Watlow Relay Interface Board User Manual

Relay Interface Board
User’s Guide

Watlow Controls

1241 Bundy Blvd.
Winona, MN 55987

Customer Service

Phone: [phone]
Fax: [phone]

Technical Support

Phone: [phone]
Fax: [phone]
Email: [e-mail]

Doc. No. 22822-00. Revision 2.1
June 1998

Warranty

Watlow Anafaze, Incorporated warrants that the products furnished under this
Agreement will be free from defects in material and workmanship for a period of
three years from the date of shipment. The customer shall provide notice of any
defect to Watlow Anafaze, Incorporated within one week after the Customer's
discovery of such defect. The sole obligation and liability of Watlow Anafaze,
Incorporated under this warranty shall be to repair or replace, at its option and
without cost to the Customer, the defective product or part.

Upon request by Watlow Anafaze, Incorporated, the product or part claimed to be
defective shall immediately be returned at the Customer's expense to Watlow
Anafaze, Incorporated. Replaced or repaired products or parts will be shipped to the
Customer at the expense of Watlow Anafaze, Incorporated.

There shall be no warranty or liability for any products or parts that have been
subject to misuse, accident, negligence, failure of electric power or modification by
the Customer without the written approval of Watlow Anafaze, Incorporated. Final
determination of warranty eligibility shall be made by Watlow Anafaze,
Incorporated. If a warranty claim is considered invalid for any reason, the Customer
will be charged for services performed and expenses incurred by Watlow Anafaze,
Incorporated in handling and shipping the returned unit.

If replacement parts are supplied or repairs made during the original warranty period,
the warranty period for the replacement or repaired part shall terminate with the
termination of the warranty period of the original product or part.

The foregoing warranty constitutes the sole liability of Watlow Anafaze,
Incorporated and the customer's sole remedy with respect to the products. It is in lieu
of all other warranties, liabilities, and remedies. Except as thus provided, Watlow
Anafaze, Inc. disclaims all warranties, express or implied, including any warranty of
merchantability or fitness for a particular purpose.

Relay Interface Board Installation Guide

Relay Interface Board Installation Guide

Introduction

The Relay Interface Board (RIB) replaces the standard I/O terminal board. It con­nects a Watlow Anafaze controller to a third-party I/O board with 8, 16, 24, or 32
relays.

This document lists system requirements, specifications and explains how to install
and wire the RIB.

1

Relay Interface Board Installation Guide

System Requirements

Choose which of the controller’s digital inputs and outputs are needed. Refer to

Table 3 and 4

for a 32-module I/O board. An 8-module I/O board contains the first eight modules
of the 24-module board, a 16-module board contains the first 16 modules of the 24­module board, etc.

8, 16 and 24-module I/O boards are connected to J2 and J3 on the RIB.

•

32-module boards connect to J4 only.

•

The system safe and global alarm outputs are available via J2 and TB1 only. To con­nect to all of the digital inputs and outputs, use two 24-module boards.

A 32-module board connected to J4 provides outputs for 32 heat-only loops or for 16
heat/cool loops.

MLS300 and CLS200 controllers have a 50-pin, SCSI-II, female connector for digi­tal I/O. You will have to make or obtain from Watlow Anafaze a cable that connects
from SCSI to ribbon cable in order to use the RIB with these controllers.

for connections for 24-module I/O boards or

Tabl e 5

for connections

2

Hardware Requirements

Relay Interface Board Installation Guide

Choose I/O modules designed to operate with +5 Vdc power. Watlow Anafaze
systems are designed to operate at this voltage.

Choose I/O boards which have 50-pin headers with long latch levers. Short latch
levers will not Watlow Anafaze cables.

Calculate the maximum current requirement of the desired I/O boards. If they require
more current than the controller can supply, use an external power supply.

3