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19 become 62 through 69 and must be designated
and dialed as such.
system code assignments.
3.06
The 572A1 KSU requires 24-volt B battery,
B ground, 10-volt lamp battery and lamp
ground from an external power source. The power
source can be the power unit for the associated
key system, or if of insufficient capacity, a separately
provided source.
maximum of 0.35 ampere at 24 volts de and 0.17
ampere at 10 volts ac for the first six stations plus
0.04 amperes for each additional station.
Power is connected to the 572A1 KSU using
3.07
the terminal block on the rear of the unit.
The gauge of wire used is dependent on the distance
between the power unit and the KSU as follows:
0-6 feet use 18 gauge
6-10 feet use 16 gauge
10-15 feet use 14 gauge
15-25 feet use 12 gauge
Do not connect power to the system
until all installation work is completed.
Do not install or remove any common
cards with power. on the system.
The power unit frame is grounded through
3.08
the green wire of the ac power cord and
plug.
The 206A power unit plug must be mated
to a 3-prong ac outlet which is properly connected
to the power supply service ground.
properly grounded 3-wire outlet is not available,
connect a No. 14 gauge ground wire to the FRAME
GRD terminal on the rear of the 206A power unit
and route it to the closest acceptable ground point.
For additional information on key system grounding,
refer to Section 518-010-105.
KEY TELEPHONE UNITS
The KTUs should be installed in the designated
3.09
jacks as shown in Fig. 1. Options are made
using factory-supplied option plugs on the KTUs
except for paging access and override stations
which require positioning a toggle switch on the
rear of the KSU.
method of application are shown in Table D.
BSP 518-411-100-i01_1978-0 8-ll.jpg
See Table A for the
The 6B KTS will require a
The system options and the
Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 15, 2012 20:58:11
TELEPHONE SETS
Any key telephone set that can be wired
3 . 1 0
for A lead control (except special purpose
CALL DIRECTORS<> sets) can be used with the
6B KTS.
on the telephone set, even though a maximum of
four links may be available. Ten leads are required
between each telephone set and the KSU.
A1 lead is not required if it already appears in
the set.
L) are associated with the button assigned to the
6B KTS.
becomes the H lead and the other the B lead. A
diode is installed in the B lead in the same manner
as for station busy lamp.
lead normally used as the BL or any other spare
lead. The last two leads required are the BZ and
BZ1 which are connected to a 10-volt ac buzzer.
If the telephone set is not equipped with a separate
10-volt ac buzzer, one must be separately ordered
and installed.
the 6B KTS audible signal.
The telephone sets used with the 6B KTS
3. 1 1
must be modified to connect the normally
open contact on the HOLD key to the H lead and
a diode added and connected in the same manner
as for the busy lamp feature. In CALL DIRECTOR
sets, the set of HOLD key contacts normally used
for 1A KTS are substituted for those factory wired.
The factory wired contacts are then insulated and
stored. Fig. 3 shows the general purpose key sets
and CALL DIRECTOR sets as modified. Refer to
Section 502-110-102 for conversion of wall telephone
sets.
When a
If nonkey telephone sets are required (intercom
3. 1 2
only), a 502BM or 2502BM telephone set may
be used.
buzzer (6B KTS audible signal) must be separately
ordered and installed. The ringer in the set is not
used and must be disconnected.
associated with the HOLD key will not be available
to nonkey set users. Refer to Fig. 4 for connections
of a 502BM or 2502BM telephone set modified for
use with 6B KTS.
The station lead cutdown for the 184C1
3. 1 3
backboard is shown in Fig. 32, 33, and 34.
Fig. 35 shows the variation of wiring for paging
access.
ISS 1 , SECTION S 1 8-41 1- 100
Only one button appearance is required
Five of these leads (T, R, A, LG, and
Two spare leads are required-one
The B lead can be the
The set ringer cannot be used as
The mounting cord, and a 1 0-volt ac
The
The features
Page 1 1
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