Table of Contents
Advertisement
Inputs
The Zone Ctrl II has 4 inputs that accept the following signal types.
These
Support this
inputs...
signal type...
All
Thermistor
All
Dry contact
IN-1, IN-2
0–5 Vdc
IN-3, IN-4
Thermistor
Dry contact
Analog outputs
The Zone Ctrl II has one analog output that supports voltage. The controlled device must share the same ground
as the controller and have the following input impedance:
0–10 Vdc
Minimum impedance 2000 Ohms, max 5 mA
NOTE Ohm's law: -10V/.005a = 2000 Ohms
Binary outputs
The Zone Ctrl II has three normally open binary outputs rated at 1A, 24 Vac/Vdc.
See To wire inputs and outputs for more information (page 18).
Zone Ctrl II and
VAV Zone II Secondary Duct Installation and Start-up Guide
Error! No text of specified style in document.
Description
Precon type 2 (10 kOhm at 77°F)
Input voltage: 0.33 to 2.52 Vdc
A 3.3 Vdc wetting voltage detects contact position, resulting in a 0.3 mA
maximum sense current when the contacts are closed.
The output impedance of a 0–5 Vdc source must not exceed 100 Ohms. The
input impedance of the Zone Ctrl II is approximately 30 kOhm.
17
Installing the Zone Ctrl II
CARRIER CORPORATION ©2019
All rights reserved
Advertisement
Table of Contents
