TruPortal Input Expansion Board Quick Reference
5
VBUS
VBUS is an internal communication bus that related VBUS
modules are used with. The VBUS is not intended for external
use. It is designed to be used in a protected enclosure with
adjoining interconnection between modules in the same
enclosure. VBUS devices must be located behind the tamper
switch of its host device. Therefore, the wire length cannot exceed
the size of the box. Three conductors are required.
Figure 7: 16 TP-ADD-IN-BRD with VBUS
Alarm Input Wiring
The Input Expansion module contains 16 software-configurable
alarm inputs that can be used for alarm device monitoring. Each
input can be configured, via the TruPortal User Interface, as either
NO (normally open) or NC (normally closed) in combination with
either supervised or non-supervised wiring.
Figure 8: Alarm Input Wiring
Power
Power is supplied to the Output Expansion board from the Input
Expansion board. Power for the Input Expansion board can be
passed through the SNAPP connection.
Optionally, auxiliary power may be used to power the I/O
Expansion Module. The 12 VDC auxiliary output (at TB13)
supports up to 10 mA.
Callout
Description
Callout
Description
1
Terminal Block (TB) 7
— TB10 inputs
9
TB13 Auxiliary power
input; +12 V
2
TB1 tamper (off-the-
wall)
10
4 mounting holes:
0.156 in. (04 mm)
3
SW1 front tamper
switch (enclosure)
11
TB2 Module (SNAPP)
bus; +12 V, ground, Data
A and B
4
P1 jumper to disable
front tamper
12
TB11 VBUS AUX; +12V
5
Not used
13
TB12 output 1 and 2;
open collector
[1]
1. These outputs are used to drive an external devices like an alarm
relay. The output is controlled by use of a bypass resistor.
6
Processor OK LED
(green)
14
TB3 —TB6 inputs
7
VBUS active LED
(yellow)
15
OP1 and OP2 output
LEDs (green)
8
Power On LED (green)
16
SW2 bottom (off-the-wall)
tamper switch
Callout
Description
1
Door Contact or Request to Exit NC
[1]
1. Typical for each Input IN1 — IN16; state
must match or follow the door state.
2
Door Contact or Request to Exit NO
[1]
3
1K 1% resistor typical
[2]
2. Install resistors as close to door as possible
4
Input
5
COM/Shared