24
Programming—IFC-1010/2020 Programming
The following apply to default latching:
•
Maximum of six devices can be latched at once (five modules
maximum).
•
Detectors have priority over modules. After six devices have been
latched, detectors that come into alarm assume LED latch priority over
previously latched module LEDs.
•
Due to a finite amount of 24 Volts Direct Current (VDC) power
available for devices on each SLC loop, illumination of only a certain
quantity of LEDs is actually visible under conditions where large
numbers of LEDs have been latched on.
•
Under secondary (DC) power, only intelligent detectors (including
DH500 and DH300 Series duct detectors) are latched.
The following apply to optional latching for more devices:
•
The control panel latches up to 99 devices, subject to the limitations
outlined below.
•
All devices in the system must be of the R4 variety.
•
No RA400 Remote LEDs can be installed on any device, except for the
DH500 and DH300 Series duct detectors.
•
Due to a finite amount of 24 VDC power available for devices on each
SLC loop, illumination of only a certain quantity of LEDs is actually
visible under conditions where large numbers of LEDs have been
latched on.
•
Under primary (AC, Alternating Current) power, 99 device LEDs can
be latched.
•
Detectors have priority over modules. After 99 devices have been
latched, detectors that come into alarm assume LED latch priority over
previously latched module LEDs.
•
Under secondary (DC, Direct Current) power, only intelligent detector
LEDs (including DH500 and DH300 Series duct detectors) are latched.
More
LED latching can be employed only if
all
installed addressable
devices were purchased from the factory after April 1, 1991. Use of this
feature under any other circumstances can cause the SLC loops to shut
down. Devices compatible with more LED latching have the code R4
stamped on the product marking label. The 2x51J photoelectric detectors
also can have an H code after the model number.
Default Latching
(LED Latching
Off)
Optional
Latching for
More Devices
(LED Latching
On)
