Processor Module (Psio); Low-Voltage Relay Module (Dsio) - Carrier 040-420 Installation And Service Manual

DRIVER)
Fig. 19 - Sensor Bus Wiring
(Communications)
PROCESSOR MODULE (PSIO) (Fig. 20)
Inputs - Each input channel has 3 terminals; only 2 of the
used.
terminals are Application of machine determines which
terminals are used. Always refer to individual unit wiring
for terminal numbers.
Outputs
of which are used, depending on application. Refer to unit
wiring diagram.
NOTE: Address switches (see Fig. 20) must be set at 01
(different when CCN connected).
0
A D D R E S S
S W I T C H E S
Fig. 20 - Processor Module (PSIO)
( L I D ) ( 4 I;W;UT
C H A S S I S
G R O U N D
-( REAR)
N E T W O R K
S E N S O R B U S
0
C O N N E C T O R
J8
0
I -
6 5
LOW VOLTAGE RELAY MODULE (DSIO) (Fig. 21)
Inputs - Inputs on strip 53 are discrete inputs (ON/OFF).
When 24vat power is applied across the 2 terminals in a
channel it reads as on signal. Zero v reads as an off signal.
Outputs - Terminal strips J4 and JS are internal relays whose
coils are powered-up and powered-off by a signal from micro-
processor. The relays switch the circuit to which they are
connected. No power is supplied to these connections by
DSIO module. L
S E N S O R B U S C O N N E C T O R
RED STATUS LIGHT - b
RELAYS ", :
A D D R E S S A D J U S T M E N T
(NOT
LEGEND
Open
Fig. 21 - Low-Voltage Relay Module (DSIO)
(C)
NEL I2
I I
I
9
8
7
COMMON
NO
6
5
SHOWN) ON UNDERSIDE