Fike Quadnet - Advanced Operation and Access Levels; Access Level 1 (Normal) Operation; Access Level 2 A (User) Functions

Quadnet Control Panel Engineering and Commissioning Manual
12
Loop Loading
In order to allow a method of calculating the maximum loop loading that the system will support, each
device has a rating assigned in Device Loading Units (DLUs). This relates to the load presented in alarm. A
maximum of 450 DLUs are permissible on each loop (subject also to a maximum of 200 addressable
devices, whichever limit is reached first).
The DLUs of the current models of devices as at October 2011 are as follows:
PRODUCT DESCRIPTION
DLU RATING
Type
Product
Code
Subtype SP0
- Off Low Medium High
MP
203 0003
Multipoint Mk3
1
-
-
-
205 0003
ASD Mk3
1
-
-
-
MPS
203 0001
Multipoint with Sounder Mk3
1
1.5
4.5
6
205 0001
ASD with Sounder Mk3
1
1.5
4.5
6
205 0012
ASD with Sounder/Strobe Mk3
4.5
5
8
10
MCP
403 0006
403 0007
Manual Call Point Mk3 3 - - -
SOUNDER
313 0001
313 0002
Soundpoint Mk3 1.5 2 4 5.5
323 0001
Hipoint Mk3
1.5
2
4
5.5
303 0013
Bell Mk2
2
22
22
22
303 0012
303 0022
Flashpoint 1.5 4.5 6.5 8
326 0021
326 0023
Sounder/Strobe 9 9.5 11.5 13
326 0001
326 0003
Sounder 1.5 2 4 5.5
326 0015
Strobe
9
-
-
-
I/O
803 0006
Loop I/O Module Mk2
10.5
-
-
-
CZM
803 0010
Conventional Zone Module
(Loop Powered)
23.5 - - -
803 0010
Conventional Zone Module
(Ext PSU)
3.5 - - -
ANCILLARY
803 0003
803 0005
Multipoint I/O Module (in Relay
Base)
Multipoint I/O Module (in Box)
3 - - -
600 0092
Remote Indicator
0.5
-
-
-
The Quadnet OSP programming software v2.02 or later (v2.04 or later required for the latest devices)
automatically keeps control of the quantities and DLU ratings of devices on the loop and will warn the
engineer if the limit is reached. It will not allow a system to be programmed to exceed the maximum DLU
rating. It can detect the type of the device and, in the case of devices manufactured from March 2010, the
subtype from the above list as well. For devices manufactured prior to this date, the Quadnet OSP will
attempt to detect the subtype and use the appropriate DLUs. The engineer can override the automatically
detected subtype if required ie. if the OSP cannot correctly identify an older device, the engineer can tell the
system that the device is a different subtype to the one OSP has selected (eg. Soundpoint instead of
Flashpoint) within the same main type.
Note: 1) An Excel spreadsheet (document no. 26-1049) is also available to automatically work out
both standby battery calculations and loop loading calculations based on the quantities
entered. This includes ratings for legacy devices as well as the above current models.
2) Whilst the system will operate a maximum of 800 devices per control panel, for compliance
with EN54-2, it is recommended that a limit of a maximum of 512 detection devices is
adhered to. This includes detectors and manual call points, but does not affect the number of
sounders or other alarm devices on the system.