iNS/iDS 2-Wire System Manual
350-077
Rev. D - 1/20/2021
Page 20 of 107
The card edge pin assignments are listed here for reference:
A
Logic Common
N
No Connection
B
+24VDC
P
PBS In #3+
C
No Connection
R
PBS In #3-
D
PBS In #1+
S
PB Out #3+
E
PBS In #1-
T
PB Out #3-
F
PB Out #1+
U
PBS In #4+
H
PB Out #1-
V
PBS In #4-
J
PBS In #2+
W
PB Out #2+
K
PBS In #2-
X
PB Out #2-
L
Earth Ground
Y
PB Out #4+
M
No Connection
Z
PB Out #4-
While the four PBS inputs are labeled individually, they are actually combined into a single connection pair on the
iCCU-C2 card. The iCCU-C2 Hardware Kit includes an Interconnect Board (P/N: iN2-ICB-C) which has a dual purpose.
First, it serves to wire jumper the four phases of field wiring together to act as a single pair. Second it provides a means of
injecting power from a separately installed 24V power supply, which powers the iNS2 PBS units in the field.
Installation should begin by setting the peds to recall. Then remove existing push buttons from the poles.
In the cabinet, the iN2-ICB-C Interconnect Board should be mounted near the terminal block for the push button field
wiring. Screws are provided for attachment to the equipment rack. The free ends of the six wires should be connected to
the aforementioned terminal block, referring to the labeled position identified for each wire. The 24V power supply should
be mounted near the Interconnect Board. Screws are provided for attachment to the equipment rack. The output wires
should be connected to the Interconnect Board termina
l block labeled “Power”, with red to + and black to -. The AC input
cord for the 24V power supply should be connected to a surge protected source of AC Line, AC Neutral, and Earth
Ground. Do not connect the input cord to the power supply until the system installation is completed.
The C4 cable adapter should be installed next. This requires the intersection to be placed in FLASH. Once in FLASH,
disconnect the C4 connector on the rear of the Output File panel. Connect the existing cable connecter to the mating
connector of the adapter. Connect the other large adapter connector to the Output File panel. Route the smaller cable and
connector to the front of the cabinet Input File. The intersection may be taken out of FLASH. Now the iCCU-C2 may be
inserted into the Input File, replacing two Type 242 isolators in locations I-12 and I-13 (with the card edge plugged into
I-13). Connect the C4 adapter cable to the iCCU-C2 front panel. Complete the installation with the iNS2 PBS mounting
and wiring per the next section. Following this, the 24V power supply may be connected.
