Honeywell

XL50A

XL50 Series • HVAC Controller

Type HVAC

Application AHU

Probe Inputs 4

Relay Outputs 4

Communication RS485 / BACnet

Panel Size DIN rail mm

R1 Heat

R2 Cool

R3 Fan

R4 Damper

Programmable HVAC controller for air handling units

Technical Specifications

Relay Outputs	4
Relay Rating	2A/24VAC

Operating Temp	0 to 50°C
Storage Temp	-20 to 70°C

Terminal	Function	Type	Wire Color
24V	Power +	Input	red
GND	Power -	Input	black
AI1	Analog Input 1	Input	white
AI2	Analog Input 2	Input	white
AI3	Analog Input 3	Input	white
AI4	Analog Input 4	Input	white
DI1	Digital Input 1	Input	gray
DI2	Digital Input 2	Input	gray
DO1	Digital Output 1	Output	black
DO2	Digital Output 2	Output	black
AO1	Analog Output 1	Output	yellow
AO2	Analog Output 2	Output	yellow
A	RS485/BACnet +	Comm	blue
B	RS485/BACnet -	Comm	yellow

Important: Always disconnect power before wiring. Verify terminal numbers with the actual controller label before connecting.

Code	Parameter	Range	Default	Description
SP	Setpoint	-40 to 100	22 °C	Control setpoint
IN1	Input 1 Type	0=NTC, 1=mA, 2=V	0	Input 1 config
IN2	Input 2 Type	0=NTC, 1=mA, 2=V	0	Input 2 config
Pb	Prop Band	0.1 to 100	5 °C	PID P
Ti	Integral	0 to 999	300 s	PID I
Td	Derivative	0 to 999	0 s	PID D
OAL	OA Lockout	-40 to 40	0 °C	Outside air lockout
Sch	Schedule	0=Off, 1=7-Day	0	Time schedule
Addr	Address	1 to 247	1	Network address