ABB Aztec AWT440 Commissioning Instructions page 7

Optional
communications module
(Profibus, MODBUS or
Ethernet)
SK1
SK2
1 2 3 4 5
COMMS
Comms. connections
(Not Ethernet)
Sensor terminal connections
Fig. 2 Connections overview
Relays (1 to 4)
N/O
COM
N/C
Analog outputs (1 to 4)
+
–
Fig. 3 Digital I/O, relays and analog output connections
CI/AWT440–EN Rev. A
SK1
Smart interface
module 1
SK2
(shown fitted)
1 2 3 4 5
COMM S
+ –
OUT 1 OUT 2
Digital I/O Analog output
connections connections 1 and 2
(standard)
Relays (5 and 6)
COM
L
Load
N/C
N
L
Load
Digital input (24 volt)
INT +24 V
750 
DIO 1 to 6
Max.
DIO COM
Auxiliary device
(for example, chart
recorder, PLC)
ANALOGUE OUTPUT BOARD
CM40/0235
SK4
RELAY RELAY
OUT 3 OUT 4
5 6
I/O MODULE 2
+ – + – N L
OUT 1 OUT 2
RELAY 1 RELAY 2 RELAY 3 RELAY 4
ANALOGUE OUTPUT BOARD
CM40/0235
SK4
OUT 3 OUT 4
I/O MODULE 2
+ –
RELAY 1 RELAY 2 RELAY 3
Relay connections
1 to 4 (standard)
Fuse 3.15 A Type T 100 to 240 V, 50/60 Hz
N
Load L
I/O module 3 option card
(shown fitted)
RELAY RELAY
5 6
N L
RELAY 4
Mains supply 100 to 240 V AC
±10 % (90 min. to 264 V max.)
50 / 60 Hz
Digital output
INT +24 V (100 mA max.)
Load
DIO 1 – 6
Digital input (volt-free)
DIO 1 – 6
DIO COM
7