagnetic emission and immunity standards the controller conforms to.

Installation Guidelines

Provides guidelines for mounting, wiring, and connecting the Micro2000 controller.

Fault and Error Indicators

Explains common fault messages like 'HELP', 'SEN FAIL', and 'no FLO'.

Pump Interlock System

Details the 3-wire pump interlock system and its interaction with the M2KPI module.

Input Terminal Functions

Details Input 1 (temperature sensor) and Input 2 (selectable digital input functions).

Fault and Mode Conditions

Explains specific operational states like AC Fault, External Disable, and Door Switch modes.

Output Relay Assignments

Maps controller relays to specific functions like Fans, Heat 1, Heat 2, Cool 2, and Cool 1.

Control Push Button Functions

Describes the function of the Auto and A/H buttons for schedule control and after hours operation.

Advanced Functions and Programming

After Hours Run Time Management

Instructions for viewing and resetting the accumulated After Hours Run Time.

Startup Default Settings

How to set and save the controller's default operating modes.

Schedule and Holiday Programming

Guidance on setting up daily on/off schedules and overriding them with holiday schedules.

Controller Programming Mode

Process for entering programming mode, selecting, and adjusting parameters from 00 to 17.

Programming Best Practices

Key information on saving alterations, timeouts, and reverting to last saved settings.

Parameter Reference

Parameter 0-8: Core Settings

Covers sensor calibration, setpoints, dead band, proportional band, after hours, and compressor timing.

Parameter 9-17: Operational Modes

Details operating modes (EDH/REV), heating/cooling control, fan cycles, display options, and input functions.

Safety Precautions

General Electrical Safety

Advises against touching terminals with power, disassembling the unit, and stresses the need for external safety measures.

Wiring Diagrams

Electric Heat Connection

Illustrates the wiring for the Electric Heat connection, including controller and supply connections.

Reverse Cycle Connection

Illustrates the wiring for the Reverse Cycle connection, including compressor and reversing valve.

The Innotech Micro2000 Series Controllers (M2K04) are designed for commercial air conditioning systems, particularly those requiring a condenser water pump interlock system. These controllers provide comprehensive control over various aspects of an HVAC system, including fan, cooling, and heating operations, with advanced scheduling and monitoring capabilities.

Function Description

The M2K04 controller is a 1-speed FAN, 2 COOL, and 2 HEAT controller, featuring a 365-day battery-backed real-time clock. It integrates a condenser water pump interlock system, ensuring proper pump operation in conjunction with the compressor. The controller manages temperature based on a 10kΩ thermistor input and allows for digital input from switched contacts. It can operate in either 2 cool, 2 electric heating, or reverse cycle heating/cooling modes. The device supports programmable schedules with four events per day and programmable holidays (20 On/Off dates). An "After Hours" function is included, with the ability to store accumulated After Hours Run Time.

Important Technical Specifications

Power Supply:

Voltage: 240VAC ±10% @ 50/60Hz
Power Consumption: 7VA max

Inputs:

Temperature Sensor: 10kΩ thermistor
Digital Input: Switched contact

Outputs (Voltage-free relay contacts):

Relay #1 (Fan): Normally Open 240VAC, 16A resistive; 240VAC, 6A inductive
Relay #2, #3 (Heat 1, Heat 2 / Reversing Valve): Normally Open 240VAC, 10A resistive; 240VAC, 6A inductive
Relay #4, #5 (Cool 1, Cool 2): Normally Open 240VAC, 2A resistive; 240VAC, 0.5A inductive

Battery:

Type: CR-2032 Lithium Battery
Nominal Voltage: 3 Volts
Shelf Life: 5 years (dependent on ambient temperature)

Temperature Ratings:

Storage: 0 to 50°C non-condensing
Operating: 0 to 40°C non-condensing
Sensor Input: 5 to 35°C

Physical Dimensions:

Controller: Approximately 107mm (width) x 89mm (height) x 65mm (depth)
Control Station: Approximately 65mm (width) x 107mm (height) x 36mm (depth)

Approvals:

Conforms to Electromagnetic emission and immunity requirements according to standards EN55011 (CISPR11) and EN50082 for CE Marking and C-Tick Labelling.

Usage Features

Control Station: The control station features an LED display for temperature and program functions, fitting standard electrical wall plates. It connects to the controller via a 4-way, 3-core plus screen cable, simplifying installation.

Push Buttons:

Auto Button: Enables/disables programmed schedules.
After Hours (A/H) Button:
- Normal After Hours: Instructs the controller to run for a set time (Parameter 5).
- Adjustable After Hours Run Time: If Parameter 6 is "On," allows users to adjust the run time using up/down buttons.
- Manual Override: If Parameter 5 is "On," can change the controller's current state, overriding schedules (e.g., force Off until next scheduled On time).
Time Button: Used to display current time/date, enter programming modes, select parameters, and confirm changes.
Up/Down Buttons: Used to adjust setpoints, times, dates, and parameter values.

Programming Modes:

Schedules/Clock Programming: Accessed by holding the Time button for 5 seconds. Allows setting weekly schedules (up to 20 On/Off events per day) and holiday schedules (up to 20 On/Off dates).
Controller Parameter Programming: Accessed by holding the Time and Up arrow buttons for 5 seconds. Allows adjustment of 18 parameters (P00 to P17) covering:
- P00: Sensor Calibration: Offset sensor temperature (±10°C).
- P01: Minimum Setpoint: 5 to 35°C.
- P02: Maximum Setpoint: 5 to 35°C.
- P03: Dead Band: 0 to 10.0°C.
- P04: Proportional Band: 0 to 10.0°C.
- P05: After Hours Timer: 1 to 24 hours.
- P06: After Hours Adjustable: On/Off (determines if P05 is adjustable).
- P07: Fan Run On Time: 0 to 500 seconds (removes residual heat).
- P08: Compressor Minimum Off Time: 0 to 99 minutes.
- P09: EDH / REV: Electric Heat mode (independent heat/cool) or Reverse Cycle mode (cool relay controls compressor, heat relay controls reversing valve).
- P10: HEA / COOL: Determines if reversing valve is energized for cooling or heating (effective only if P09 is REV).
- P11: Fan Cycle: Continuous fan or fan cycles with heating.
- P12: Setpoint Display Only: Displays setpoint or current temperature.
- P13: Daylight Savings Enable: On/Off.
- P14: Input 2 Function: Configures Input 2 as Door input, AC Fault input, External Disable input, or External After Hours input.
- P15: Door Open Time: 0 to 500 seconds (period door must be open before registered).
- P16: Door Reset Dead Band: Off to 10.0°C (increases dead band in standby mode).
- P17: CW Pump Run On Time: 0 to 500 seconds (condenser water pump run-on time).

Fault Representation:

"HELP": Communications error between Controller and Control Station. Controller shuts down after 1 minute.
"SEN FAIL": Open circuit room Temperature Detector.
"no FLO": No Flow Verify Signal feedback from Pump Interlock Module within 30 seconds of a Call signal.
"AC FAIL": If P14 is "AC" and Input 2 is "ON," controller displays "AC FAIL" but continues operation.
"OFF": If P14 is "dIS" and Input 2 is "ON," controller shuts down all outputs and displays "OFF."
"Door": If P14 is "Door" and Input 3 is "ON" for the time set in P15, controller displays "Door" and enters Standby Mode, increasing dead band by P16.

Condenser Water Pump Interlock Control: The M2K04 is equipped with a 3-wire pump interlock system. When Compressor One is called, the controller sends a "Call" signal to the Pump Interlock Module. The module enables the pump and sends a "Verify" signal when flow is achieved, allowing the controller to enable Compressor One. When Compressor One turns off, the "Call" signal remains on for the time set in Parameter 17 (CW Run On Time) to allow the pump to run on. Multiple M2K04 controllers can be connected in parallel to a single Pump Interlock Module.

Maintenance Features

Battery Replacement: The device contains a CR-2032 lithium battery. Users are cautioned about the risk of explosion if the battery is replaced with an incorrect type. Proper disposal in accordance with local regulations is required.

Installation Guidelines:

Mount on DIN rail in approved cabinets, in a dry, clean location free of excess vibration.
Maximum terminal cable entry is 1.5mm² wire.
Wiring must comply with INNOTECH connection diagrams and local bylaws.
Connect 240V AC supply to correct terminals, observing polarity.
Maximum wire length between control station and controller should not exceed 50 meters.
Wiring should not run in parallel with high-current conductors.
Only qualified personnel should install this product.

Safety Precautions:

Never touch I/O terminals while power is supplied.
Never attempt to disassemble the unit while power is supplied.
Emergency stop circuits, limit circuits, interlock circuits, and similar safety measures must be provided.
External safety measures must be provided to account for potential issues like output relays remaining On or Off due to burning or deposition.
Follow Innotech wiring diagrams and installation instructions.

Programming Notes:

Unsaved alterations (not holding Time button for 5 seconds) will revert to the last saved settings.
If no buttons are pressed for 30 seconds while adjusting a parameter, the controller reverts to the parameter selection screen.
If the parameter selection screen is left unaltered for 60 seconds, the controller reverts to the last saved setting and exits programming mode.