Related Documentation; System Planning; Basic Design Rules - Honeywell SEC-H-602 Manual

Related Documentation

For more information on mounting and wiring a WEBs-AX
Security system, refer to the following documents:
• Remote 2 Reader Module (SEC-H-R2R/U) Installation
Instructions, Form number 95-7749
• Remote I/O Module (SEC-H-RIO/U) Installation
Instructions, Form number 74-4060
• Medium (SEC-ENC-H-1/U, SEC-ENC-H-1NP/U) and
Large (SEC-ENC-H-2/U, SEC-ENC-H-2NP/U) Security
Enclosure Install Guide, Form number 95-7747
• Small (SEC-ENC-H-3/U) Security Enclosure Install
Sheet, part number 95-7748
For details on software configuration for a fully functioning
security system, refer to the following documents:
• WEBs-AX Enterprise Security Guide, Form number
74-4086

SYSTEM PLANNING

The following sections provide information necessary to
plan a WEBs-AX Security System using a Security
Controller. Because of the flexibility of the system
architecture, a number of factors may be in play.
• "Basic Design Rules" on page 5
• "Estimating Power and Battery Requirements" on
page 6
• "Voltage Drop Considerations" on page 7 and
"Maximum Output Load Considerations" on page 8

Basic Design Rules

1. If more than one security controller is required for a
project, an Enterprise Security server is necessary
to provide management of the card holder database
from a single user interface. The controller provides
access control for 2 doors (one reader per door),
plus additional I/O points. See "Onboard Security I/
O" on page 2.
2. A maximum of 15 additional SEC-H-R2R/U (2
reader) modules and SEC-H-RIO/U (remote I/O)
modules total, in any combination. Note that license
expansion packs are required if a SEC-H-616
model using both the reader inputs plus over seven
(7) 2 reader modules; or if a SEC-H-602 model
using both the reader inputs, plus any 2 reader
modules.
3. All expansion modules must be connected to the
Security Controller on an RS-485 communications
trunk, using a daisy chain topology. Also, each
SEC-H-602 AND SEC-H-616 SECURITY CONTROLLER
reader must be located within 500 feet of the reader
input used. For related details, see "Connection
Overview" on page 13.
4. Because readers are powered by the Security Con-
troller and any SEC-H-R2R/U modules, system
power requirements vary depending on the exact
reader models used. Identify the power used/amps
drawn by readers.
5. The Security Controller requires 15Vdc primary
power—typically, this is supplied by the integral
power supply of the required SEC-ENC-H-1/U or
SEC-ENC-H-2/U model enclosure. Note that 15Vdc
is required so that the Security Controller can keep
its attached 12V backup battery(ies) trickle
charged.
6. Expansion modules can be powered from 12–
15Vdc—modules directly attached (in same enclo-
sure) with the Security Controller use the enclo-
sure's 15Vdc source and backup battery. On larger
jobs, when installing additional SEC-ENC-H-1/U or
SEC-ENC-H-2/U enclosures to house (remote)
expansion modules, expansion modules are pow-
ered by the local (enclosure) power supply, where
you can wire the backup battery supply from the
enclosure with the Security Controller (at a maxi-
mum of 2.5A load). This method uses a single pair
(2 twisted conductor) cable to connect terminals
"PS-, "BB".
If installing a non-powered enclosure (SEC-ENC-H-
1NP/U, SEC-ENC-H-2NP/U, SEC-ENC-H-3/U) to
house one or more expansion modules, you can
either:
• Wire a "triad" (3 twisted conductor) cable back to
the Security Controller enclosure, for both 15Vdc
power and battery backup (terminals "PS+, "PS-,
"BB"). Be sure that the total load on the power
supply is less than 2.5 Amps, and that the
voltage drop across the wires is less than 3 Vdc
so that the remote modules are powered by at
least 12 Vdc.
• Use a third-party, battery-backed, 12Vdc power
supply to locally power the remote expansion
modules. Monitor the battery fail and power fail
contacts of the power supply using remote
module digital inputs. See the expansion module
installation documents for more details.
7. When the system is operating on backup battery
(AC power lost scenario), system operation for a
minimum of 4 hours is the intended goal. To achieve
this, size the Backup Battery(ies) accordingly, using
the section Estimating Power and Battery Require-
ments below.
5 31-00012—03