CIAT FLOWAY ACCESS User Manual

2 - THE CONTROL PLC
2.1 - Introduction
The control PLC is used to control and monitor the operating status of the various components of the air handling unit. Depending
on the options, it provides temperature control and fan management. It can be connected to a CMS so that it can be controlled
remotely.
2.2 - Inputs/outputs
The PLC has analogue and on/o󰀨 inputs/outputs. The list of inputs/outputs is described below (according to the options installed).
The PLC is installed in the main electrics box and the expansion modules (if present) are in the additional boxes installed as close
as possible to the elements being controlled.
Input/output designations Type
U On/off or analogue input
GND, C Shared
DI On/off input
Y Analogue output
Out Polarised 24 V on/off output
NO Normally open potential-free on/off output
NC Normally closed potential-free on/off output
Connector Inputs Type Description
J1
G +24 Vac power supply
G0 Shared
J2
U1 0-10V CO
2
air quality measurement or supply air duct pressure sensor
U2 NTC Return air temperature sensor
U3 NTC Supply air temperature sensor
GND Shared
J3
U4 NTC Fresh air temperature sensor
U5 ON/OFF Changeover thermostat
+Vdc Not used
+5VR Not used
GND Shared
J4
U6 ON/OFF Intake lter pressure switch
U7 ON/OFF Exhaust lter pressure switch
+Vdc Not used
+5VR Not used
GND Not used
J5
U8 ON/OFF DX unit defrosting
U9 0 - 5V
Air intake fan differential pressure sensor (controller software version >= V09)
otherwise: not used
U10 0 - 5V
Extraction fan differential pressure sensor (controller software version >= V09)
otherwise: not used
+Vdc Not used
+5VR Not used
GND Shared
EN-5 FLOWAY ACCESS

CIAT FLOWAY ACCESS Specifications

General

Brand	CIAT
Model	FLOWAY ACCESS
Category	Air Handlers
Language	English