Starting or stopping a Defrost Cycle using the binary input (BIN) - PENN Controls - A421ABD - A421AED - Electronic Temperature Control - A421 Off‐Cycle Defrost Model

A421 Series Electronic Temperature Controls with Off-Cycle Defrost Installation Guide

Brand
PENN Controls
Product name
A421 Off‐Cycle Defrost Model
Document type
Installation Guide
Part number
24-7664-3035
Document revision
E
Revision date
2022-08-25
Language
English

About this task

In this task, you start or stop a Defrost Cycle using the Binary Input (BIN).

Procedure

Connect a momentary contact switch between BIN and COM on the T3 terminal block.
Each time the momentary contact switch is pressed, the defrost cycle starts or stops depending on whether the defrost cycle is running or not. See Figure 1.
Figure 1. Starting and stopping a dFT: behavior using SdF parameter and momentary contact switch