Intercall 600/700 Installation & Operation Guide Issue 4.27 Page 30 of 78
L7717 Large Power Supply Unit.
The L7717 is similar to the L717 Power Supply, however it has the capacity to operate an entire system and does not
require the use of L737 Booster Power Supplies. The printed circuit board controller is identical to the L717 as can be
seen below, however, the unit is powered from a separate 65Watt supply unit which is mounted alongside the PCB
within a self contained, surface mounting, mild steel enclosure. There is space in the enclosure for a 12Volt 12AH
battery. The power supply stores the text programming information & when this is customised, it will need to be
downloaded to any new display, call logger or pager interface installed on the system at a later date. When using with
an Intercall 700 with Intercom, the (A) and (B) cables do not connect to this unit. *The L7717 may be used with
Intercall 600 devices manufactured after August 2003 only.
Mains Supply Input: Remove protective cover to gain access to these terminals.
Battery Leads: 12v, 1.9/2.1/2.4 Ah sealed lead acid battery. OBSERVE POLARITY!
Output Terminals (+-): Three pairs provided for convenience, connect to network devices.
LIM Connector: Connects to LIM for system text programming. (See page52)
Configuration Switches: See page 73 for a complete list of DIL switch settings.
Day/Night Terminals: By connecting a switch between these two terminals you can switch the
between the two volume levels set-up on the displays. (See Pages 35)
Download Button: Press & hold for 10 seconds, then release, to download text to LCD displays.
THE BATTERY MUST BE CONNECTED WHEN DOWNLOADING
Reset Pins: Short together momentarily to reset system & all active calls.
Mains Failure Alarm: Beeps every 3 seconds when no mains supply is present.
Red Led: Flashes, indicating unit is operating correctly.
Yellow Led: Indicates AC is present and transformer is operating.
Green Led: Indicates 12volt DC supply is present and fuse is intact
Onboard Fuse: 1Amp 20mm protection for power supply & battery.
Installation: Self Contained Surface Mounted Case. (See Below)
Size & Weights: 370mm x 260mm x 110 mm 4.5Kg
+
-
+
-
+
-
Mains Supply
failure alarm
Battery Leads – Red (+) Black (-)
Battery Fuse
1 Am
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