4: Dry Contact Wiring - Honeywell 6820 Manual

Control Panel Installation
On connector P1, Pin 12 is an open collector output for controlling a piezo. If used, the 5880 piezo will match the piezo pattern of the
onboard or remote 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.
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
LED9
LED10
LED Power
no connection
LED11
LED12
LED13
LED14
LED15
LED16
LED17
LED18
LED19
LED20
LED Power
no connection
4.13.4 Dry Contact Wiring
The 8 input circuits on the 5880 board are for monitoring switch inputs. Any type of switch supported by the control panel can be used with
the 5880. For example, you can use a 5880 to monitor pull stations, water flow, tamper, reset, or silence switches.
Wire dry contacts as shown in Figure 4.37. Notice grouping of terminals. Power terminals are shared by two inputs.
4.7kΩ EOL
resistors
5880
46
P1
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
P2
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
Figure 4.36 5880 Board Layout
IN - 48 C+ IN - 47 IN - 46 C+
Figure 4.37 Dry Contact Wiring
IN - 45 IN - 44 C+ IN - 43 IN - 42
6820/EVS Manual — P/N LS10144-001SK-E:E 4/6/2022
5880 LED I/O Module
Cathode
LEDs
Anode
Cathode
P3 and P4 are wired
LEDs
the same as P2.
Anode
supervised
wiring
C+ IN - 41