CIAT Connect 2 - User Manual

1
Microchip and LCD display
electronic regulation and
signaling electronic module
for liquid coolers
and heat pumps
NA 09.13 H
09 - 2011
Installation
Operation
Commissioning
Maintenance

Summary

Important Recommendations

Electrical power supply

Rules for connecting electrical power supply to the machine.

Specifications of the CONNECT 2 board

Connection of communication buses and of the remote console

Access Levels

Selecting an authorised access level

How to choose the desired access level (User, Technician, CIAT).

Accessing the various access levels

Procedures for logging into different access levels using codes.

List of Parameters

Configuration of the Machine

Customer Configuration

Setpoint Management

Parameters for managing cooling and heating setpoints and their adjustments.

Defrosting

Fan Management

High Pressure Control

INPUTS

OUTPUTS

Contents of the Menus

SETPOINTS menu

Accessing and modifying control setpoints based on operating mode.

MACHINE STATUS menu

Main table

Displays general machine status, operating modes, and faults.

MACHINE STATUS table

Table listing machine status messages and their priority.

Table of “MACHINE STATUS circuit x fault” messages

Table listing circuit-specific fault messages and their priority.

MACHINE PARAMETERS menu

CONTROLS

Main control in cooling and heating modes

Principle of operation for cooling and heating modes, including stage control.

Water temperature setpoint adjustment

Adjusting water temperature setpoints based on control mode.

Adjustment of water temperature setpoint if P7 ≠ INVERTER

Adjusting setpoints for non-inverter compressors using stage differentials.

Water supply control (P141 = 2)

Adjusting the setpoint to the water supply with compensation on the water return (P141 = 3)

Adjustment of setpoint for the water supply and return temperatures (P141 = 1 or 2) if P7 = INVERTER

Adjusting setpoints for inverter compressors based on supply/return temps.

Control setpoint (P251) management

Management of control setpoints based on winter protection and console/input selection.

Automated self-regulating control

Automatic adjustment of control parameters for optimal performance.

CONTROL OF CONDENSING PRESSURE FOR AIR-COOLED UNITS

Control during normal operation or on;off control

Condensing pressure control during normal or on/off operation.

Fan speed control

Variable speed drive (VSD)

Fan speed control with split coils (P11 = split)

a) P21 = 2 with acoustic optimisation

b) P21 = 3 with energy optimisation (Available only if P42 = ALCO or CIAT)

Fan speed control with mixed coils (P11 = mixed)

Fan speed control if P7 = INVERTER

Fan speed control specific to inverter compressors.

Forced control of variable-speed fans

Management of the air blades if P10 = Centrifugal

MANAGEMENT OF THE AUXILIARY HEATER BOARD AND THE ELECTRIC AUXILIARY HEATERS

Management of the electrical auxiliary heaters under normal operation

Operation of electric auxiliary heaters under normal conditions based on temperature.

Management of the electric auxiliary heaters when the machine is shut off by a general fault

Electric heater management during general faults.

MANAGEMENT OF THE BACK-UP BOILER

Management under normal operation

Boiler operation under normal conditions based on air temperature.

Management of the electric auxiliary heaters when the thermodynamic control stage is shut off by a setpoint corrected by the discharge protection

Boiler management when thermodynamic stage is shut off due to discharge protection.

Management of the boiler when the machine has been shut off by a general fault

Boiler management during general faults.

Management of the boiler when the machine has been shut off by a water flow fault

Boiler management during water flow faults.

MASTER;SLAVEE CONTROL

Case of two parallel-connected machines

Setup and configuration for two parallel-connected machines.

Cascade control

Control in parallel with shifted setpoint

Machine status menu

ACTUATION OF THE ELECTRONIC EXPANSION VALVEE

With Alco driver and display

With CIAT driver

COMMUNICATION PROTOCOL

Communication medium

Registers accessible by customer

CIAT Connect 2 Specifications