On the sensor bus terminal strips, terminal 
1 of the PSI0 module is connected to terminal 1 of each of the other modules; terminals 2 and 3 are connected in the same manner. (See Fig. 13.) If a terminal 2 wire is con- nected to terminal 1, the system will not work.
in the 30HK,HS units, the processor module, low- voltage relay module, and keyboard! display module are all powered from a common 21 vat power source which connects to terminals 1 and 2 on the power input strip of each module. A separate source of 12.5 vat power is used to power the EXV driver module through terminals 1 and 2 on the power input strip.
PSI0DSIODSIOHSIO
(RELAY) (EXV DRIVER)
Fig. 13 - Sensor Bus Wiring
Processor Module (PSIO) (Fig. 14.)
Inputs - Each input channel has 3 terminals; only 2 of the 3 terminals are used. The application of the machine determines which terminals are used. Always refer to the individual unit wiring for terminal numbers.
Outputs ~ Output is 24 vdc. Again, there are 3 terminals, only 2 of which are used; which 2 depends on the appli- cation. Refer to unit wiring diagram.
NOTE: Both address switches must be set at zero.
b CHASS IS G R O U N D
mm* 0
N E T W O R K
sfNNECTOR
| ‘(FORWARD) | |
ADDRESS ’ 0 | SENSOR BUS | |
58” NECToR | ||
SW trcnEs | ||
0 |
| |
PSI0 |
|
r#2j?2rt.s - - Inputs on strip .J3 arc discrcti: inputs (ON- OFF). When 24 vat are applied itcross the 2 tcrminah in a channel it is read as an ON signal, Zero vnl$s is read as an OFF signal.
0ulput.s - Terminal strips 54 and .J5 are internal relays
whose coils are
which they are connected. No power is supplied to these connections by the DSIO module.
S E N S O R B U S C O N N E C T O R
/
INPUTS | : 24 | VAC |
|
+ |
| + |
|
CHANNEL I - J3 PINS 18 2 | |||
| 2 - |
| 3 8 4 |
I | 3 - | I 586 | |
| 4 - |
| 788 |
2,4,6 88 ARE GROUND (C1
COMMON
C H A N N E L
Is
%fMoN
,%~MON
&MON
1:
C%MoN
C&MON
K
C O M M O N
NO
C&MON
3
ADDRESS ADJUSTMENT
I(NOT SHOWNI ON UNDERSIDE.
Fig, 15 -
Fig. 14 - Processor Module (PSiO)
24
