Armstrong EHU-700 Series Manuel d'utilisateur télécharger pdf

Bult. 515-A

Installation and Maintenance

THE SERIES EHU-700 COMMUNICATIONS LINK PROGRAM

An engineer in the central control room of a large facility served by several remotely located humidifiers

has previously only had an alarm signal to notify him of a problem. With the EHU-Link he can periodically

check the operation

of the

humidifiers and examine the diagnostic message remotely in the case

of an

alarm.

If actuating the tank contactor or drain valve will alleviate a problem, this can also be accomplished.

The EHU-Link is a communications program allowing information to be passed between Armstrong Series

EHU-700 electronic humidifiers and an IBM PC (or its equivalent). It is available on either

5-l/4” or 3 l/2” media. The program can address up to 10 Series EHU-700 humidifiers in a daisy chain

configuration using a dedicated serial communication port on the PC (choose 1 of 4) and a convertor

attachment. Communications is established using the RS-485 protocol, allowing up to 4,000 feet between

the computer and the final humidifier in the chain (see Figure 1). The EHU-Link program allows for

remotely controlling the tank contactor and drain valve, and allows complete monitoring

of all

Series EHU-

700 functions. These include; drain valve, fill valve, and tank contactor status, current consumption,

percent power and demand,

unit operating status, and

diagnostic message (if any).

All Series EHU-700s

equipped with an E-PROM

Version 3.6 or greater (Fig-

ure 3) are equipped to inter-

face directly with RS-485

communications lines.

Please contact Armstrong

International or your local

Armstrong Representative if

you wish to use EHU-Link

on a humidifier with an

E-PROM pre-dating this ver-

sion.

Figure 1

EHU

REMOVE JP1

R:%vE

RETA IN

JPl

4000

FT-

FOR MORE INFORMATION ON ARMSTRONG SERIES EHU-700 HUMIDIFIERS PLEASE

REFER TO BULLETINS #514 AND #527.

1 2 3 4

Résumé du contenu

Page 1 - Installation and Maintenance

--Bult. 515-AInstallation and MaintenanceTHE SERIES EHU-700 COMMUNICATIONS LINK PROGRAMAn engineer in the central control room of a large facility ser

Page 2 - INSTALLING THE WIRING

SERIES EHU-700 COMMUNICATIONS LINKThe communications ports on most PCs are RS-232 protocol but theSeries EHU-700 requires RS-485, so an RS-232-to-RS-4

Page 3

eA4!kSERIES EHU-700 COMMUNICATIONS LINK4.5.6.SET THE TERMINATION. The communications linesmust be terminated at the end of each line only. Jumpershav

Page 4 - A1711StDXD~~w

SERIES EHU-700 COMMUNICATIONS LINKOPERATING THE PROGRAMThe first screen is a title page. After you have read it, push the enter key.1.2.3.4.5.PORT SEL