Daikin EWWQ-AJYNN Service Manual page 19

The Digital Controller
1.4.2 Main Board
1
Introduction
Main Board
2
3
4
5
2–8
The control board contains the hardware and the software necessary to monitor and to control the unit.
The figure below shows the main board:
1 Power supply G (+), G0 (-)
2 Status LED
3 Fuse 250Vac
4 Universal analog inputs (NTC, 0/1V, 0/10V,0/20mA, 4/20mA)
5 Passive analog inputs (NTC, PT1000, On- off)
6 Analog outputs 0/10V
7 24Vac/Vdc Digital inputs
8 230Vac or 24Vac/Vdc Digital inputs
9 Synoptic terminal connection
10 Standard terminal (and program download) connector
11 Digital outputs (relays)
12 Expansion board connection
13 pLAN connection and microswitches
14 Serial card connection
15 Printer card connection
16 Memory expansion connection
ESIE07-05
Part 2 – Functional Description