iNS/iDS 2-Wire System Manual
350-077
Rev. D - 1/20/2021
Page 68 of 107
Each detector BIU communicates call status for up to 16 detector inputs. When configured as a detector BIU, the
iCCU-S2 uses the first 8 detectors. See the table below for detector input numbers and how they need to map to
pedestrian inputs.
Note: A NEMA TS 2 Traffic
Controller can only communication
with a single BIU at each SDLC
address. If the iCCU-S2 is
configured to a BIU number that
already has a BIU device with the
same number (address), then the
other BIU device with the matching
number needs to be disconnected.
To configure the iCCU-S2 as a BIU,
go to the “Cabinet Ped Interface” Menu and select an available detector BIU number and the proper pedestrian load
switch configuration for the cabinet. If the pedestrian load switch configuration is not listed, or more than 4 pedestrian
phases are needed, select the Advanced Load Switch Channel Settings option and click the Advanced Settings
button, then assign the appropriate phases to load switch channels.
Configure the Traffic Controller to enable the detector BIU number selected. Program the Traffic Controller to remap
the detector inputs to Ped inputs according to the table above. Consult your Traffic Controller manual or manufacturer
for instruction on how to do this.
BIU#1
BIU#2
BIU#3
BIU#4
Pedestrian
Mapping
Det Input 1
Det Input 17
Det Input 33
Det Input 49
Ped Input 2
Det Input 2
Det Input 18
Det Input 34
Det Input 50
Ped Input 4
Det Input 3
Det Input 19
Det Input 35
Det Input 51
Ped Input 6
Det Input 4
Det Input 20
Det Input 36
Det Input 52
Ped Input 8
Det Input 5
Det Input 21
Det Input 37
Det Input 53
Ped Input 1
Det Input 6
Det Input 22
Det Input 38
Det Input 54
Ped Input 3
Det Input 7
Det Input 23
Det Input 39
Det Input 55
Ped Input 5
Det Input 8
Det Input 24
Det Input 40
Det Input 56
Ped Input 7
