3 led wiring, 3 led wiring -23 – Honeywell INTELLIKNIGHT 5820XL User Manual

Page 63

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Control Panel Installation

151209

4-23

4.8.3

LED Wiring

There are four 12-pin connectors on the 5880 board for connecting LEDs. Each LED
gets its power from Pin 11. Internal resistors are sized so that there is approximately
10 mA of current for each LED, no series resistors are required. LED outputs can be
mapped to output circuits. See Section 6 for programming details.

Wire the LEDs as shown in Figure 4-22.

On connector P1, Pin 12 is an open collector output for controlling a PZT. If used, the
5880 PZT will match the PZT pattern of the on-board (or 5860) annunciator.

Note: The circuit connected to “Open Collector Output” (last pin on P1) must be current limited so that

no more than 100 mA of current is allowed to flow into the open collector transistor.

Figure 4-22 5880 Board Layout

11

20

12
13
14
15
16
17
18
19

LED Power

no connection

Anode

Cathode

LEDs

P2

5880 LED Outputs

1

10

2
3
4
5
6
7
8
9

LED Power

Programmable Open Collector Output

Not mappable.

Matches PZT pattern

on on-board

annunciator

Anode

Cathode

LEDs

P1

Connectors P3 and P4 wired same as P2.

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