Rice Lake Digital/Diagnostic - iQube - Manual (Page 11)

8 iQUBE Installation Manual
2.7 Digital I/O
The iQUBE junction box is available with support for eight channels of digital I/O.
Digital inputs can be set to provide many indicator functions, including all keypad functions. Digital inputs are
active low (0 VDC), inactive high (5 VDC).
Digital outputs are typically used to control relays that drive other equipment. Outputs are designed to sink,
rather than source, switching current.
Each output is a normally-open collector circuit, capable of sinking 25 mA when active. Digital outputs are wired
to switch relays when the digital output is active (low, 0 VDC) with reference to a 5 VDC supply. Auxiliary
power is available at connector J20 (see Figure 2-2 on page 4).
Table 2-6 shows the pin assignments for connector J21.
Digital inputs and outputs for the 920i indicator are configured using the DIG I/O menu.
J21 Pin J21 Signal
1 I/O 1
2 I/O 2
3 I/O 3
4 I/O 4
5 I/O 5
6 I/O 6
7 I/O 7
8 I/O 8
Table 2-6. J21 Pin Assignments (Digital I/O)