Component Identification
Safety Precautions
6
Figure 4. Component Locations USIOM Board
LEGEND FOR NUMBERED BOXES IN Figure 4
1. Power Supply Board (protective cover removed)
2. 20-pin connector for CPU-to-USIOM board cable
3. DC output cable
4. AC input cable
5. Fuses F7 and F1
6. Relay output fuses F2 (R2) and F4 (R1)
7. Fuse F6 24 Vdc (Expansion option)
EB25918024
1
2
3
4
5
6
7
8
9
10
11
12
INTRINSICALL
Y SAF
E
W
IRING TERMINALS
W
ARNIN
G
:
S
UB
S
TITUTI
O
N
O
F
CO
MP
O
NENT
S
MA
Y IMP
AIR INTRIN
S
IC
S
AFETY
. INTRIN
S
IC
ALL
Y
S
AFE
C
IR
C
UIT
S
ARE AL
SO
RA
TED
A
S
C
LA
SS
2
C
IR
CU
IT
S
. TERMINAL
S
ARE F
O
R
CO
NNE
C
TI
O
N T
O
I.
S
. T
ANK
PR
O
BE
S
AND
S
EN
SO
R
S
US
ED IN
C
LA
SS
1
G
R
O
UP D HAZARD
O
U
S
L
OC
AT
IO
N
S.
MAX. AC
INPUT RATINGS
120/240 Vac, 2.0 A
MAX. RELAY
CONTACT RATING
120/240 Vac, 5A
30 Vdc, 5A
FUSE RATING, 5A
250 Vac TYPE T
(SLO-BLO)
MAX. EXTERNAL
CONTACT CLOSURE
CIRCUIT RATINGS
12 Vdc, 0.015A
N
G
L
0°C
≤
Ta
≤
50°C
FOR SUPPLY CONNECTION, USE WIRES
RATED FOR AT LEAST 90°C.
RELAY 2
RELAY 1
RTN
12V
PWR STAT
PWR INT
F1
F2
5A
(SLO-BLO)
F4
5A
(SLO-BLO)
F6 0.75A (SLO-BLO)
F7
1
3
2
5
6
7
4
