Alpha Technologies SD08 - Manual (Page 9)

Argus Technologies Ltd. 018-546-C0 Rev C WC
Printed in Canada. © 1999 Argus Technologies Ltd. ARGUS is a registered trademark of Argus Technologies Ltd. All Rights Reserved. Page 1 of 11
1 Introduction
1.1 Scope of the Manual
This instruction manual explains the features, installation and operation of the SD08 Battery Fail Monitor from
Argus Technologies.
NOTE: To aid the user with installation, frequent reference is made to drawings located at the rear of this manual.
1.2 Product Overview
The SD08 Battery Fail Monitor module (see Figure 1) is designed to monitor the status of a single battery string.
The method used is ‘battery midpoint voltage monitoring.’ The SD08 connection to the battery string splits the
battery string voltage in half at the midpoint. The string voltage halves are compared and if the difference between
the two exceeds the programmed value (set by front panel rotary switch) then an alarm is sent to the Argus
system controller or directly to the customer’s office monitoring system via the contacts on a Form “C” relay. The
local alarm indication (red LED) is latching and requires manual intervention to reset (front panel push button).
Figure 1–Front view of SD08, List 80 (approximate size)
A complete battery monitoring system consists of one or more SD08 modules installed in a 19” or 23” panel or
cabinet (see Figure 2). Additional SD08 modules can be added at a later time after the system has been installed;
e.g. when additional battery strings are added.
1.3 Part Numbers and List Options
This product is available to order under the following Argus part numbers and list options:
Description Part Number/List Option
SD08 Battery Fail Monitor ..........................................................................................................................018-546-20
Basic Unit ........................................................................................................................................................... *List 0
19” Rack Mount..................................................................................................................................................List 19
23” Rack Mount..................................................................................................................................................List 23
Wall Mount (chassis for stand-alone unit)..........................................................................................................List 25
Gray Finish ....................................................................................................................................................... *List 55
SD08 Battery Fail Monitor Module .....................................................................................................................List 80
Blanking Plate ....................................................................................................................................................List 90
* Default option, consult factory for up-to-date ordering information.