7 - 6 WBPEEUI240751C0
I/O Block
Termination Base Color Coding and Markings
Field wiring attaches to the terminal strips located behind the
front access door on a termination base (Fig. 7-1). To simplify
installation, field wiring terminals are clearly marked to iden-
tify positive (+) and negative (–) polarity; and three-wire RTD,
normally open relay contact, and normally closed relay contact
wiring connections. Additionally, input and output channel
terminals are color coded for easier recognition. The markings
and color coding together allow wiring the input and output
channels without requiring any additional documentation.
Table 7-5 summarizes the markings and color code meanings.
Figure 7-2. I/O Module Rear Panel
SW2 : SPEC IAL OPE RATIONS P4: R EDU NDANCY L IN K P1: POW ER P5: C OMM UNICATION FIELD POW ER S ELECT
J1 J2
LOCAL (LFP)
Elsag Bailey
Williamsport, PA.
U.S.A.
INT E RNAL (IFP )
POWER CO NSUMPTION
P-HB-AIN-12010000
ATTE N T IO N
EL E C T R O S TATI C
SENSITIVE
DEVICES
(See Instructions)
+24VDC,320mA
ESD
87654321
T00913B
CLOSED
OPEN
Table 7-4. Special Operations Switch (SW2) Settings
Switch Position (SW2)
Condition
87654321
11111111Normaloperation
10111110Initialize
0 x x x x x x x Diagnostic mode (refer to
Diagnos-
tics
in Section 8)
NOTE: 0 = o ff or open; 1 = on or closed. The on position is the switch up position when looking at
the I/O module as shown in Figure 7-2.
Table 7 -5. Terminal Strip Markings an d Co lor C oding
Marking/Color Description
+24 V
+
–
Current loop power
Positive terminal
Negative terminal
To Next Page
Loading...
