ABB Symphony Harmony Series, Instruction, Page: 201 / 402

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
SW 2 : SP EC IA L O PE R AT IO N S P 4: R E D U N DAN C Y L IN K P1 : P OW E R P5 : C O M M U N IC AT IO N F IE LD PO W E R S EL EC T
J1 J2
LOCAL (LFP)
Elsag B ailey
W illiam sp ort, PA .
U.S .A .
INTE RNAL (IFP )
POW ER CO NSUM PTION
P-HB-AIN-12010000
ATTENTIO N
EL E CT RO STATIC
S EN SITIVE
DE VICE S
( Se e Instru ctio ns)
+24VDC ,32 0m A
E S D
8 7 6 5 4 3 2 1
T 00913B
C L O S ED
O PEN
Table 7-4. Special Operations Switch (SW2) Settings
Switch Position (SW2)
Condition
8 7 6 5 4 3 2 1
1 1 1 1 1 1 1 1 Normal operation
1 0 1 1 1 1 1 0 Initialize
0 x x x x x x x Diagnostic mode (refer to Diagnos-
tics
in Section 8)
NOTE : 0 = off 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 and Color Coding
Marking/Color Description
+24 V
+
–
Current loop power
Positive terminal
Negative terminal