Carrier Zone Ctrl II - Inputs; Analog Outputs; Binary Outputs

Installing the Zone Ctrl II
Zone Ctrl II and
VAV Zone II Secondary Duct Installation and Start-up Guide CARRIER CORPORATION ©2019
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Inputs
The Zone Ctrl II has 4 inputs that accept the following signal types.
These
inputs...
Support this
signal type...
Description
All Thermistor Precon type 2 (10 kOhm at 77°F)
Input voltage: 0.33 to 2.52 Vdc
All Dry contact A 3.3 Vdc wetting voltage detects contact position, resulting in a 0.3 mA
maximum sense current when the contacts are closed.
IN-1, IN-2 0–5 Vdc 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.
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).